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Original Article

JJCIT. 2025; 11(1): 16-32


A Novel Evidential Collaborative Filtering Framework Based on Discounting Conflicting Preferences

khadidja BELMESSOUS, Faouzi SEBBAK, M'hamed MATAOUI.




Abstract

This paper presents a novel Framework to enhance Evidential Collaborative Filtering (ECF), a critical Recommender System (RS) designed for sensitive domains like healthcare and target tracking. The focus is on refining how user rating imperfections are handled, particularly in managing conflicting preferences during neighborhood selection to boost recommendation quality. The newly proposed ECF architecture integrates a Two-probabilities-focused approach with an advanced conflict management technique, employing Deng relative entropy and the Best Worst Method. This allows for assigning more accurate reliability weights to each user, improving preference selection and rating prediction in ECF. Experimental evaluations show that our model surpasses Two-probabilities-focused ECF in prediction error, precision, recall, and F-score.

Key words: Recommender Systems, Collaborative Filtering, Dempster-Shafer Theory, Conflict, Fusion.





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