Github user myui commented on the issue:
https://github.com/apache/incubator-hivemall/pull/149
@takuti so then, better to enable l2_norm by the default and
`-disable_l2norm` to disable l2 normalization. My concern is that L2
normalization performed worse for small datasets with adequate learning rate
`[0.1,1.0]`.
FieldAwareFactorizationMachineUDTFTest contains several tests. It's better
to find that accuracy will not be bad with new default options, enabling L2
normalization.---
