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Information retrieval method and system and medium

An information retrieval and candidate word technology, applied in the field of information retrieval, can solve the problems of insufficient accuracy and excessive information, and achieve the effects of improving accuracy, high semantic relevance, and saving retrieval time.

Pending Publication Date: 2021-01-01
XIAOGAN TIANCHUANG INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide an information retrieval method, system and medium to solve the problem of excessive information volume and low accuracy when directly using BERT to calculate all documents in the prior art. Insufficient technical issues

Method used

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  • Information retrieval method and system and medium
  • Information retrieval method and system and medium
  • Information retrieval method and system and medium

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Experimental program
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Embodiment 1

[0030] see figure 1 , figure 1 A flowchart of a preferred embodiment of the retrieval method provided by the present invention. The flow chart S10 of the information retrieval method provided by the present invention includes the following steps:

[0031] S1, providing multiple query keywords to obtain a pseudo-related document set;

[0032] S2. Process the pseudo-related document set according to the weight retrieval model and the semantic query of the concept network to obtain a plurality of candidate words for target expansion;

[0033] S3. Retrieve the plurality of target expansion candidate words to obtain a final retrieval result.

[0034] The information retrieval method provided by the present invention obtains a pseudo-related document set by providing a plurality of query keywords; processes the pseudo-related document set according to the semantic query of the weight retrieval model and the concept network, and obtains multiple target expansion candidate words; ...

Embodiment 2

[0059] The present invention also provides an information retrieval system, including a processor and a memory, where a computer program is stored on the memory, and when the computer program is executed by the processor, the information retrieval method provided in Embodiment 1 is realized.

[0060] The information retrieval system provided in this embodiment is used to implement the information retrieval method. Therefore, the information retrieval system also possesses the technical effects of the above information retrieval method, and will not be repeated here.

Embodiment 3

[0062] The present invention also provides a computer storage medium on which a computer program is stored, and when the computer program is executed by a processor, the information retrieval method in Embodiment 1 is realized.

[0063] The computer storage medium provided in this embodiment is used to implement the above information retrieval method. Therefore, the computer storage medium also possesses the technical effects of the above information retrieval method, which will not be repeated here.

[0064] In summary, in the information retrieval method, system and medium provided by the present invention, multiple query keywords are provided to obtain a pseudo-related document set; the pseudo-related document set is processed according to the weighted retrieval model and the semantic query of the concept network , to obtain a plurality of target expansion candidate words; the plurality of target expansion candidate words are retrieved to obtain a final retrieval result. Th...

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Abstract

The invention discloses an information retrieval method and system and a medium, and the method comprises the steps: providing a plurality of query keywords to acquire a pseudo-related document set; processing the pseudo-correlation document set according to a weight retrieval model and semantic query of a conceptual network to obtain a plurality of target extension candidate words; and retrievingthe plurality of target extension candidate words to obtain a final retrieval result. According to the information retrieval method and system and the medium disclosed by the invention, the user query efficiency and effect are greatly improved.

Description

technical field [0001] The present invention relates to the technical field of information retrieval, in particular to an information retrieval method, system and medium. Background technique [0002] In the era of rapid development of Internet technology, network information has shown an explosive growth trend. Browsing and obtaining the required information with the help of search engines has become an important part of people's daily life. However, the large number and variety of network resources bring convenience to people and make it difficult for users to obtain the information they really need efficiently and accurately. , has become a key point in the research of information processing technology. [0003] Pseudo Relevance Feedback (PRF) provides an automatic partial analysis method, which can automate the manual operation part of relevant feedback, and users can obtain better retrieval performance without participating in additional interactions. This method firs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/33G06F16/332
CPCG06F16/332G06F16/3331G06F16/3338
Inventor 鲁小玲
Owner XIAOGAN TIANCHUANG INFORMATION TECH CO LTD
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