https://www.kaggle.com/dhc321/quora-question-pairs/test-quora/code
https://www.kaggle.com/irenedo/quora-question-pairs/data-analysis-xgboost-starter-0-35460-lb-f072f3
https://www.kaggle.com/c/quora-question-pairs/data
./Minjung/HYM_5.ipynb xgboost code
./HYM_LSTM.ipnyb lstm code
./combine_lstm_xgboost.py data linear ensemble code