Github user takuti commented on the issue:
https://github.com/apache/incubator-hivemall/pull/149
Note: I've extended LIBFFM code so it uses linear terms:
https://github.com/takuti/criteo-ffm/commit/9aca61d93ed8f583025729206ed0dbfd54806a44
However, I cannot observe significant difference between LogLoss achieved
with/without linear terms.---
