Recommender extension Rating predictor

Mera

Hello,
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 .

rfuentealba

Hello @Mera,

On 1), you are using cross validation with something that is not a model. That also explains why you can't show accuracy (2).

Can you provide us your model to understand what are you doing?

All the best,

Rod.