Github user myui commented on the issue:
https://github.com/apache/incubator-hivemall/pull/87
@takuti
- store feature type in GeneralLearnerBaseUDTF
https://github.com/takuti/incubator-hivemall/blob/95927f64104bf75d071c8665d64afb48837fcb02/core/src/main/java/hivemall/GeneralLearnerBaseUDTF.java#L222
- wrap feature writes to use type info
https://github.com/takuti/incubator-hivemall/blob/95927f64104bf75d071c8665d64afb48837fcb02/core/src/main/java/hivemall/GeneralLearnerBaseUDTF.java#L305
- wrap feature reads to use type info
https://github.com/takuti/incubator-hivemall/blob/95927f64104bf75d071c8665d64afb48837fcb02/core/src/main/java/hivemall/GeneralLearnerBaseUDTF.java#L483
Refer
https://github.com/apache/incubator-hivemall/blob/master/core/src/main/java/hivemall/fm/FactorizationMachineUDTF.java#L665
and
https://github.com/apache/incubator-hivemall/blob/master/core/src/main/java/hivemall/fm/FactorizationMachineUDTF.java#L630
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