Recommender extension Rating predictor

MeraMera Member Posts: 4 Newbie
edited April 2020 in Help
i need help in this problem i spent hours searching and didn't reach anything.
1) when i try to use cross validation with the rating prediction operator it gives an error saying expected a model but received a rating predictor so how to fix that ?

2) Also is there any way i can show accuracy when using the rating prediction operator as it only shows RMSE?

3) How can I decrease the RMSE, other than changing the size of test and training data sets and changing K as they are not working ?
Please help me save my project and thank you .

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