Using Affective Features from Media Content Metadata for Better Movie Recommendations

Our goal in this paper aims to investigate the causality in the decision making of movie recommendations from a Recommender perspective through the behavior of users' affective moods. We illustrate a method of assigning emotional tags to a movie by auto-detection of the affective attributes in the movie overview. We apply a text-based Emotion Detection and Recognition model, which trained by the short text of tweets, and then transfer the model learning to detect the implicit affective features of a movie from the movie overview. We vectorize the affective movie tags through embedding to represent the mood of the movie. Whereas we vectorize the user's emotional features by averaging all the watched movie's vectors, and when incorporated the average ratings from the user rated for all watched movies, we obtain the weighted vector. We apply the distance metrics of these vectors to enhance the movie recommendation making of a Recommender. We demonstrate our work through an SVD based Collaborative Filtering (SVD-CF) Recommender. We found an improved 60\% support accuracy in the enhanced top-5 recommendation computed by the active test user distance metrics versus $40\%$ support accuracy in the top-5 recommendation list generated by the SVD-CF Recommender