Are the 4 scenarios for only testing or training?

[cclvr]

Hi, I have read the paper MAMO and found it an interesting and novel paper.
Now I'm trying to reproduce it but not sure whether the 4 scenarios, including WW, WC, CW, CC, are used for training or not. If for training, the number of training samples will be too small for CW and CC scenarios. If only for testing, does that mean training on mixed setting and testing on separate settings?

Looking forward to your reply.

[dongmanqing]

Hi, thanks for your interest. Yes, the 4 scenarios are used for training. We mixed the 4 scenarios in formulating the records for one user in sequential (according to the rating time), -> i.e. in training we didn't consider the model performance under either specific scenario. In testing, we only consider the model performance on the query sets; for the 4 scenarios, we separately calculate the average performance over all query sets.