Video search method based on search term ambiguity and user preferences
A video search and user technology, applied in the field of Internet video search, can solve problems such as poor effect
Inactive Publication Date: 2013-07-31
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
For search terms with relatively small ambiguity, it is not suitable for personalized search. If you do personalized search for such search terms, it is easy to get poor results
Method used
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[0022] like figure 1 Shown, the present invention is based on the video search method of retrieval term ambiguity and user preference and comprises the following steps:
[0023] (1) Obtain the video, extract relevant text information of the video, set up a text index for the relevant text information, extract video classification information, and set up a video classification model, and the relevant text information of the video includes titles and keywords;
[0024] (2) Input a search term and search the text index to obtain an ordered set of videos corresponding to the relevant text information and the search term;
[0025] (3) Generate ambiguous description information corresponding to the search term according to the click records corresponding to the search term. Specifically, the following formula is used:
[0026] ClickEntropy ( q ) = Σ p ∈ ...
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The invention discloses a video search method based on search term ambiguity and user preferences, which comprises the following steps of: obtaining a video, extracting related text information of the video, creating a text index for the related text information, extracting video classification information, and creating a video classification model; entering a search term and finding the text index so as to obtain a video ordered set corresponding to the related text information and the search term; generating ambiguity description information corresponding to the search term according to a click record corresponding to the search term; generating short-term preference description information and long-term preference description information of users in a search dialog; fitting the short-term preference description information and the long-term preference description information into user preference description information; and updating the short-term preference description informationand the long-term preference description information of the users according to the video selected by the users. According to the video search method, the vide search results can be rearranged and optimized for the users with different preferences. The video search method has the characteristics of high efficiency, strong availability, small intrusion to perception of users and the like.
Description
technical field [0001] The present invention relates to the field of Internet video search, and more specifically, the present invention relates to a video search method based on search word ambiguity and user preference. Background technique [0002] The number of videos on the Internet is increasing rapidly, and the method of classifying videos cannot enable users to quickly find the videos they need. It is inevitable to use the search method to locate the video required by the user. Content-based video search methods cannot be applied on a large scale due to the well-known semantic gap problem, so most of the existing video search methods are text-based video search methods. [0003] Video pages often have the problem that the relevant text is too short, and the link relationship cannot directly reflect the authority of the page. To this end, traditional text-based video search methods improve the search experience by utilizing video additional metadata (such as video d...
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IPC IPC(8): G06F17/30
Inventor 金海廖小飞陆枫贾旺喜
Owner HUAZHONG UNIV OF SCI & TECH