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ɾLightGBM
ɹɾmax_depth=1, lr=0.1
ɹɾmeta features
ɹɹɾtext length (question, answer)
ɹɹɾmeta data from stackexchange (Score, View, FavoriteCount, …)
Post-Process
LightGBM
Public: 0.45979, Private: 0.41440
Simple binning without meta features
Public: 0.45282, Private: 0.41387