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Time sequence knowledge graph generation method and device, equipment and medium

A technology of knowledge graph and time series, applied in the field of knowledge graph and computer, it can solve the problems of not supporting time information and low accuracy of time expression, so as to ensure the quality of corpus, improve the accuracy of expression and the comprehensiveness of knowledge, and improve the accuracy of expression Effect

Pending Publication Date: 2020-06-02
BEIJING BAIDU NETCOM SCI & TECH CO LTD
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Problems solved by technology

[0003] However, the current general-purpose knowledge triplets are not accurate in expressing knowledge in time, and can only be simply represented by discrete time states
In addition, as a measurement method, time itself can be calculated. Due to the low accuracy of time expression of knowledge, knowledge does not support the calculation of time information.

Method used

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  • Time sequence knowledge graph generation method and device, equipment and medium
  • Time sequence knowledge graph generation method and device, equipment and medium
  • Time sequence knowledge graph generation method and device, equipment and medium

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Embodiment Construction

[0060] Exemplary embodiments of the present application are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present application to facilitate understanding, and they should be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

[0061] figure 1 It is a flow chart of a method for generating a time-series knowledge graph according to an embodiment of the present application. This embodiment can be applied to the case of constructing a time-series knowledge graph including effective time intervals of entity relationships by performing knowledge extraction on corpus. The method of this embodime...

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Abstract

The embodiment of the invention discloses a time sequence knowledge graph generation method and device, equipment and a medium, and relates to the knowledge graph technology. The method comprises thesteps: obtaining a corpus comprising time information; carrying out the multivariate data extraction on the corpus, wherein multivariate data comprises entity pairs, entity relations and target time intervals of the entity relations, and the target time intervals are used for representing valid deadlines of the entity relations; based on the entity pair, the entity relation and the target time interval of the entity relation, generating a time sequence knowledge graph. The embodiment of the invention provides a mode for generating the time sequence knowledge graph based on the structured dataformat containing the time interval, the data format for constructing the time sequence knowledge graph is normalized in a unified mode, and the expression precision of the time information of knowledge in the knowledge graph is improved.

Description

technical field [0001] The embodiments of the present application relate to computer technology, specifically to knowledge graph technology, and in particular to a method, device, device, and medium for generating a time-series knowledge graph. Background technique [0002] A knowledge graph is a semantic network that uses structured information to represent real-world knowledge from a semantic perspective, and can formally describe real-world things and their relationships. Knowledge refers to the description of objective facts about the real world in the knowledge graph, usually including entity pairs (subject S-object O pair) and the relationship (P) between them, expressed in the form of SPO triples. [0003] However, the current general-purpose knowledge triplets do not have high precision in expressing knowledge in time, and can only be simply represented by discrete time states. In addition, as a measurement method, time itself can be calculated and operated. Since t...

Claims

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Application Information

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IPC IPC(8): G06F16/36G06F40/295
CPCG06F16/367G06F40/30G06F40/35G06F16/9024G06F16/36G06F40/295G06F16/2477G06F16/2264G06N20/00G06N5/02G06N5/04
Inventor 黄昉李双婕史亚冰蒋烨张扬朱勇
Owner BEIJING BAIDU NETCOM SCI & TECH CO LTD
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