Makoto Yui created HIVEMALL-57:
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Summary: Add convenient options to `feature_hashing` and
`polynomial_feature`
Key: HIVEMALL-57
URL: https://issues.apache.org/jira/browse/HIVEMALL-57
Project: Hivemall
Issue Type: Improvement
Reporter: Makoto Yui
Priority: Minor
feature_hashing should have options like ..
- feature_hashing(features,"-int") that returns array<int>
- feature_hashing(features,"-weight") that always includes feature weights
polynomial_features should have options like ..
- polynomial_features(features, "-succinct") that returns `xxx` instead of
`xxx:1.0`, eliminating `1.0`.
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