배홍균/이연창’s paper has been accepted in

Title: A Competition-Aware Approach to Accurate TV Show Recommendation
Author: Hong-Kyun Bae, Yeon-Chang Lee, Kyungsik Han, and Sang-Wook Kim
Abstract
As the number of TV shows increases, designing recommendation systems to provide users with their favorable TV shows becomes of much importance. In a TV show domain, watching a TV show (i.e., giving implicit feedback to the show) among the TV shows broadcast at the same time frame implies that the currently watching show is the winner in the competition with others (i.e., losers). However, in previous studies, such a notion of limited competitions has not been considered in estimating the user’s preferences for TV shows. In this paper, we propose a new recommendation framework to take this new notion into account based on pair-wise models. Our framework is composed of the following ideas: (i) identify winners and losers by determining pairs of competing TV shows; (ii) learn the pairs of competing TV shows based on the confidence for the pair-wise preference between the winner and the loser; (iii) recommend the most favorable TV shows by considering the time factors with respect to users and TV shows. Using a realworld TV show dataset, our experimental results show that our proposed framework consistently improves the accuracy of recommendation by up to 38%, compared with the best state-ofthe-art method. The codes and datasets of our framework will be available in an external link (https://github.com/hongkyunbae/tvshow rs) upon acceptance.