madlib/madlib — pull request #146 by renyi533 (2012-05-10 03:35:03+00:00)
Title: Fix madlib-493

Currently, there are two existing issues related with missing value handling for continuous features

Firstly, even if users set 'IGNORE', we still replace the missing values.

Secondly, we replace the missing value with the existing minimum value. It is better for us to use average value instead.

We fixed this issue in this pull request.