Explicit feedback behavior: User expressly behavior of items preference.
Implicit Feedback behavior: not clearly reflect the preferences of the user's behavior.
Implicit feedback features
1. There is no negative feedback. Implicit Feedback can not judge whether or not not like it. The dominant feedback, can clearly distinguish between like it or not.
2. having congenital noise. Users buy a certain item, does not mean he likes, maybe a gift, perhaps bought after the discovery did not like.
3. Explicit feedback value represents the degree of preference, the confidence value represents the implicit feedback. Implicit feedback value is usually the frequency of operation, the more the frequency, do not represent greater preference value. For example, a user often see a unit series, the user may value the general preferences of the series, just because all broadcast every week, so the operation frequency is large, if the user of a movie like super, but might have seen once, Thus the reaction is not a large operation frequency large preference value. From this users often see this series this behavior can only be inferred that the user likes this series have great confidence, but the user preference value of this series is how much we can not evaluate.
4. Implicit approximate behavior requires assessment.
Original link: https: //blog.csdn.net/axuanwu/article/details/74765154