Top Answers

1. The default evaluation metric used with the objective 'binary:logistic' was changed from 'error' to 'logloss'
   6 votes
2. python pandas "groupby" and "if any" condition
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3. Use of 'is_unbalance' parameter in Lightgbm
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4. Scipy or bayesian optimize function with constraints, bounds and dataframe in python
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5. LightGbm: how to use eval_sample_weight
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