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Posted to issues@spark.apache.org by "zhengruifeng (Jira)" <ji...@apache.org> on 2020/07/07 04:01:00 UTC

[jira] [Created] (SPARK-32202) tree models auto infer compact integer type

zhengruifeng created SPARK-32202:
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             Summary: tree models auto infer compact integer type
                 Key: SPARK-32202
                 URL: https://issues.apache.org/jira/browse/SPARK-32202
             Project: Spark
          Issue Type: Improvement
          Components: ML
    Affects Versions: 3.1.0
            Reporter: zhengruifeng


a feature from [LightGBM|https://lightgbm.readthedocs.io/en/latest/Parameters.html#max_bin]:

 

"LightGBM will auto compress memory according to {{max_bin}}. For example, LightGBM will use {{uint8_t}} for feature value if {{max_bin=255}}"

 

 

 



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