1:00 PM - 1:20 PM
[4O2-J-2-04] EM-NMF ensemble method by weighted least squares method considering the number of evaluations
Keywords:Matrix Factorization, Recommendation System, Ensemble, Collaborative Filtering
In this study, we propose a method to assemble two matrices; (i)predicted evaluation matrix based on the approach of items with many evaluation oriented and (ii)the matrix based on the approach of items with small number of evaluation obtained. This approach is expected to improve the prediction accuracy for the evaluation.