Statement retrieval method and device

A sentence and query sentence technology, applied in digital data information retrieval, special data processing applications, instruments, etc., can solve the problems of single retrieval results and inability to detect the meaning of sentences, and achieve the effect of flexible form and rich retrieval results.

Inactive Publication Date: 2019-05-17
BEIJING QIYI CENTURY SCI & TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0004] When the above technical solution retrieves similar sentences from the corpus through the words or characters in the query sentence, the obtained similar sentences are all sentences with a large number of repeated characters with the query sentence, and the retrieval result is relatively single. The character form is different from the query sentence, but the sentence Statements with similar meanings to query statements cannot be checked out

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  • Statement retrieval method and device
  • Statement retrieval method and device
  • Statement retrieval method and device

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0048] The embodiment of the present application discloses a sentence retrieval method, see figure 1 As shown, the method includes:

[0049] S101. Construct a semantic feature vector of the query statement; wherein, the semantic feature vector is a feature vector containing semantic information;

[0050] Specifically, the above query statement is a benchmark for statement retrieval. In the sentence retrieval scenario, the sentence similar to the above query sentence is generally q...

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Abstract

The invention provides a statement retrieval method and device, and the method comprises the steps: constructing a semantic feature vector of a query statement; Wherein the semantic feature vector isa feature vector containing semantic information; Respectively calculating the similarity between the semantic feature vector of the query statement and the semantic feature vector of each statement in a preset corpus; And screening out statements of which the similarity between the semantic feature vectors and the semantic feature vectors of the query statements is greater than a set threshold from the corpus, and taking the statements as similar statements of the query statements. In the statement retrieval process, similar statements are no longer retrieved from the character or word similarity level; Compared with similar statements in which characters or words highly coincide with query statements obtained through retrieval, the similar statements retrieved by the method are more flexible in form and richer and more comprehensive in retrieval result.

Description

technical field [0001] The present application relates to the technical field of text retrieval, in particular to a sentence retrieval method and device. Background technique [0002] For a query statement, retrieving sentences similar to the query statement from a corpus is a common text retrieval application scenario. [0003] At present, the commonly used similar sentence retrieval method is based on the words or characters in the query sentence, and retrieves sentences with a high degree of coincidence with the words or characters in the query sentence from the corpus as similar sentences obtained by retrieval. [0004] When the above technical solution retrieves similar sentences from the corpus through the words or characters in the query sentence, the obtained similar sentences are all sentences with a large number of repeated characters with the query sentence, and the retrieval result is relatively single. The character form is different from the query sentence, but...

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Application Information

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IPC IPC(8): G06F16/332
Inventor 罗晓天
Owner BEIJING QIYI CENTURY SCI & TECH CO LTD
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