Method and device for recommending items

A project recommendation and project technology, applied in the information field, can solve the problems of cold start information, overload, data sparse, etc., to achieve the effect of solving data sparse

Inactive Publication Date: 2017-05-31
TCL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a method and device for item recommendation to solve the problems of data sparseness, cold start and information overload in the existing personalized recommendation technology

Method used

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  • Method and device for recommending items
  • Method and device for recommending items
  • Method and device for recommending items

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Embodiment Construction

[0049] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0050] In the embodiment of the present invention, when recommending, the project information within the preset distance range of the current location of the user to be recommended is obtained, and the candidate user group is obtained according to the project information; and then each of the user to be recommended and the candidate user group is calculated A candidate user's interactive behavior similarity and item rating similarity; calculate the composite similarity between the user to be recommended and each candidate user according to the interactive behavior similarity and item rating similarity...

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Abstract

The invention is suitable for the technical field of information and provides a method and a device for recommending items. The method comprises the following steps: acquiring item information within a preset distance scope on a present position of a to-be-recommended user; acquiring a candidate user group according to the item information; calculating an interactive behavior similarity and an item scoring similarity between the to-be-recommended user and each candidate user in the candidate user group; calculating a compound similarity between the to-be-recommended user and each candidate user according to the interactive behavior similarity and the item scoring similarity; selecting N candidate users with the maximal compound similarity and forming a neighbor set of the to-be-recommended user; acquiring the item concerned by each candidate user in the neighbor set; and forecasting a score of the item scored by the to-be-recommended user and recommending M items in the highest scores to the to-be-recommended user. According to the invention, the problems of sparse data and cold starting of the present individual recommendation technique can be solved and the item recommendation accuracy is promoted.

Description

technical field [0001] The invention belongs to the field of information technology, and in particular relates to a method and device for item recommendation. Background technique [0002] The personalized recommendation technology for the Internet establishes the user's interest model by mining the user's historical browsing information, purchase information, consumption frequency and product evaluation, and then recommends advertisements, products and other item information to the user according to the interest model. However, for users and items that join the recommendation system for the first time, because there is no historical record, the existing personalized recommendation counts cannot recommend to the user, nor can the newly added item be recommended to the user. With the rapid increase of users and items, there are more and more items without user ratings, which leads to the scarcity of matrix values, which seriously affects the accuracy of recommendation results...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30H04L29/08G06Q30/02G06Q30/06
CPCG06F16/9535G06Q30/0255G06Q30/0282G06Q30/0631H04L67/55
Inventor 冯研
Owner TCL CORPORATION
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