Group demand prediction method based on long-term and short-term interests and social influence
An influential, long-term and short-term technology, applied in the field of group demand prediction based on long-term and short-term interests and social influence, to reduce data sparsity, improve satisfaction and group prediction effect, and improve accuracy
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[0068] The present invention is further described below in conjunction with embodiment and accompanying drawing.
[0069] Such as figure 1 As shown, a group demand prediction method based on long-term and short-term interests and social influence includes the following steps:
[0070] Step 1, group division: divide groups according to user IP addresses;
[0071] Step 2, user access data processing: construct user interest-score association tables at different moments based on user historical access data to resources, and mine changes in user needs over time, including:
[0072] 1) Number and code the resource category, build a resource category label dictionary, and assign resources to different categories according to the resource attribute values, and then build a resource-category table;
[0073] 2) Construct two matrices with q rows and M columns, respectively, to store the access time and ratings of q users on M resources, that is, the user-resource access time table an...
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