mengtingwan/chainrec

Mengting Wan, Julian McAuley, "Item Recommendation on Monotonic Behavior Chains", in Proc. of 2018 ACM Conference on Recommender Systems (RecSys'18), Vancouver, Canada, Oct. 2018.

chainrec's Issues

Request for the release of datasets?

Can you release all the datasets mentioned in your paper, including Steam, Yoochoose, Yelp, GoogleLocal and GoodReads?

Confusion about the preprocessing of steam dataset

I downloaded the steam dataset displayed on https://cseweb.ucsd.edu/~jmcauley/datasets.html, and I found that purchase and play behaviors are in the same file named "australian_users_items.json" while review and recommend data are in the file named "steam_reviews.json". To my disappointment, the users in these two files cannot be aligned in that users are indicated with the "user_id" attribute in "australian_users_items" but the "user_name" attribute in "team_reviews.json". Could you release the preprocessed dataset like Yoochoose in your repo?

Error when n_stage >2 ZeroDivisionError

Hi,

I am having the next error when I set the n_stage > 2.

---------------------------------------------------------------------------
ZeroDivisionError                         Traceback (most recent call last)
<ipython-input-23-9a97b7bcfeb2> in <module>()
----> 1 test_dataset(DATA_NAME="yoochoose", n_stage=4, method="chainRec_uniform", embed_size=16, lbda=0.1)

<ipython-input-22-87d22fb4e825> in test_dataset(DATA_NAME, n_stage, method, embed_size, lbda)
     13                               target_stage_id=(n_stage-1))
     14         myModel.load_samples(training_samples, validation_samples)
---> 15         myModel.train_edgeOpt()
     16 
     17         myModel.evaluation(myData.data_test, myData.user_item_map, topK=10)

<ipython-input-21-021074151cde> in train_edgeOpt(self)
    185                     _loss_vali += _loss_vali_batch
    186                     count_sample += len(xu1)
--> 187                 _loss_vali /= count_sample
    188 
    189                 if _loss_vali <= _loss_vali_min:

ZeroDivisionError: float division by zero

EDIT: Sorry! I think that I missunderstood what n_stage is. I think that this error is because the yoochoose dataset only have 2 stages, clicks and purchases, right?