xuwenhao

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';