Book keyword search-oriented user theme privacy protection method and system

Abstract

The invention discloses a book keyword search-oriented user theme privacy protection method and system. The method comprises the following steps: (1) obtaining a current user query and a user history query sequence to synthesize a user query sequence; (2) constructing a pseudo book query sequence for the user query sequence, so that the pseudo book query sequence is accurate in query result, privacy-safe and highest in query efficiency; and (3) executing the pseudo query sequence to obtain an intermediate book record set, executing current user query on the intermediate book record set by the trusted end, and obtaining a result book record set and returning the result book record set to the user. The system runs on a trusted client, and is signally connected to a client running on a user interface and an untrusted server, and further comprises a user query acquisition module, a pseudo query construction module and a result screening module. According to the method, the user query sequence is modified carefully, the real book query theme of the user is blurred on the premise that the query accuracy is not damaged, and the privacy security of the user theme is effectively protected.

Description

technical field [0001] The invention belongs to the field of privacy protection, and more specifically relates to a method and system for protecting user theme privacy oriented to book keyword search. Background technique [0002] With the rapid development of the Internet, online text data continues to explode. Text search services can help users quickly obtain target data from massive text documents according to the query keywords provided by users, and have become one of the most popular network information services. Keyword book search service refers to the acquisition of target book information containing user-specified keywords from digital book databases. It is one of the most important and common information services in digital libraries, and it is also a common and representative text search service. . [0003] Although keyword book search services can help users obtain unstructured book data intuitively and efficiently, user queries themselves may potentially reve...

AI Technical Summary

Problems solved by technology

Due to the rewriting of user service request data, this type of method usually has a negative impact on the accuracy of the service, that is, its privacy protection needs to be sacrificed at the expense of service quality, and it is difficult to meet the actual application needs of text search.

③The dummy method is to pre-add the dummy service request before the user service request is exposed to the server, and send the dummy request and the real request to the untrusted server side, making it difficult for the server to obtain the user's real request data

However, the existing user privacy protection technology still cannot meet the practical application requirements of modern book search services in terms of practicability, efficiency, accuracy, security, etc., and it is still necessary to develop a new user topic privacy protection method for book keyword search

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