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.
Kai Londenberg 2013-05-03, 18:42
Sergey Goder 2013-05-03, 20:36
Julien Le Dem 2013-05-03, 22:46