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<p>that are likely of interest to the user. Typically, a recommender system compares the user's profile to some reference characteristics. These characteristics may be related to item characteristics (<a href="page.php?w=content-based_filtering">content-based filtering</a>) or the user's social environment and past behavior (<a href="page.php?w=collaborative_filtering">collaborative filtering</a>).Depending on the system, the user can be associated to various kinds of interactions: ratings, bookmarks, purchases, likes, number of page visits etc.</p><p>
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