ProdSearch
Personalized Product Search with Product Reviews
Amazon Search Dataset:
For each user, we sort his/her purchased items by time and divide items to train/validation/test in a chronological order.
Download the code and follow the ''Data Preparation'' section in this link except for splitting data in 4.3. Use "python ./utils/AmazonDataset/sequentially_split_train_test_data.py <indexed_data_dir> 0.2 0.3" instead.
Train/Test a TEM model
To train a transformer-based embedding model (TEM), run
python main.py --model_name item_transformer \ # TEM
--mode train \ # set it to test when evaluating a model
--pretrain_emb_dir PATH/TO/PRETRAINED_EMB_DIR \ # DATA_DIR for the pretrained word embeddings using reviews. If set to "", embeddings will be trained from scratch
--data_dir PATH/TO/DATA \ # <indexed_data_dir> generated when preparing the data, e.g. Amazon/reviews_Sports_and_Outdoors_5.json.gz.stem.nostop/mincount_5
--input_train_dir PATH/TO/SPLIT_DATA \ # Amazon/reviews_Sports_and_Outdoors_5.json.gz.stem.nostop/min_count5/seq_query_split
--save_dir PATH/TO/SAVE/TRAINED/MODELS \ # where to store or load models.
--decay_method adam \ # use the weight decay method in adam instead of noam
--max_train_epoch 20 --lr 0.0005 --batch_size 384 \
--uprev_review_limit 20 \ # the number of historically purchased items used for user.
--embedding_size 128 \
--inter_layers 1 \ # the number of layers for transformer
--ff_size 512 --heads 8 # other hyper-parameters that may need tune for training.
References
[1] Keping Bi, Qingyao Ai, W. Bruce Croft. A Transformer-based Embedding Model for Personalized Product Search. In Proceedings of SIGIR'20.