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Created October 31, 2012 08:09
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Pig Code to use UDF of accumulator interface
raw_data = load 'data' using ... as (model:chararray, ctr:double, clicks:int);
A = FOREACH raw_data GENERATE model as model, ctr as pctr, ((clicks > 0) ? 1 : 0) as clicked;
B = GROUP A by model;
C = FOREACH B {
D = ORDER A by pctr asc;
GENERATE com.mediav.ml.AccurateAuc(D.clicked);
}
STORE C INTO 'xxxx';
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