Measuring the retrievability of digital library content using analytics data - Hamed Jahani; Leif Azzopardi; Mark Sanderson (J. Assoc. Inf. Sci. Technol., 2024)

Report on the Search Futures Workshop at ECIR 2024 - Leif Azzopardi; Charles L. A. Clarke; Paul B. Kantor; Bhaskar Mitra; Johanne R. Trippas; Zhaochun Ren; Mohammad Aliannejadi; Negar Arabzadeh; Raman Chandrasekar; Maarten de Rijke; Panagiotis Eustratiadis; William R. Hersh; et al. (SIGIR Forum, 2024)

Report on the Collab-a-Thon at ECIR 2024 - Sean MacAvaney; Adam Roegiest; Aldo Lipani; Andrew Parry; Björn Engelmann; Christin Katharina Kreutz; Chuan Meng; Erlend Frayling; Eugene Yang; Ferdinand Schlatt; Guglielmo Faggioli; Harrisen Scells; et al. (SIGIR Forum, 2024)

A Systematic Review of Cost, Effort, and Load Research in Information Search and Retrieval, 1972-2020 - Molly McGregor; Leif Azzopardi; Martin Halvey (ACM Trans. Inf. Syst., 2024)

Uncharted Territory: Understanding Exploratory Search Behaviours in Literature Reviews - Ayah Soufan; Ian Ruthven; Leif Azzopardi (Proceedings of the 2024 ACM SIGIR Conference on Human Information Interaction and Retrieval, CHIIR 2024, Sheffield, United Kingdom, March 10-14, 2024, 2024)

The Influence of Presentation and Performance on User Satisfaction - Kanaad Pathak; Leif Azzopardi; Martin Halvey (Proceedings of the 2024 ACM SIGIR Conference on Human Information Interaction and Retrieval, CHIIR 2024, Sheffield, United Kingdom, March 10-14, 2024, 2024)

Seeking Socially Responsible Consumers: Exploring the Intention-Search-Behaviour Gap - Leif Azzopardi; Frans van der Sluis (Proceedings of the 2024 ACM SIGIR Conference on Human Information Interaction and Retrieval, CHIIR 2024, Sheffield, United Kingdom, March 10-14, 2024, 2024)

Search under Uncertainty: Cognitive Biases and Heuristics - Tutorial on Modeling Search Interaction using Behavioral Economics - Leif Azzopardi; Jiqun Liu (Proceedings of the 2024 ACM SIGIR Conference on Human Information Interaction and Retrieval, CHIIR 2024, Sheffield, United Kingdom, March 10-14, 2024, 2024)

Measuring Bias in a Ranked List Using Term-Based Representations - Amin Abolghasemi; Leif Azzopardi; Arian Askari; Maarten de Rijke; Suzan Verberne (Advances in Information Retrieval - 46th European Conference on Information Retrieval, ECIR 2024, Glasgow, UK, March 24-28, 2024, Proceedings, Part V, 2024)

Ranking Heterogeneous Search Result Pages Using the Interactive Probability Ranking Principle - Kanaad Pathak; Leif Azzopardi; Martin Halvey (Advances in Information Retrieval - 46th European Conference on Information Retrieval, ECIR 2024, Glasgow, UK, March 24-28, 2024, Proceedings, Part II, 2024)

The Search Futures Workshop - Leif Azzopardi; Charles L. A. Clarke; Paul B. Kantor; Bhaskar Mitra; Johanne R. Trippas; Zhaochun Ren (Advances in Information Retrieval - 46th European Conference on Information Retrieval, ECIR 2024, Glasgow, UK, March 24-28, 2024, Proceedings, Part V, 2024)

Can We Use Large Language Models to Fill Relevance Judgment Holes? - Zahra Abbasiantaeb; Chuan Meng; Leif Azzopardi; Mohammad Aliannejadi (Joint Proceedings of the 1st Workshop on Evaluation Methodologies,Testbeds and Community for Information Access Research (EMTCIR 2024) and the 1st Workshop on User Modelling in Conversational Information Retrieval (UM-CIR 2024) co-located with the 2nd International ACM SIGIR Conference on Information Retrieval in the Asia Pacific (SIGIR-AP 2024), Tokyo, Japan, December 12, 2024, 2024)

TREC iKAT 2023: A Test Collection for Evaluating Conversational and Interactive Knowledge Assistants - Mohammad Aliannejadi; Zahra Abbasiantaeb; Shubham Chatterjee; Jeffrey Dalton; Leif Azzopardi (Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2024, Washington DC, USA, July 14-18, 2024, 2024)

Search under Uncertainty: Cognitive Biases and Heuristics: A Tutorial on Testing, Mitigating and Accounting for Cognitive Biases in Search Experiments - Jiqun Liu; Leif Azzopardi (Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2024, Washington DC, USA, July 14-18, 2024, 2024)

SimIIR 3: A Framework for the Simulation of Interactive and Conversational Information Retrieval - Leif Azzopardi; Timo Breuer; Björn Engelmann; Christin Kreutz; Sean MacAvaney; David Maxwell; Andrew Parry; Adam Roegiest; Xi Wang; Saber Zerhoudi (Proceedings of the 2024 Annual International ACM SIGIR Conference on Research and Development in Information Retrieval in the Asia Pacific Region, SIGIR-AP 2024, Tokyo, Japan, December 9-12, 2024, 2024)

Evaluating Cognitive Biases in Conversational and Generative IIR: A Tutorial - Leif Azzopardi; Jiqun Liu (Proceedings of the 2024 Annual International ACM SIGIR Conference on Research and Development in Information Retrieval in the Asia Pacific Region, SIGIR-AP 2024, Tokyo, Japan, December 9-12, 2024, 2024)

TREC iKAT 2023: The Interactive Knowledge Assistance Track Overview - Mohammad Aliannejadi; Zahra Abbasiantaeb; Shubham Chatterjee; Jeffery Dalton; Leif Azzopardi (CoRR, 2024)

Ranking Heterogeneous Search Result Pages using the Interactive Probability Ranking Principle - Kanaad Pathak; Leif Azzopardi; Martin Halvey (CoRR, 2024)

The Influence of Presentation and Performance on User Satisfaction - Kanaad Pathak; Leif Azzopardi; Martin Halvey (CoRR, 2024)

Measuring Bias in a Ranked List using Term-based Representations - Amin Abolghasemi; Leif Azzopardi; Arian Askari; Maarten de Rijke; Suzan Verberne (CoRR, 2024)

Accessibility in Information Retrieval - Leif Azzopardi; Vishwa Vinay (CoRR, 2024)

A Conceptual Framework for Conversational Search and Recommendation: Conceptualizing Agent-Human Interactions During the Conversational Search Process - Leif Azzopardi; Mateusz Dubiel; Martin Halvey; Jeffery Dalton (CoRR, 2024)

TREC iKAT 2023: A Test Collection for Evaluating Conversational and Interactive Knowledge Assistants - Mohammad Aliannejadi; Zahra Abbasiantaeb; Shubham Chatterjee; Jeffery Dalton; Leif Azzopardi (CoRR, 2024)

Can We Use Large Language Models to Fill Relevance Judgment Holes? - Zahra Abbasiantaeb; Chuan Meng; Leif Azzopardi; Mohammad Aliannejadi (CoRR, 2024)

Evaluation of Attribution Bias in Retrieval-Augmented Large Language Models - Amin Abolghasemi; Leif Azzopardi; Seyyed Hadi Hashemi; Maarten de Rijke; Suzan Verberne (CoRR, 2024)

PRISM: A Methodology for Auditing Biases in Large Language Models - Leif Azzopardi; Yashar Moshfeghi (CoRR, 2024)

What the Dickens: Post-mortem privacy and intergenerational trust - Burkhard Schafer; Jo Briggs; Wendy Moncur; Emma Nicol; Leif Azzopardi (Comput. Law Secur. Rev., 2023)

Driven to Distraction: Examining the Influence of Distractors on Search Behaviours, Performance and Experience - Leif Azzopardi; David Maxwell; Martin Halvey; Claudia Hauff (Proceedings of the 2023 Conference on Human Information Interaction and Retrieval, CHIIR 2023, Austin, TX, USA, March 19-23, 2023, 2023)

Retrievability Bias Estimation Using Synthetically Generated Queries - Amin Abolghasemi; Suzan Verberne; Arian Askari; Leif Azzopardi (Proceedings of the 32nd ACM International Conference on Information and Knowledge Management, CIKM 2023, Birmingham, United Kingdom, October 21-25, 2023, 2023)

TREC iKAT 2023: The Interactive Knowledge Assistance Track Overview - Mohammad Aliannejadi; Zahra Abbasiantaeb; Shubham Chatterjee; Jeffery Dalton; Leif Azzopardi (The Thirty-Second Text REtrieval Conference Proceedings (TREC 2023), Gaithersburg, MD, USA, November 14-17, 2023, 2023)

Revealing Cumulative Risks in Online Personal Information: A Data Narrative Study - Emma Nicol; Jo Briggs; Wendy Moncur; Amal Htait; Daniel Paul Carey; Leif Azzopardi; Burkhard Schafer (Proc. ACM Hum. Comput. Interact., 2022)

Searching the Literature: An Analysis of an Exploratory Search Task - Ayah Soufan; Ian Ruthven; Leif Azzopardi (CHIIR '22: ACM SIGIR Conference on Human Information Interaction and Retrieval, Regensburg, Germany, March 14 - 18, 2022, 2022)

Improving BERT-based Query-by-Document Retrieval with Multi-task Optimization - Amin Abolghasemi; Suzan Verberne; Leif Azzopardi (Advances in Information Retrieval - 44th European Conference on IR Research, ECIR 2022, Stavanger, Norway, April 10-14, 2022, Proceedings, Part II, 2022)

Towards Building Economic Models of Conversational Search - Leif Azzopardi; Mohammad Aliannejadi; Evangelos Kanoulas (Advances in Information Retrieval - 44th European Conference on IR Research, ECIR 2022, Stavanger, Norway, April 10-14, 2022, Proceedings, Part II, 2022)

An Initial Analysis of E-Procurement Search Behaviour - Stuart Mackie; Leif Azzopardi; Yashar Moshfeghi (Information for a Better World: Shaping the Global Future - 17th International Conference, iConference 2022, Virtual Event, February 28 - March 4, 2022, Proceedings, Part II, 2022)

A Flexible Framework for Offline Effectiveness Metrics - Alistair Moffat; Joel Mackenzie; Paul Thomas; Leif Azzopardi (SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022, 2022)

Are Taylor's Posts Risky? Evaluating Cumulative Revelations in Online Personal Data: A persona-based tool for evaluating awareness of online risks and harms - Leif Azzopardi; Jo Briggs; Melissa Duheric; Callum Nash; Emma Nicol; Wendy Moncur; Burkhard Schafer (SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022, 2022)

TREC CAsT 2022: Going Beyond User Ask and System Retrieve with Initiative and Response Generation - Paul Owoicho; Jeff Dalton; Mohammad Aliannejadi; Leif Azzopardi; Johanne R. Trippas; Svitlana Vakulenko (Proceedings of the Thirty-First Text REtrieval Conference, TREC 2022, online, November 15-19, 2022, 2022)

Towards Building Economic Models of Conversational Search - Leif Azzopardi; Mohammad Aliannejadi; Evangelos Kanoulas (CoRR, 2022)

Improving BERT-based Query-by-Document Retrieval with Multi-Task Optimization - Amin Abolghasemi; Suzan Verberne; Leif Azzopardi (CoRR, 2022)

Revealing Cumulative Risks in Online Personal Information: A Data Narrative Study - Emma Nicol; Jo Briggs; Wendy Moncur; Amal Htait; Daniel Paul Carey; Leif Azzopardi; Burkhard Schafer (CoRR, 2022)

Inferring Trust From Users' Behaviours; Agents' Predictability Positively Affects Trust, Task Performance and Cognitive Load in Human-Agent Real-Time Collaboration - Sylvain Daronnat; Leif Azzopardi; Martin Halvey; Mateusz Dubiel (Frontiers Robotics AI, 2021)

Towards Identifying, Understanding and Controlling Cumulative Revelations in Social Media - Emma Nicol; Amal Htait; Leif Azzopardi; Wendy Moncur (Information: Equity, Diversity, Inclusion, Justice, and Relevance - Proceedings of the 84th ASIS&T Annual Meeting, ASIST 2021, Salt Lake City, UT, USA, October 30 - November 2, 2021, 2021)

Cognitive Biases in Search: A Review and Reflection of Cognitive Biases in Information Retrieval - Leif Azzopardi (CHIIR '21: ACM SIGIR Conference on Human Information Interaction and Retrieval, Canberra, ACT, Australia, March 14-19, 2021, 2021)

Investigating the Influence of Ads on User Search Performance, Behaviour, and Experience during Information Seeking - Olivia Foulds; Leif Azzopardi; Martin Halvey (CHIIR '21: ACM SIGIR Conference on Human Information Interaction and Retrieval, Canberra, ACT, Australia, March 14-19, 2021, 2021)

Untangling Cost, Effort, and Load in Information Seeking and Retrieval - Molly McGregor; Leif Azzopardi; Martin Halvey (CHIIR '21: ACM SIGIR Conference on Human Information Interaction and Retrieval, Canberra, ACT, Australia, March 14-19, 2021, 2021)

User Models, Metrics and Measures of Search: A Tutorial on the C/W/L Evaluation Framework - Leif Azzopardi; Alistair Moffat; Paul Thomas; Guido Zuccon (CHIIR '21: ACM SIGIR Conference on Human Information Interaction and Retrieval, Canberra, ACT, Australia, March 14-19, 2021, 2021)

Analysing Mixed Initiatives and Search Strategies during Conversational Search - Mohammad Aliannejadi; Leif Azzopardi; Hamed Zamani; Evangelos Kanoulas; Paul Thomas; Nick Craswell (CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021, 2021)

BERT-Based Transformers for Early Detection of Mental Health Illnesses - Rodrigo Martínez-Castaño; Amal Htait; Leif Azzopardi; Yashar Moshfeghi (Experimental IR Meets Multilinguality, Multimodality, and Interaction - 12th International Conference of the CLEF Association, CLEF 2021, Virtual Event, September 21-24, 2021, Proceedings, 2021)

AWESSOME: An Unsupervised Sentiment Intensity Scoring Framework Using Neural Word Embeddings - Amal Htait; Leif Azzopardi (Advances in Information Retrieval - 43rd European Conference on IR Research, ECIR 2021, Virtual Event, March 28 - April 1, 2021, Proceedings, Part II, 2021)

Untangling the Concept of Task in Information Seeking and Retrieval - Ayah Soufan; Ian Ruthven; Leif Azzopardi (ICTIR '21: The 2021 ACM SIGIR International Conference on the Theory of Information Retrieval, Virtual Event, Canada, July 11, 2021, 2021)

Sentiment Intensity Prediction using Neural Word Embeddings - Amal Htait; Leif Azzopardi (ICTIR '21: The 2021 ACM SIGIR International Conference on the Theory of Information Retrieval, Virtual Event, Canada, July 11, 2021, 2021)

ERR is not C/W/L: Exploring the Relationship Between Expected Reciprocal Rank and Other Metrics - Leif Azzopardi; Joel Mackenzie; Alistair Moffat (ICTIR '21: The 2021 ACM SIGIR International Conference on the Theory of Information Retrieval, Virtual Event, Canada, July 11, 2021, 2021)

Analysing Mixed Initiatives and Search Strategies during Conversational Search - Mohammad Aliannejadi; Leif Azzopardi; Hamed Zamani; Evangelos Kanoulas; Paul Thomas; Nick Craswell (CoRR, 2021)

Data-Driven Evaluation Metrics for Heterogeneous Search Engine Result Pages - Leif Azzopardi; Ryen W. White; Paul Thomas; Nick Craswell (CHIIR '20: Conference on Human Information Interaction and Retrieval, Vancouver, BC, Canada, March 14-18, 2020, 2020)

Reflecting upon Perceptual Speed Tests in Information Retrieval: Limitations, Challenges, and Recommendations - Olivia Foulds; Leif Azzopardi; Martin Halvey (CHIIR '20: Conference on Human Information Interaction and Retrieval, Vancouver, BC, Canada, March 14-18, 2020, 2020)

Made to Measure: A Workshop on Human-centred metrics for information seeking - George Buchanan; Dana McKay; Charles L. A. Clarke; Leif Azzopardi; Johanne R. Trippas (CHIIR '20: Conference on Human Information Interaction and Retrieval, Vancouver, BC, Canada, March 14-18, 2020, 2020)

Early Risk Detection of Self-Harm and Depression Severity using BERT-based Transformers - Rodrigo Martínez-Castaño; Amal Htait; Leif Azzopardi; Yashar Moshfeghi (Working Notes of CLEF 2020 - Conference and Labs of the Evaluation Forum, Thessaloniki, Greece, September 22-25, 2020, 2020)

Impact of Agent Reliability and Predictability on Trust in Real Time Human-Agent Collaboration - Sylvain Daronnat; Leif Azzopardi; Martin Halvey; Mateusz Dubiel (HAI '20: 8th International Conference on Human-Agent Interaction, Virtual Event, Australia, November 10-13, 2020, 2020)

Using Sentiment Analysis for Pseudo-Relevance Feedback in Social Book Search - Amal Htait; Sébastien Fournier; Patrice Bellot; Leif Azzopardi; Gabriella Pasi (ICTIR '20: The 2020 ACM SIGIR International Conference on the Theory of Information Retrieval, Virtual Event, Norway, September 14-17, 2020, 2020)

Interactive Evaluation of Conversational Agents: Reflections on the Impact of Search Task Design - Mateusz Dubiel; Martin Halvey; Leif Azzopardi; Sylvain Daronnat (ICTIR '20: The 2020 ACM SIGIR International Conference on the Theory of Information Retrieval, Virtual Event, Norway, September 14-17, 2020, 2020)

Analyzing the Influence of Bigrams on Retrieval Bias and Effectiveness - Abdulaziz AlQatan; Leif Azzopardi; Yashar Moshfeghi (ICTIR '20: The 2020 ACM SIGIR International Conference on the Theory of Information Retrieval, Virtual Event, Norway, September 14-17, 2020, 2020)

Predicting Perceptual Speed from Search Behaviour - Olivia Foulds; Alessandro Suglia; Leif Azzopardi; Martin Halvey (Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020, 2020)

DataMirror: Reflecting on One's Data Self: A Tool for Social Media Users to Explore Their Digital Footprints - Amal Htait; Leif Azzopardi; Emma Nicol; Wendy Moncur (Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020, 2020)

The impact of result diversification on search behaviour and performance - David Maxwell; Leif Azzopardi; Yashar Moshfeghi (Inf. Retr. J., 2019)

Building Economic Models of Human Computer Interaction - Leif Azzopardi; Guido Zuccon (Extended Abstracts of the 2019 CHI Conference on Human Factors in Computing Systems, CHI 2019, Glasgow, Scotland, UK, May 04-09, 2019, 2019)

CLEF 2019 Technology Assisted Reviews in Empirical Medicine Overview - Evangelos Kanoulas; Dan Li; Leif Azzopardi; René Spijker (Working Notes of CLEF 2019 - Conference and Labs of the Evaluation Forum, Lugano, Switzerland, September 9-12, 2019, 2019)

Overview of the CLEF eHealth Evaluation Lab 2019 - Liadh Kelly; Hanna Suominen; Lorraine Goeuriot; Mariana L. Neves; Evangelos Kanoulas; Dan Li; Leif Azzopardi; René Spijker; Guido Zuccon; Harrisen Scells; João R. M. Palotti (Experimental IR Meets Multilinguality, Multimodality, and Interaction - 10th International Conference of the CLEF Association, CLEF 2019, Lugano, Switzerland, September 9-12, 2019, Proceedings, 2019)

CLEF eHealth 2019 Evaluation Lab - Liadh Kelly; Lorraine Goeuriot; Hanna Suominen; Mariana L. Neves; Evangelos Kanoulas; René Spijker; Leif Azzopardi; Dan Li; Jimmy; João R. M. Palotti; Guido Zuccon (Advances in Information Retrieval - 41st European Conference on IR Research, ECIR 2019, Cologne, Germany, April 14-18, 2019, Proceedings, Part II, 2019)

cwl_eval: An Evaluation Tool for Information Retrieval - Leif Azzopardi; Paul Thomas; Alistair Moffat (Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2019, Paris, France, July 21-25, 2019, 2019)

Looking for Opportunities: Challenges in Procurement Search - Stuart Mackie; David Macdonald; Leif Azzopardi; Yashar Moshfeghi (Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2019, Paris, France, July 21-25, 2019, 2019)

Building Economic Models and Measures of Search - Leif Azzopardi; Alistair Moffat; Paul Thomas; Guido Zuccon (Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2019, Paris, France, July 21-25, 2019, 2019)

VES Team at TREC Conversational Assistance Track (CAsT) 2019 - Vasileios Stamatis; Leif Azzopardi; Alan Wilson (Proceedings of the Twenty-Eighth Text REtrieval Conference, TREC 2019, Gaithersburg, Maryland, USA, November 13-15, 2019, 2019)

Proceedings of the 2019 Conference on Human Information Interaction and Retrieval, CHIIR 2019, Glasgow, Scotland, UK, March 10-14, 2019 - Leif Azzopardi; Martin Halvey; Ian Ruthven; Hideo Joho; Vanessa Murdock; Pernilla Qvarfordt (ACM, 2019)

Advances in Information Retrieval - 41st European Conference on IR Research, ECIR 2019, Cologne, Germany, April 14-18, 2019, Proceedings, Part I - Leif Azzopardi; Benno Stein; Norbert Fuhr; Philipp Mayr; Claudia Hauff; Djoerd Hiemstra (Springer, 2019)

Advances in Information Retrieval - 41st European Conference on IR Research, ECIR 2019, Cologne, Germany, April 14-18, 2019, Proceedings, Part II - Leif Azzopardi; Benno Stein; Norbert Fuhr; Philipp Mayr; Claudia Hauff; Djoerd Hiemstra (Springer, 2019)

Information retrieval in the workplace: A comparison of professional search practices - Tony Russell-Rose; Jon Chamberlain; Leif Azzopardi (Inf. Process. Manag., 2018)

The impact of fielding on retrieval performance and bias - Colin Wilkie; Leif Azzopardi (Building & Sustaining an Ethical Future with Emerging Technology - Proceedings of the 81st ASIS&T Annual Meeting, ASIST 2018, Vancouver, BC, Canada, November 10-14, 2018, 2018)

CLEF 2018 Technologically Assisted Reviews in Empirical Medicine Overview - Evangelos Kanoulas; Dan Li; Leif Azzopardi; René Spijker (Working Notes of CLEF 2018 - Conference and Labs of the Evaluation Forum, Avignon, France, September 10-14, 2018, 2018)

Overview of the CLEF eHealth Evaluation Lab 2018 - Hanna Suominen; Liadh Kelly; Lorraine Goeuriot; Aurélie Névéol; Lionel Ramadier; Aude Robert; Evangelos Kanoulas; René Spijker; Leif Azzopardi; Dan Li; Jimmy; João R. M. Palotti; et al. (Experimental IR Meets Multilinguality, Multimodality, and Interaction - 9th International Conference of the CLEF Association, CLEF 2018, Avignon, France, September 10-14, 2018, Proceedings, 2018)

Overview of the CLEF Dynamic Search Evaluation Lab 2018 - Evangelos Kanoulas; Leif Azzopardi; Grace Hui Yang (Experimental IR Meets Multilinguality, Multimodality, and Interaction - 9th International Conference of the CLEF Association, CLEF 2018, Avignon, France, September 10-14, 2018, Proceedings, 2018)

Information Scent, Searching and Stopping - Modelling SERP Level Stopping Behaviour - David Maxwell; Leif Azzopardi (Advances in Information Retrieval - 40th European Conference on IR Research, ECIR 2018, Grenoble, France, March 26-29, 2018, Proceedings, 2018)

Measuring the Utility of Search Engine Result Pages: An Information Foraging Based Measure - Leif Azzopardi; Paul Thomas; Nick Craswell (The 41st International ACM SIGIR Conference on Research & Development in Information Retrieval, SIGIR 2018, Ann Arbor, MI, USA, July 08-12, 2018, 2018)

Query Variation Performance Prediction for Systematic Reviews - Harrisen Scells; Leif Azzopardi; Guido Zuccon; Bevan Koopman (The 41st International ACM SIGIR Conference on Research & Development in Information Retrieval, SIGIR 2018, Ann Arbor, MI, USA, July 08-12, 2018, 2018)

Advances in Information Retrieval - 40th European Conference on IR Research, ECIR 2018, Grenoble, France, March 26-29, 2018, Proceedings - Gabriella Pasi; Benjamin Piwowarski; Leif Azzopardi; Allan Hanbury (Springer, 2018)

A Survey Investigating Usage of Virtual Personal Assistants - Mateusz Dubiel; Martin Halvey; Leif Azzopardi (CoRR, 2018)

Cross-domain citation recommendation based on hybrid topic model and co-citation selection - Supaporn Tantanasiriwong; Sumanta Guha; Paul Janecek; Choochart Haruechaiyasak; Leif Azzopardi (Int. J. Data Min. Model. Manag., 2017)

Validating simulated interaction for retrieval evaluation - Teemu Pääkkönen; Jaana Kekäläinen; Heikki Keskustalo; Leif Azzopardi; David Maxwell; Kalervo Järvelin (Inf. Retr. J., 2017)

Report on the Information Retrieval Festival (IRFest2017) - Leif Azzopardi; Craig Macdonald; Iadh Ounis; Martin Halvey (SIGIR Forum, 2017)

Report on the Second International Workshop on the Evaluation on Collaborative Information Seeking and Retrieval (ECol?2017 @ CHIIR) - Leif Azzopardi; Jeremy Pickens; Chirag Shah; Laure Soulier; Lynda Tamine (SIGIR Forum, 2017)

Building Cost-Benefit Models of Information Interactions - Leif Azzopardi (Proceedings of the 2017 Conference on Conference Human Information Interaction and Retrieval, CHIIR 2017, Oslo, Norway, March 7-11, 2017, 2017)

Second International Workshop On the Evaluation of Collaborative Information Seeking and Retrieval (Ecol'17) - Leif Azzopardi; Jeremy Pickens; Chirag Shah; Laure Soulier; Lynda Tamine (Proceedings of the 2017 Conference on Conference Human Information Interaction and Retrieval, CHIIR 2017, Oslo, Norway, March 7-11, 2017, 2017)

An Empirical Analysis of Pruning Techniques: Performance, Retrievability and Bias - Ruey-Cheng Chen; Leif Azzopardi; Falk Scholer (Proceedings of the 2017 ACM on Conference on Information and Knowledge Management, CIKM 2017, Singapore, November 06 - 10, 2017, 2017)

Integrating the Framing of Clinical Questions via PICO into the Retrieval of Medical Literature for Systematic Reviews - Harrisen Scells; Guido Zuccon; Bevan Koopman; Anthony Deacon; Leif Azzopardi; Shlomo Geva (Proceedings of the 2017 ACM on Conference on Information and Knowledge Management, CIKM 2017, Singapore, November 06 - 10, 2017, 2017)

Algorithmic Bias: Do Good Systems Make Relevant Documents More Retrievable? - Colin Wilkie; Leif Azzopardi (Proceedings of the 2017 ACM on Conference on Information and Knowledge Management, CIKM 2017, Singapore, November 06 - 10, 2017, 2017)

SiS at CLEF 2017 eHealth TAR Task - Leif Azzopardi; Vassil Kalphov; Georgios Georgiadis (Working Notes of CLEF 2017 - Conference and Labs of the Evaluation Forum, Dublin, Ireland, September 11-14, 2017, 2017)

CLEF 2017 Dynamic Search Lab Overview And Evaluation - Evangelos Kanoulas; Leif Azzopardi (Working Notes of CLEF 2017 - Conference and Labs of the Evaluation Forum, Dublin, Ireland, September 11-14, 2017, 2017)

CLEF 2017 Dynamic Search Evaluation Lab Overview - Evangelos Kanoulas; Leif Azzopardi (Experimental IR Meets Multilinguality, Multimodality, and Interaction - 8th International Conference of the CLEF Association, CLEF 2017, Dublin, Ireland, September 11-14, 2017, Proceedings, 2017)

CLEF 2017 Technologically Assisted Reviews in Empirical Medicine Overview - Evangelos Kanoulas; Dan Li; Leif Azzopardi; René Spijker (Working Notes of CLEF 2017 - Conference and Labs of the Evaluation Forum, Dublin, Ireland, September 11-14, 2017, 2017)

A Task Completion Engine to Enhance Search Session Support for Air Traffic Work Tasks - Yashar Moshfeghi; Raoul Rothfeld; Leif Azzopardi; Peter Triantafillou (Advances in Information Retrieval - 39th European Conference on IR Research, ECIR 2017, Aberdeen, UK, April 8-13, 2017, Proceedings, 2017)

Personalised Search Time Prediction using Markov Chains - Vu Tran; David Maxwell; Norbert Fuhr; Leif Azzopardi (Proceedings of the ACM SIGIR International Conference on Theory of Information Retrieval, ICTIR 2017, Amsterdam, The Netherlands, October 1-4, 2017, 2017)

An Initial Investigation of Query Expansion Bias - Colin Wilkie; Leif Azzopardi (Proceedings of the ACM SIGIR International Conference on Theory of Information Retrieval, ICTIR 2017, Amsterdam, The Netherlands, October 1-4, 2017, 2017)

A Study of Snippet Length and Informativeness: Behaviour, Performance and User Experience - David Maxwell; Leif Azzopardi; Yashar Moshfeghi (Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 2017, 2017)

Exploring the Query Halo Effect in Site Search: Leading People to Longer Queries - Djoerd Hiemstra; Claudia Hauff; Leif Azzopardi (Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 2017, 2017)

A Test Collection for Evaluating Retrieval of Studies for Inclusion in Systematic Reviews - Harrisen Scells; Guido Zuccon; Bevan Koopman; Anthony Deacon; Leif Azzopardi; Shlomo Geva (Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 2017, 2017)

The Lucene for Information Access and Retrieval Research (LIARR) Workshop at SIGIR 2017 - Leif Azzopardi; Matt Crane; Hui Fang; Grant Ingersoll; Jimmy Lin; Yashar Moshfeghi; Harrisen Scells; Peilin Yang; Guido Zuccon (Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 2017, 2017)

Report on the First International Workshop on the Evaluation on Collaborative Information Seeking and Retrieval (ECol'2015) - Laure Soulier; Lynda Tamine; Tetsuya Sakai; Leif Azzopardi; Jeremy Pickens (SIGIR Forum, 2016)

Lucene4IR: Developing Information Retrieval Evaluation Resources using Lucene - Leif Azzopardi; Yashar Moshfeghi; Martin Halvey; Rami Suleiman Alkhawaldeh; Krisztian Balog; Emanuele Di Buccio; Diego Ceccarelli; Juan M. Fernández-Luna; Charlie Hull; Jake Mannix; Sauparna Palchowdhury (SIGIR Forum, 2016)

Pienapple search: an integrated search interface to support finding, refinding and sharing - Martynas Buivys; Leif Azzopardi (Creating Knowledge, Enhancing Lives through Information & Technology - Proceedings of the 2016 Annual Meeting of the Association for Information Science and Technology, ASIST 2016, Copenhagen, Denmark, October 14-18, 2016, 2016)

Impacts of Time Constraints and System Delays on User Experience - Anita Crescenzi; Diane Kelly; Leif Azzopardi (Proceedings of the 2016 ACM Conference on Human Information Interaction and Retrieval, CHIIR 2016, Carrboro, North Carolina, USA, March 13-17, 2016, 2016)

Agents, Simulated Users and Humans: An Analysis of Performance and Behaviour - David Maxwell; Leif Azzopardi (Proceedings of the 25th ACM International Conference on Information and Knowledge Management, CIKM 2016, Indianapolis, IN, USA, October 24-28, 2016, 2016)

Two Scrolls or One Click: A Cost Model for Browsing Search Results - Leif Azzopardi; Guido Zuccon (Advances in Information Retrieval - 38th European Conference on IR Research, ECIR 2016, Padua, Italy, March 20-23, 2016. Proceedings, 2016)

Advances in Formal Models of Search and Search Behaviour - Leif Azzopardi; Guido Zuccon (Proceedings of the 2016 ACM on International Conference on the Theory of Information Retrieval, ICTIR 2016, Newark, DE, USA, September 12- 6, 2016, 2016)

An Analysis of the Cost and Benefit of Search Interactions - Leif Azzopardi; Guido Zuccon (Proceedings of the 2016 ACM on International Conference on the Theory of Information Retrieval, ICTIR 2016, Newark, DE, USA, September 12- 6, 2016, 2016)

A Topical Approach to Retrievability Bias Estimation - Colin Wilkie; Leif Azzopardi (Proceedings of the 2016 ACM on International Conference on the Theory of Information Retrieval, ICTIR 2016, Newark, DE, USA, September 12- 6, 2016, 2016)

InfoScout: An Interactive, Entity Centric, Person Search Tool - Sean McKeown; Martynas Buivys; Leif Azzopardi (Proceedings of the 39th International ACM SIGIR conference on Research and Development in Information Retrieval, SIGIR 2016, Pisa, Italy, July 17-21, 2016, 2016)

Simulating Interactive Information Retrieval: SimIIR: A Framework for the Simulation of Interaction - David Maxwell; Leif Azzopardi (Proceedings of the 39th International ACM SIGIR conference on Research and Development in Information Retrieval, SIGIR 2016, Pisa, Italy, July 17-21, 2016, 2016)

Simulation of Interaction: A Tutorial on Modelling and Simulating User Interaction and Search Behaviour - Leif Azzopardi (Proceedings of the 39th International ACM SIGIR conference on Research and Development in Information Retrieval, SIGIR 2016, Pisa, Italy, July 17-21, 2016, 2016)

Integrating and Evaluating Neural Word Embeddings in Information Retrieval - Guido Zuccon; Bevan Koopman; Peter Bruza; Leif Azzopardi (Proceedings of the 20th Australasian Document Computing Symposium, ADCS 2015, Parramatta, NSW, Australia, December 8-9, 2015, 2015)

Searching and Stopping: An Analysis of Stopping Rules and Strategies - David Maxwell; Leif Azzopardi; Kalervo Järvelin; Heikki Keskustalo (Proceedings of the 24th ACM International Conference on Information and Knowledge Management, CIKM 2015, Melbourne, VIC, Australia, October 19 - 23, 2015, 2015)

Query Length, Retrievability Bias and Performance - Colin Wilkie; Leif Azzopardi (Proceedings of the 24th ACM International Conference on Information and Knowledge Management, CIKM 2015, Melbourne, VIC, Australia, October 19 - 23, 2015, 2015)

ECol 2015: First international workshop on the Evaluation on Collaborative Information Seeking and Retrieval - Leif Azzopardi; Jeremy Pickens; Tetsuya Sakai; Laure Soulier; Lynda Tamine (Proceedings of the 24th ACM International Conference on Information and Knowledge Management, CIKM 2015, Melbourne, VIC, Australia, October 19 - 23, 2015, 2015)

Exploring Behavioral Dimensions in Session Effectiveness - Teemu Pääkkönen; Kalervo Järvelin; Jaana Kekäläinen; Heikki Keskustalo; Feza Baskaya; David Maxwell; Leif Azzopardi (Experimental IR Meets Multilinguality, Multimodality, and Interaction - 6th International Conference of the CLEF Association, CLEF 2015, Toulouse, France, September 8-11, 2015, Proceedings, 2015)

Usor Economicus - Leif Azzopardi (CORIA 2015 - Conférence en Recherche d'Infomations et Applications - 12th French Information Retrieval Conference, Paris, France, March 18-20, 2015, 2015)

A Game of Search - Leif Azzopardi (Proceedings of the Second International Workshop on Gamification for Information Retrieval co-located with the 37th European Conference on Information Retrieval (ECIR 2015), Vienna, Austria, March 29, 2015, 2015)

Retrievability and Retrieval Bias: A Comparison of Inequality Measures - Colin Wilkie; Leif Azzopardi (Advances in Information Retrieval - 37th European Conference on IR Research, ECIR 2015, Vienna, Austria, March 29 - April 2, 2015. Proceedings, 2015)

The Impact of Query Interface Design on Stress, Workload and Performance - Ashlee Edwards; Diane Kelly; Leif Azzopardi (Advances in Information Retrieval - 37th European Conference on IR Research, ECIR 2015, Vienna, Austria, March 29 - April 2, 2015. Proceedings, 2015)

A Tutorial on Measuring Document Retrievability - Leif Azzopardi (Advances in Information Retrieval - 37th European Conference on IR Research, ECIR 2015, Vienna, Austria, March 29 - April 2, 2015. Proceedings, 2015)

Theory of Retrieval: The Retrievability of Information - Leif Azzopardi (Proceedings of the 2015 International Conference on The Theory of Information Retrieval, ICTIR 2015, Northampton, Massachusetts, USA, September 27-30, 2015, 2015)

An Analysis of Theories of Search and Search Behavior - Leif Azzopardi; Guido Zuccon (Proceedings of the 2015 International Conference on The Theory of Information Retrieval, ICTIR 2015, Northampton, Massachusetts, USA, September 27-30, 2015, 2015)

How many results per page?: A Study of SERP Size, Search Behavior and User Experience - Diane Kelly; Leif Azzopardi (Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information Retrieval, Santiago, Chile, August 9-13, 2015, 2015)

Untangling Result List Refinement and Ranking Quality: a Framework for Evaluation and Prediction - Jiyin He; Marc Bron; Arjen P. de Vries; Leif Azzopardi; Maarten de Rijke (Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information Retrieval, Santiago, Chile, August 9-13, 2015, 2015)

Time Pressure and System Delays in Information Search - Anita Crescenzi; Diane Kelly; Leif Azzopardi (Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information Retrieval, Santiago, Chile, August 9-13, 2015, 2015)

An Initial Investigation into Fixed and Adaptive Stopping Strategies - David Maxwell; Leif Azzopardi; Kalervo Järvelin; Heikki Keskustalo (Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information Retrieval, Santiago, Chile, August 9-13, 2015, 2015)

Building and Using Models of Information Seeking, Search and Retrieval: Full Day Tutorial - Leif Azzopardi; Guido Zuccon (Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information Retrieval, Santiago, Chile, August 9-13, 2015, 2015)

Proceedings of the 2015 Workshop on Evaluation on Collaborative Information Retrieval and Seeking, ECol 2015, Melbourne, Australia, October 23, 2015 - Leif Azzopardi; Jeremy Pickens; Tetsuya Sakai; Laure Soulier; Lynda Tamine (ACM, 2015)

Sixth BCS-IRSG Symposium on Future Directions in Information Access, FDIA 2015, 31 August - 4 September 2015, Thessaloniki, Greece - Leif Azzopardi; Max L. Wilson (BCS, 2015)

A Retrievability Analysis: Exploring the Relationship Between Retrieval Bias and Retrieval Performance - Colin Wilkie; Leif Azzopardi (Proceedings of the 23rd ACM International Conference on Conference on Information and Knowledge Management, CIKM 2014, Shanghai, China, November 3-7, 2014, 2014)

Best and Fairest: An Empirical Analysis of Retrieval System Bias - Colin Wilkie; Leif Azzopardi (Advances in Information Retrieval - 36th European Conference on IR Research, ECIR 2014, Amsterdam, The Netherlands, April 13-16, 2014. Proceedings, 2014)

PageFetch 2: gamification the sequel - Leif Azzopardi; Martin Bevc; Andrew Gardner; David Maxwell; Abdullah Razzouk (Proceedings of the First International Workshop on Gamification for Information Retrieval, GamifIR@ECIR '14, Amsterdam, The Netherlands, April 13, 2014, 2014)

Studying user browsing behavior through gamified search tasks - Jiyin He; Marc Bron; Leif Azzopardi; Arjen P. de Vries (Proceedings of the First International Workshop on Gamification for Information Retrieval, GamifIR@ECIR '14, Amsterdam, The Netherlands, April 13, 2014, 2014)

Efficiently Estimating Retrievability Bias - Colin Wilkie; Leif Azzopardi (Advances in Information Retrieval - 36th European Conference on IR Research, ECIR 2014, Amsterdam, The Netherlands, April 13-16, 2014. Proceedings, 2014)

Page Retrievability Calculator - Leif Azzopardi; Rosanne English; Colin Wilkie; David Maxwell (Advances in Information Retrieval - 36th European Conference on IR Research, ECIR 2014, Amsterdam, The Netherlands, April 13-16, 2014. Proceedings, 2014)

Stuck in traffic: how temporal delays affect search behaviour - David Maxwell; Leif Azzopardi (Fifth Information Interaction in Context Symposium, IIiX '14, Regensburg, Germany, August 26-29, 2014, 2014)

Investigating people: a qualitative analysis of the search behaviours of open-source intelligence analysts - Sean McKeown; David Maxwell; Leif Azzopardi; William Bradley Glisson (Fifth Information Interaction in Context Symposium, IIiX '14, Regensburg, Germany, August 26-29, 2014, 2014)

Modelling interaction with economic models of search - Leif Azzopardi (The 37th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR '14, Gold Coast , QLD, Australia - July 06 - 11, 2014, 2014)

The retrievability of documents - Leif Azzopardi (The 37th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR '14, Gold Coast , QLD, Australia - July 06 - 11, 2014, 2014)

Fifth Information Interaction in Context Symposium, IIiX '14, Regensburg, Germany, August 26-29, 2014 - David Elsweiler; Bernd Ludwig; Leif Azzopardi; Max L. Wilson (ACM, 2014)

Crowdsourcing interactions: using crowdsourcing for evaluating interactive information retrieval systems - Guido Zuccon; Teerapong Leelanupab; Stewart Whiting; Emine Yilmaz; Joemon M. Jose; Leif Azzopardi (Inf. Retr., 2013)

Report on the Scottish informatics and computing science alliance's information retrieval workshop (IRFest) - Martin Halvey; Leif Azzopardi (SIGIR Forum, 2013)

Economic models of search - Leif Azzopardi (The Australasian Document Computing Symposium, ADCS '13, Brisbane, QLD, Australia, December 5-6, 2013, 2013)

High throughput filtering using FPGA-acceleration - Wim Vanderbauwhede; Anton Frolov; Leif Azzopardi; Sai Rahul Chalamalasetti; Martin Margala (22nd ACM International Conference on Information and Knowledge Management, CIKM'13, San Francisco, CA, USA, October 27 - November 1, 2013, 2013)

Reducing the Uncertainty in Resource Selection - Ilya Markov; Leif Azzopardi; Fabio Crestani (Advances in Information Retrieval - 35th European Conference on IR Research, ECIR 2013, Moscow, Russia, March 24-27, 2013. Proceedings, 2013)

An Initial Investigation on the Relationship between Usage and Findability - Colin Wilkie; Leif Azzopardi (Advances in Information Retrieval - 35th European Conference on IR Research, ECIR 2013, Moscow, Russia, March 24-27, 2013. Proceedings, 2013)

Re-leashed! The PuppyIR Framework for Developing Information Services for Children, Adults and Dogs - Douglas Dowie; Leif Azzopardi (Advances in Information Retrieval - 35th European Conference on IR Research, ECIR 2013, Moscow, Russia, March 24-27, 2013. Proceedings, 2013)

How query cost affects search behavior - Leif Azzopardi; Diane Kelly; Kathy Brennan (The 36th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '13, Dublin, Ireland - July 28 - August 01, 2013, 2013)

Relating retrievability, performance and length - Colin Wilkie; Leif Azzopardi (The 36th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '13, Dublin, Ireland - July 28 - August 01, 2013, 2013)

#trapped!: social media search system requirements for emergency management professionals - Stefan Raue; Leif Azzopardi; Christopher W. Johnson (The 36th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '13, Dublin, Ireland - July 28 - August 01, 2013, 2013)

Service-please: an interactive healthy eating serious game application for tablet computer - Kenneth C. Scott-Brown; Marjon van der Pol; Claire Moncrieffe; Julia Allan; Paul Crook; Donna McAvoy; Leif Azzopardi; Mark Bamford; Ian Reynolds (BCS-HCI '12 Proceedings of the 26th Annual BCS Interaction Specialist Group Conference on People and Computers, BCS-HCI 2012, 12-14 September 2012, Birmingham, UK, 2012)

Detection of News Feeds Items Appropriate for Children - Tamara Polajnar; Richard Glassey; Leif Azzopardi (Advances in Information Retrieval - 34th European Conference on IR Research, ECIR 2012, Barcelona, Spain, April 1-5, 2012. Proceedings, 2012)

Top-k Retrieval Using Facility Location Analysis - Guido Zuccon; Leif Azzopardi; Dell Zhang; Jun Wang (Advances in Information Retrieval - 34th European Conference on IR Research, ECIR 2012, Barcelona, Spain, April 1-5, 2012. Proceedings, 2012)

Crisees: Real-Time Monitoring of Social Media Streams to Support Crisis Management - David Maxwell; Stefan Raue; Leif Azzopardi; Christopher W. Johnson; Sarah Oates (Advances in Information Retrieval - 34th European Conference on IR Research, ECIR 2012, Barcelona, Spain, April 1-5, 2012. Proceedings, 2012)

EmSe: Supporting Children's Information Needs within a Hospital Environment - Leif Azzopardi; Douglas Dowie; Sergio Duarte Torres; Carsten Eickhoff; Richard Glassey; Karl Gyllstrom; Djoerd Hiemstra; Franciska de Jong; Frea Kruisinga; Kelly Ann Marshall; Sien Moens; Tamara Polajnar; et al. (Advances in Information Retrieval - 34th European Conference on IR Research, ECIR 2012, Barcelona, Spain, April 1-5, 2012. Proceedings, 2012)

A preliminary study using PageFetch to examine the searching ability of children and adults - James Purvis; Leif Azzopardi (Information Interaction in Context: 2012, IIix'12, Nijmegen, The Netherlands, August 21-24, 2012, 2012)

Practical considerations when filtering documents - Desmond Elliott; Leif Azzopardi (Information Interaction in Context: 2012, IIix'12, Nijmegen, The Netherlands, August 21-24, 2012, 2012)

EmSe: initial evaluation of a child-friendly medical search system - Carsten Eickhoff; Leif Azzopardi; Djoerd Hiemstra; Franciska de Jong; Arjen P. de Vries; Douglas Dowie; Sergio Duarte Torres; Richard Glassey; Karl Gyllstrom; Frea Kruisinga; Kelly Ann Marshall; Sien Moens; et al. (Information Interaction in Context: 2012, IIix'12, Nijmegen, The Netherlands, August 21-24, 2012, 2012)

SCAMP: a tool for conducting interactive information retrieval experiments - Gareth Renaud; Leif Azzopardi (Information Interaction in Context: 2012, IIix'12, Nijmegen, The Netherlands, August 21-24, 2012, 2012)

ALF: a client side logger and server for capturing user interactions in web applications - Leif Azzopardi; Myles Doolan; Richard Glassey (The 35th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '12, Portland, OR, USA, August 12-16, 2012, 2012)

MaSe: create your own mash-up search interface - Leif Azzopardi; Douglas Dowie; Kelly Ann Marshall; Richard Glassey (The 35th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '12, Portland, OR, USA, August 12-16, 2012, 2012)

PageFetch: a retrieval game for children (and adults) - Leif Azzopardi; James Purvis; Richard Glassey (The 35th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '12, Portland, OR, USA, August 12-16, 2012, 2012)

YooSee: a video browsing application for young children - Leif Azzopardi; Douglas Dowie; Kelly Ann Marshall (The 35th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '12, Portland, OR, USA, August 12-16, 2012, 2012)

Introduction to special issue on the second international conference on the theory of information retrieval - Leif Azzopardi; Dawei Song; Gabriella Kazai; Stephen Robertson; Stefan M. Rüger; Milad Shokouhi; Emine Yilmaz (Inf. Retr., 2011)

Extending the language modeling framework for sentence retrieval to include local context - Ronald T. Fernández; David E. Losada; Leif Azzopardi (Inf. Retr., 2011)

Finding interest in the stream - Richard Glassey; Leif Azzopardi (Bridging the Gulf: Communication and Information in Society, Technology, and Work - Proceedings of the 74th ASIS&T Annual Meeting, ASIST 2011, New Orleans, LA, USA, October 9-12, 2011, 2011)

Fu-Finder: a game for studying querying behaviours - Carly O'Neil; James Purvis; Leif Azzopardi (Proceedings of the 20th ACM Conference on Information and Knowledge Management, CIKM 2011, Glasgow, United Kingdom, October 24-28, 2011, 2011)

Towards a Living Lab for Information Retrieval Research and Development - A Proposal for a Living Lab for Product Search Tasks - Leif Azzopardi; Krisztian Balog (Multilingual and Multimodal Information Access Evaluation - Second International Conference of the Cross-Language Evaluation Forum, CLEF 2011, Amsterdam, The Netherlands, September 19-22, 2011. Proceedings, 2011)

Back to the Roots: Mean-Variance Analysis of Relevance Estimations - Guido Zuccon; Leif Azzopardi; Keith van Rijsbergen (Advances in Information Retrieval - 33rd European Conference on IR Research, ECIR 2011, Dublin, Ireland, April 18-21, 2011. Proceedings, 2011)

An Analysis of Ranking Principles and Retrieval Strategies - Guido Zuccon; Leif Azzopardi; C. J. van Rijsbergen (Advances in Information Retrieval Theory - Third International Conference, ICTIR 2011, Bertinoro, Italy, September 12-14, 2011. Proceedings, 2011)

On the use of Complex Numbers in Quantum Models for Information Retrieval - Guido Zuccon; Benjamin Piwowarski; Leif Azzopardi (Advances in Information Retrieval Theory - Third International Conference, ICTIR 2011, Bertinoro, Italy, September 12-14, 2011. Proceedings, 2011)

Investigating Subspace Distances in Semantic Spaces - Guido Zuccon; Leif Azzopardi; Enrico Gasco (Proceedings of the 2nd Italian Information Retrieval (IIR) Workshop, Milan, Italy, January 27-28, 2011, 2011)

The economics in interactive information retrieval - Leif Azzopardi (Proceeding of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2011, Beijing, China, July 25-29, 2011, 2011)

The interactive PRP for diversifying document rankings - Guido Zuccon; Leif Azzopardi; C. J. van Rijsbergen (Proceeding of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2011, Beijing, China, July 25-29, 2011, 2011)

JuSe: a picture dictionary query system for children - Tamara Polajnar; Richard Glassey; Leif Azzopardi (Proceeding of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2011, Beijing, China, July 25-29, 2011, 2011)

Report on the SIGIR 2010 workshop on the simulation of interaction - Leif Azzopardi; Kalervo Järvelin; Jaap Kamps; Mark D. Smucker (SIGIR Forum, 2010)

Improving Access to Large Patent Corpora - Richard Bache; Leif Azzopardi (Trans. Large Scale Data Knowl. Centered Syst., 2010)

How Quantum Theory Is Developing the Field of Information Retrieval - Dawei Song; Mounia Lalmas; Keith van Rijsbergen; Ingo Frommholz; Benjamin Piwowarski; Jun Wang; Peng Zhang; Guido Zuccon; Peter Bruza; Sachi Arafat; Leif Azzopardi; Emanuele Di Buccio; et al. (Quantum Informatics for Cognitive, Social, and Semantic Processes, Papers from the 2010 AAAI Fall Symposium, Arlington, Virginia, USA, November 11-13, 2010, 2010)

A comparison of user and system query performance predictions - Claudia Hauff; Diane Kelly; Leif Azzopardi (Proceedings of the 19th ACM Conference on Information and Knowledge Management, CIKM 2010, Toronto, Ontario, Canada, October 26-30, 2010, 2010)

A Case for Automatic System Evaluation - Claudia Hauff; Djoerd Hiemstra; Leif Azzopardi; Franciska de Jong (Advances in Information Retrieval, 32nd European Conference on IR Research, ECIR 2010, Milton Keynes, UK, March 28-31, 2010. Proceedings, 2010)

Query Performance Prediction: Evaluation Contrasted with Effectiveness - Claudia Hauff; Leif Azzopardi; Djoerd Hiemstra; Franciska de Jong (Advances in Information Retrieval, 32nd European Conference on IR Research, ECIR 2010, Milton Keynes, UK, March 28-31, 2010. Proceedings, 2010)

Using the Quantum Probability Ranking Principle to Rank Interdependent Documents - Guido Zuccon; Leif Azzopardi (Advances in Information Retrieval, 32nd European Conference on IR Research, ECIR 2010, Milton Keynes, UK, March 28-31, 2010. Proceedings, 2010)

A survey of patent users: an analysis of tasks, behavior, search functionality and system requirements - Hideo Joho; Leif Azzopardi; Wim Vanderbauwhede (Information Interaction in Context Symposium, IIiX 2010, New Brunswick, NJ, USA, August 18-21, 2010, 2010)

Interaction-based information filtering for children - Richard Glassey; Desmond Elliott; Tamara Polajnar; Leif Azzopardi (Information Interaction in Context Symposium, IIiX 2010, New Brunswick, NJ, USA, August 18-21, 2010, 2010)

Developing the Quantum Probability Ranking Principle - Guido Zuccon; Leif Azzopardi (IIR 2010 - Proceedings of the First Italian Information Retrieval Workshop, Padua, Italy, January 27-28, 2010, 2010)

Finding and filtering information for children - Desmond Elliott; Richard Glassey; Tamara Polajnar; Leif Azzopardi (Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, Geneva, Switzerland, July 19-23, 2010, 2010)

Estimating interference in the QPRP for subtopic retrieval - Guido Zuccon; Leif Azzopardi; Claudia Hauff; Keith van Rijsbergen (Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, Geneva, Switzerland, July 19-23, 2010, 2010)

Query quality: user ratings and system predictions - Claudia Hauff; Franciska de Jong; Diane Kelly; Leif Azzopardi (Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, Geneva, Switzerland, July 19-23, 2010, 2010)

Has portfolio theory got any principles? - Guido Zuccon; Leif Azzopardi; Keith van Rijsbergen (Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, Geneva, Switzerland, July 19-23, 2010, 2010)

Search system requirements of patent analysts - Leif Azzopardi; Wim Vanderbauwhede; Hideo Joho (Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, Geneva, Switzerland, July 19-23, 2010, 2010)

Improving sentence retrieval with an importance prior - Leif Azzopardi; Ronald T. Fernández; David E. Losada (Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, Geneva, Switzerland, July 19-23, 2010, 2010)

On the relationship between effectiveness and accessibility - Leif Azzopardi; Richard Bache (Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, Geneva, Switzerland, July 19-23, 2010, 2010)

A language modeling framework for expert finding - Krisztian Balog; Leif Azzopardi; Maarten de Rijke (Inf. Process. Manag., 2009)

Usage based effectiveness measures: monitoring application performance in information retrieval - Leif Azzopardi (Proceedings of the 18th ACM Conference on Information and Knowledge Management, CIKM 2009, Hong Kong, China, November 2-6, 2009, 2009)

Relying on topic subsets for system ranking estimation - Claudia Hauff; Djoerd Hiemstra; Franciska de Jong; Leif Azzopardi (Proceedings of the 18th ACM Conference on Information and Knowledge Management, CIKM 2009, Hong Kong, China, November 2-6, 2009, 2009)

Automatically Generating Queries for Prior Art Search - Erik Graf; Leif Azzopardi; Keith van Rijsbergen (Multilingual Information Access Evaluation I. Text Retrieval Experiments, 10th Workshop of the Cross-Language Evaluation Forum, CLEF 2009, Corfu, Greece, September 30 - October 2, 2009, Revised Selected Papers, 2009)

Automatically Generating Queries for Prior Art Search - Erik Graf; Leif Azzopardi; Keith van Rijsbergen (Working Notes for CLEF 2009 Workshop co-located with the 13th European Conference on Digital Libraries (ECDL 2009) , Corfù, Greece, September 30 - October 2, 2009, 2009)

The Combination and Evaluation of Query Performance Prediction Methods - Claudia Hauff; Leif Azzopardi; Djoerd Hiemstra (Advances in Information Retrieval, 31th European Conference on IR Research, ECIR 2009, Toulouse, France, April 6-9, 2009. Proceedings, 2009)

FPGA-accelerated Information Retrieval: High-efficiency document filtering - Wim Vanderbauwhede; Leif Azzopardi; Mahmoud Moadeli (19th International Conference on Field Programmable Logic and Applications, FPL 2009, August 31 - September 2, 2009, Prague, Czech Republic, 2009)

The Quantum Probability Ranking Principle for Information Retrieval - Guido Zuccon; Leif Azzopardi; Keith van Rijsbergen (Advances in Information Retrieval Theory, Second International Conference on the Theory of Information Retrieval, ICTIR 2009, Cambridge, UK, September 10-12, 2009, Proceedings, 2009)

Semantic Spaces: Measuring the Distance between Different Subspaces - Guido Zuccon; Leif Azzopardi; C. J. van Rijsbergen (Quantum Interaction, Third International Symposium, QI 2009, Saarbrücken, Germany, March 25-27, 2009. Proceedings, 2009)

Eraser Lattices and Semantic Contents - Alvaro Francisco Huertas-Rosero; Leif Azzopardi; C. J. van Rijsbergen (Quantum Interaction, Third International Symposium, QI 2009, Saarbrücken, Germany, March 25-27, 2009. Proceedings, 2009)

Effective query expansion for federated search - Milad Shokouhi; Leif Azzopardi; Paul Thomas (Proceedings of the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2009, Boston, MA, USA, July 19-23, 2009, 2009)

Query side evaluation: an empirical analysis of effectiveness and effort - Leif Azzopardi (Proceedings of the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2009, Boston, MA, USA, July 19-23, 2009, 2009)

Developing energy efficient filtering systems - Leif Azzopardi; Wim Vanderbauwhede; Mahmoud Moadeli (Proceedings of the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2009, Boston, MA, USA, July 19-23, 2009, 2009)

Revisiting logical imaging for information retrieval - Guido Zuccon; Leif Azzopardi; C. J. van Rijsbergen (Proceedings of the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2009, Boston, MA, USA, July 19-23, 2009, 2009)

Search engine predilection towards news media providers - Leif Azzopardi; Ciaran Owens (Proceedings of the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2009, Boston, MA, USA, July 19-23, 2009, 2009)

When is query performance prediction effective? - Claudia Hauff; Leif Azzopardi (Proceedings of the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2009, Boston, MA, USA, July 19-23, 2009, 2009)

Evaluating Personal Information Management Behaviour using Markov Models - David Elsweiler; Stefan Mandl; Leif Azzopardi (Fifth Conference Professional Knowledge Management: Experiences and Visions, March 25-27, 2009 in Solothurn, Switzerland, 2009)

Advances in Information Retrieval Theory, Second International Conference on the Theory of Information Retrieval, ICTIR 2009, Cambridge, UK, September 10-12, 2009, Proceedings - Leif Azzopardi; Gabriella Kazai; Stephen E. Robertson; Stefan M. Rüger; Milad Shokouhi; Dawei Song; Emine Yilmaz (Springer, 2009)

Contextual factors affecting the utility of surrogates within exploratory search - Ian Ruthven; Mark Baillie; Leif Azzopardi; Ralf Bierig; Emma Nicol; Simon O. Sweeney; Murat Yaciki (Inf. Process. Manag., 2008)

Evaluating epistemic uncertainty under incomplete assessments - Mark Baillie; Leif Azzopardi; Ian Ruthven (Inf. Process. Manag., 2008)

An analysis on document length retrieval trends in language modeling smoothing - David E. Losada; Leif Azzopardi (Inf. Retr., 2008)

Assessing multivariate Bernoulli models for information retrieval - David E. Losada; Leif Azzopardi (ACM Trans. Inf. Syst., 2008)

Revisiting the relationship between document length and relevance - David E. Losada; Leif Azzopardi; Mark Baillie (Proceedings of the 17th ACM Conference on Information and Knowledge Management, CIKM 2008, Napa Valley, California, USA, October 26-30, 2008, 2008)

Retrievability: an evaluation measure for higher order information access tasks - Leif Azzopardi; Vishwa Vinay (Proceedings of the 17th ACM Conference on Information and Knowledge Management, CIKM 2008, Napa Valley, California, USA, October 26-30, 2008, 2008)

A Formalization of Logical Imaging for Information Retrieval Using Quantum Theory - Guido Zuccon; Leif Azzopardi; C. J. van Rijsbergen (19th International Workshop on Database and Expert Systems Applications (DEXA 2008), 1-5 September 2008, Turin, Italy, 2008)

Accessibility in Information Retrieval - Leif Azzopardi; Vishwa Vinay (Advances in Information Retrieval , 30th European Conference on IR Research, ECIR 2008, Glasgow, UK, March 30-April 3, 2008. Proceedings, 2008)

A Methodology for Building a Patent Test Collection for Prior Art Search - Erik Graf; Leif Azzopardi (Proceedings of the 2nd International Workshop on Evaluating Information Access, EVIA 2008, National Center of Sciences, Tokyo, Japan, December 16, 2008, 2008)

Resolving Person Names in Web People Search - Krisztian Balog; Leif Azzopardi; Maarten de Rijke (Weaving Services and People on the World Wide Web, [features some of the cutting-edge research work that were presented at the Workshop Track of the 17th International World Wide Web Conference (WWW 2008) held at Beijing, China, from April 21-25, 2008], 2008)

Characterising through Erasing: A Theoretical Framework for Representing Documents Inspired by Quantum Theory - Alvaro Francisco Huertas-Rosero; Leif Azzopardi; C. J. van Rijsbergen (CoRR, 2008)

A Retrieval Evaluation Methodology for Incomplete Relevance Assessments - Mark Baillie; Leif Azzopardi; Ian Ruthven (Advances in Information Retrieval, 29th European Conference on IR Research, ECIR 2007, Rome, Italy, April 2-5, 2007, Proceedings, 2007)

UVA: Language Modeling Techniques for Web People Search - Krisztian Balog; Leif Azzopardi; Maarten de Rijke (Proceedings of the 4th International Workshop on Semantic Evaluations, SemEval@ACL 2007, Prague, Czech Republic, June 23-24, 2007, 2007)

Building simulated queries for known-item topics: an analysis using six european languages - Leif Azzopardi; Maarten de Rijke; Krisztian Balog (SIGIR 2007: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Amsterdam, The Netherlands, July 23-27, 2007, 2007)

Updating collection representations for federated search - Milad Shokouhi; Mark Baillie; Leif Azzopardi (SIGIR 2007: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Amsterdam, The Netherlands, July 23-27, 2007, 2007)

Broad expertise retrieval in sparse data environments - Krisztian Balog; Toine Bogers; Leif Azzopardi; Maarten de Rijke; Antal van den Bosch (SIGIR 2007: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Amsterdam, The Netherlands, July 23-27, 2007, 2007)

Intra-assessor consistency in question answering - Ian Ruthven; Leif Azzopardi; Mark Baillie; Ralf Bierig; Emma Nicol; Simon O. Sweeney; Murat Yakici (SIGIR 2007: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Amsterdam, The Netherlands, July 23-27, 2007, 2007)

Persuasive, Authorative and Topical Answers for Complex Question Answering - Leif Azzopardi; Mark Baillie; Ian Ruthven (Proceedings of The Sixteenth Text REtrieval Conference, TREC 2007, Gaithersburg, Maryland, USA, November 5-9, 2007, 2007)

Incorporating context within the language modeling approach for ad hoc information retrieval - Leif Azzopardi (SIGIR Forum, 2006)

Overview of WebCLEF 2006 - Krisztian Balog; Leif Azzopardi; Jaap Kamps; Maarten de Rijke (Evaluation of Multilingual and Multi-modal Information Retrieval, 7th Workshop of the Cross-Language Evaluation Forum, CLEF 2006, Alicante, Spain, September 20-22, 2006, Revised Selected Papers, 2006)

Overview of WebCLEF 2006 - Krisztian Balog; Leif Azzopardi; Jaap Kamps; Maarten de Rijke (Working Notes for CLEF 2006 Workshop co-located with the 10th European Conference on Digital Libraries (ECDL 2006), Alicante, Spain, September 20-22, 2006, 2006)

An Efficient Computation of the Multiple-Bernoulli Language Model - Leif Azzopardi; David E. Losada (Advances in Information Retrieval, 28th European Conference on IR Research, ECIR 2006, London, UK, April 10-12, 2006, Proceedings, 2006)

An Application Framework for Distributed Information Retrieval - Fabio Simeoni; Leif Azzopardi; Fabio Crestani (Digital Libraries: Achievements, Challenges and Opportunities, 9th International Conference on Asian Digital Libraries, ICADL 2006, Kyoto, Japan, November 27-30, 2006, Proceedings, 2006)

Towards better measures: evaluation of estimated resource description quality for distributed IR - Mark Baillie; Leif Azzopardi; Fabio Crestani (Proceedings of the 1st International Conference on Scalable Information Systems, Infoscale 2006, Hong Kong, May 30-June 1, 2006, 2006)

An evaluation of resource description quality measures - Mark Baillie; Leif Azzopardi; Fabio Crestani (Proceedings of the 2006 ACM Symposium on Applied Computing (SAC), Dijon, France, April 23-27, 2006, 2006)

Formal models for expert finding in enterprise corpora - Krisztian Balog; Leif Azzopardi; Maarten de Rijke (SIGIR 2006: Proceedings of the 29th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Seattle, Washington, USA, August 6-11, 2006, 2006)

Automatic construction of known-item finding test beds - Leif Azzopardi; Maarten de Rijke (SIGIR 2006: Proceedings of the 29th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Seattle, Washington, USA, August 6-11, 2006, 2006)

Adaptive query-based sampling for distributed IR - Leif Azzopardi; Mark Baillie; Fabio Crestani (SIGIR 2006: Proceedings of the 29th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Seattle, Washington, USA, August 6-11, 2006, 2006)

Adaptive Query-Based Sampling of Distributed Collections - Mark Baillie; Leif Azzopardi; Fabio Crestani (String Processing and Information Retrieval, 13th International Conference, SPIRE 2006, Glasgow, UK, October 11-13, 2006, Proceedings, 2006)

Contextual Information and Assessor Characteristics in Complex Question Answering - Cindy Azzopardi; Leif Azzopardi; Mark Baillie; Ralf Bierig; Emma Nicol; Ian Ruthven; Scott Sweeney (Proceedings of the Fifteenth Text REtrieval Conference, TREC 2006, Gaithersburg, Maryland, USA, November 14-17, 2006, 2006)

Evaluating User Studies in Information Access - Alex Bailey; Ian Ruthven; Leif Azzopardi (Context: Nature, Impact, and Role - 5th International Conference on Conceptions of Library and Information Sciences, CoLIS 2005, Glasgow, UK, June 4-8, 2005, Proceedings, 2005)

Age Dependent Document Priors in Link Structure Analysis - Claudia Hauff; Leif Azzopardi (Advances in Information Retrieval, 27th European Conference on IR Research, ECIR 2005, Santiago de Compostela, Spain, March 21-23, 2005, Proceedings, 2005)

Probabilistic hyperspace analogue to language - Leif Azzopardi; Mark A. Girolami; Malcolm K. Crowe (SIGIR 2005: Proceedings of the 28th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Salvador, Brazil, August 15-19, 2005, 2005)

Language Modeling Approaches for Enterprise Tasks - Leif Azzopardi; Krisztian Balog; Maarten de Rijke (Proceedings of the Fourteenth Text REtrieval Conference, TREC 2005, Gaithersburg, Maryland, USA, November 15-18, 2005, 2005)

Combining Thesauri-Based Methods for Biomedical Retrieval - Edgar Meij; Leonie IJzereef; Leif Azzopardi; Jaap Kamps; Maarten de Rijke (Proceedings of the Fourteenth Text REtrieval Conference, TREC 2005, Gaithersburg, Maryland, USA, November 15-18, 2005, 2005)

Topic based language models for ad hoc information retrieval - Leif Azzopardi; Mark Girolami; C. J. van Rijsbergen (IEEE International Joint Conference on Neural Networks, IJCNN 2004, Budapest, Hungary, 22-29 July, 2004, 2004)

User biased document language modelling - Leif Azzopardi; Mark A. Girolami; Cornelis Joost van Rijsbergen (SIGIR 2004: Proceedings of the 27th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Sheffield, UK, July 25-29, 2004, 2004)

Investigating the relationship between language model perplexity and IR precision-recall measures - Leif Azzopardi; Mark A. Girolami; Keith van Rijsbergen (SIGIR 2003: Proceedings of the 26th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, July 28 - August 1, 2003, Toronto, Canada, 2003)