kagle Elo Merchant Category Recommendation 21th solution rank 21/4200

single model

single model: lb 3.680 3.677 3.679 stacking: lb 3.669 pb 3.601

features: 1 agg features
2 +-*/ new agg features and history agg faeatures
3 date features
4 counter vector features
5 nn features
6 word2vec features