Chang Chen

Chang Chen

Menlo Park, California, United States
3K followers 500+ connections

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About

Math, Machine Learning, Software Engineering

Activity

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Education

Volunteer Experience

  • Volunteered Teacher

    Wuwei, Gansu Province

    - 2 months

    Education

    Unforgetable

Courses

  • Advanced Database Systems

    COMS E6111

  • Advanced Machine Learning

    COMS W4772

  • Analysis of Algorithms

    CSOR W4231

  • Artificial Intelligence

    -

  • Bayesian Models in Machine Learning

    EECS 6892

  • Big Data Analytics

    EECS 6893

  • Cloud Computing & Big Data

    COMS E6998

  • Computational Learning Theory

    COMS W4252

  • Data Structure and Algorithms

    -

  • Econometrics

    -

  • Intelligent Optimization Algorithms

    -

  • Machine Learning

    COMS W4771

  • Macroeconomics

    -

  • Mathematical Modeling

    -

  • Microeconomics

    -

  • Numerical Analysis

    -

  • Operating Systems

    COMS W4118

  • Operations Research

    -

  • Pattern Recognition

    -

  • Principle of Finance

    -

  • Project in Computer Science

    COMS 6901

  • Statistics

    -

  • Stochastic Process

    -

Projects

  • Adroid App: I NEED U

    Developed a location based app I NEED U, a platform for users to seek help or give a hand nearby, using AWS

    Other creators

  • Web App: Tweets Map

    Developed a web app to present tweet clusters, heat map and tweet sentiment for tweets on Google map in real time

  • [Course Projects] Advanced Database Systems

    -

    1. Implemented and optimized a user interactive information retrieval system using Bing API
    2. Implemented Apriori algorithm and conducted association rule mining on 311 Service Requests(2010-2014) dataset

  • [Course Projects] Advanced Machine Learning

    -

    1. Implemented Hierarchical Convolutional Kernel Network (CKN) to do image classification, examined the transformation invariance of CKN, compared the performance of CKN with Convolutional Neural Network (CNN)
    2. Applied Max Volume Embedding (MVE) with different kernels to Dimensionality reduction and visualization of high dimensional data, compared the performance of MVE, Semidefinite Embedding (SDE), and kernel principal component analysis (kernel PCA).
    3. Used Structured Support…

    1. Implemented Hierarchical Convolutional Kernel Network (CKN) to do image classification, examined the transformation invariance of CKN, compared the performance of CKN with Convolutional Neural Network (CNN)
    2. Applied Max Volume Embedding (MVE) with different kernels to Dimensionality reduction and visualization of high dimensional data, compared the performance of MVE, Semidefinite Embedding (SDE), and kernel principal component analysis (kernel PCA).
    3. Used Structured Support Vector Machine with HMM structure to predict the chords of songs.

  • [Course Projects] Operating Systems

    -

    1. Implemented different versions of HTTP server in C on Arch Linux, analyzed the performances of different strategies (single thread, multi-process, multi-process, thread pools)
    2. Implemented a Kernel Key-Value Store with complex locks for efficient concurrent reading and writing
    3. Implemented a simple virtual file system on Arch Linux
    4. Implemented a new scheduler and compared the performance with CFS and BFS

    Other creators

  • Stock Trend Prediction

    -

    Implemented Support Vector Machine (SVM) to predict the trend of the Shanghai Securities Composite Index, and achieved an accuracy of 59% by employing Genetic Algorithm based feature selection

Honors & Awards

  • MSTA Fellowship 2015

    Columbia University

  • Tsinghua University’s Undergraduate Visiting Researcher Fellowship

    Tsinghua University

  • Academic Scholarship

    Tsinghua University

  • Scholarship for Academic Excellence

    Tsinghua University

Languages

  • English

    Full professional proficiency

  • Chinese

    Native or bilingual proficiency

Organizations

  • 思源计划 十期

    Member

    - Present

  • Student Union, Department of Automation

    Associate President, Director

    -

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