-Function To Compute Product of Values in Bag
Sergey Goder 2013-05-03, 18:20
I'm creating a multinomial naive bayes classifier using pig and need to
compute the product of probabilities. There are an arbitrary number of
values in the bag so I would like to be able to use a function similar to
the builtin SUM to do this. I looked through the source code and found that
with some really simple changes to SUM.java I can create a PROD.java
function. I included it in my piggybank and have been using it successfully.
I was curious what the community thought about including this function as a
builtin function in a future release? Or would it make more sense to keep
this function as a udf in a piggybank.