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Update README.md
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Yihong Chen committed Aug 16, 2017
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Expand Up @@ -23,12 +23,15 @@ Manual features include statistics of prior purchase history. As for automatic f
> * calculate score by taking inner product for <u,p>
> * similar operations on aisle and department level
> * both score <u,p> and compressed topic representations of users/items serves as good features
>
> WORD2VEC
> * similar as LDA, but only on product level
>
> LSTM
> * Interval between user u's sequential purchase of product p is modeled as a time sequence.
> * Use LSTM to construct regression model for predicting next value of this time sequence.
> * The predicted next interval serves as a good feature.
>
> DREAM
> * RNN and bayesian personalized rank based Model, refer to this repo for my implementation
> * DREAM provides <u,p> scores, dynamic user representaions and item embeddings.
Expand Down Expand Up @@ -56,32 +59,42 @@ Python Files

> `bayes_optim_lgb.py`
> * lightGBM model tuned by bayesian optimization
>
> `lgb_cv.py`
> * lightGBM model 5-fold cv
>
> `xgb_train_eval_test.py`
> * xgboost model
>
> `transactions.py`
> * craft features manually from raw transaction log/user purchase history
>
> `feats.py'
> * combine all features and make train/test dataset
>
> `inference.py`
> * construct orders using P(u,p)
>
> `evaluation.py`
> * some functions related to local evaluation
>
> `constants.py`
> * some constants such as file path
>
> `utils.py`
> * some useful functions
Jupyter notebbooks

> `EDA and Feat Craft`
> * dataset exploration and feature crafting
>
> `Evaluation and Bagging`
> * local evaluation and bagging models
>
> `Submission and Bagging`
> * generate submissions
## License

Copyright (c) 2017 Yihong Chen
Copyright (c) 2017 Yihong Chen

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