Efficient may refer to:
Efficient (foaled 23 August 2003) is a grey Thoroughbred racehorse gelding, bred in New Zealand, who won the 2007 Melbourne Cup and the 2006 Victoria Derby, both times ridden by Michael Rodd.
Efficient was by the outstanding sire Zabeel from the mare Refused The Dance by Defensive Play (USA). He is a half brother to Guillotine, winner of the 2008 MVRC Dato Tan Chin Nam Stakes.
In his first campaign in the spring of 2006 he put together five consecutive wins including the Group 2 Aami Vase at Moonee Valley and ending with a win in the VRC Derby by 2½ lengths. Following his Derby win Efficient was entered into the Melbourne Cup field, run three days later. However, he did not pull up well enough and so was scratched from the race and spelled instead.
Returning in the autumn Efficient had a very light campaign of just two starts. In the 1,400 metre Group 3 Schweppervescence Cup he finished fourth behind Haradasun and fifth behind Miss Finland in the Group One Australian Guineas over 1,600 metres.
In the comparison of various statistical procedures, efficiency is a measure of the optimality of an estimator, of an experimental design, or of a hypothesis testing procedure. Essentially, a more efficient estimator, experiment, or test needs fewer observations than a less efficient one to achieve a given performance. This article primarily deals with efficiency of estimators.
The relative efficiency of two procedures is the ratio of their efficiencies, although often this concept is used where the comparison is made between a given procedure and a notional "best possible" procedure. The efficiencies and the relative efficiency of two procedures theoretically depend on the sample size available for the given procedure, but it is often possible to use the asymptotic relative efficiency (defined as the limit of the relative efficiencies as the sample size grows) as the principal comparison measure.
Efficiencies are often defined using the variance or mean square error as the measure of desirability.
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Aficionado aficionado
Aficionado aficionado
Art deco .. and a condo
I am a young aficionado
Aficionado aficionado
Aficionado aficionado
Aficionado aficionado
Art deco .. and a condo
I am a young aficionado
the court and the condo I am an young aficionado