DeepInterestNetwork

Deep Interest Network for Click-Through Rate Prediction

Important Statement

This code is a demo to implement DIN on Amazon data. Unfortunately, the code quality is realy poor and there are many problems with this version of the code. Thus, we did major code refactoring and publish the new version of code in DIEN and XDL. We strongly recommend you to use DIEN. Moreover, the wrong way to apply BatchNorm in DIN brings a faulty experimental result. We fix the bug and report the new results of DIN on Amazon(Electro):

Model	GAUC
PNN	0.8679
deepFM	0.8683
DIN	0.8698
DIN with Dice	0.8711

The updated training log can be found in DIN

Introduction

This is an implementation of the paper Deep Interest Network for Click-Through Rate Prediction Guorui Zhou, Chengru Song, Xiaoqiang Zhu, Han Zhu, Ying Fan, Na Mou, Xiao Ma, Yanghui Yan, Xingya Dai, Junqi Jin, Han Li, Kun Gai

Thanks Jinze Bai and Chang Zhou.

Bibtex:

@article{Zhou2017Deep,
  title={Deep Interest Network for Click-Through Rate Prediction},
  author={Zhou, Guorui and Song, Chengru and Zhu, Xiaoqiang and Ma, Xiao and Yan, Yanghui and Dai, Xingya and Zhu, Han and Jin, Junqi and Li, Han and Gai, Kun},
  year={2017},
}

Requirements

Python >= 2.6.1
NumPy >= 1.12.1
Pandas >= 0.20.1
TensorFlow >= 1.4.0 (Probably earlier version should work too, though I didn't test it)
GPU with memory >= 10G

Download dataset and preprocess

Step 1: Download the amazon product dataset of electronics category, which has 498,196 products and 7,824,482 records, and extract it to raw_data/ folder.
```
mkdir raw_data/;
cd utils;
bash 0_download_raw.sh;
```
Step 2: Convert raw data to pandas dataframe, and remap categorical id.
```
python 1_convert_pd.py;
python 2_remap_id.py
```

Training and Evaluation

This implementation not only contains the DIN method, but also provides all the competitors' method, including Wide&Deep, PNN, DeepFM. The training procedures of all method is as follows:

Step 1: Choose a method and enter the folder.
```
cd din;
```
Alternatively, you could also run other competitors's methods directly by cd deepFM cd pnn cd wide_deep, and follow the same instructions below.
Step 2: Building the dataset adapted to current method.
```
python build_dataset.py
```

We put a processed data 'dataset.pkl' in DeepInterestNetwork/din. Considering the GitHub's file size limit of 100.00 MB, we split it into 3 file aa ab ac.

cat aa ab ac > dataset.pkl

* Step 3: Start training and evaluating using default arguments in background mode.

python train.py >log.txt 2>&1 &

* Step 4: Check training and evaluating progress.

tail -f log.txt tensorboard --logdir=save_path



## Dice
There is also an implementation of Dice in folder 'din', you can try dice following the code annotation in `din/model.py` or replacing model.py with model\_dice.py