Integrating Knowledge-basedand Collaborative-filtering

AAAI Conferences 

Entry point: The item that the user chooses as a starting point can be considered a strongly positive preference, since the user is looking for something similar to it. Ending point: The final selection or buying decision can also be considered a positive rating. Tweaking: When a user critiques a returned item and moves on to something different, we can consider this a negative rating. Browsing: If the user navigates to other items in the returned set, we can consider this a weak negative rating: if the user truly liked the item he or she would probably not browse further. These heuristics are somewhat weak, since we sometimes find users who are exploring the system to see what it can do, applying tweaks not to get a specific recommendation, but to see what will come back.

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