An overview on the state-of-the-art comparison of the three-contextualization paradigms

In this paper, we present the concept of context and the three-contextualization paradigms for incorporating contextual information in the recommendation process. We provide a comprehensive overview on the several novel approaches of contextual pre-filtering, contextual post-filtering and contextual modelling approaches. We then present state-of-the-art comparison across these three paradigms and raised some key concerns that are not fully addressed in the literature. This will help academicians and practitioners in comparing these three approaches to choose the best option according to their market strategy.