# 21th place solution

thanks for my temamate,   my  single  model about 3.680 lb ,  and  my teammate's single  model about  3.677 lb  and 3.79 lb
feature engineer
agg feature
+-*/  about new hist agg feature and hist agg feature
countvevtor feature+feature select 
some date feature
word2vec and nn  oof feture
stacking model:
we have about  70 different   lgb and nn model ' oof    are used for stacking
stacking cv: 3.627    lb:3.669    pb:3.601
our codes  release here: [1]:
[https://github.com/bestpredicts/ELO](https://github.com/bestpredicts/ELO)
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