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Method and device for relation extraction, equipment and medium

A technology of relationship extraction and relationship, applied in the computer field, can solve the problems of poor interpretability of long-range relationships, and achieve the effects of good relationship extraction performance, high portability, and good interpretability

Active Publication Date: 2022-01-07
BEIJING YOUZHUJU NETWORK TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the interpretability of the long-range relationship extracted by the above method is poor

Method used

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  • Method and device for relation extraction, equipment and medium
  • Method and device for relation extraction, equipment and medium
  • Method and device for relation extraction, equipment and medium

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Embodiment Construction

[0020] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the drawings, it should be understood that the disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein; A more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for exemplary purposes only, and are not intended to limit the protection scope of the present disclosure.

[0021] In the description of the embodiments of the present disclosure, the term "comprising" and its similar expressions should be interpreted as an open inclusion, that is, "including but not limited to". The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be read as "at least one ...

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Abstract

The invention provides a method and device for training a relation extraction model, equipment and a storage medium. The method described herein includes the steps of determining a probability distribution of a set of rules for describing logic of a connection between a pair of target entities under a given triple condition based on the given triple consisting of the pair of target entities in a document and a target relationship associated with the pair of target entities. Based on the probability distribution of the set of rules under a given triad condition, a probability distribution of a score under the given triad condition is determined, the score indicating whether the target relationship in the document is valid for the target entity pair. A trained relationship extraction model is obtained by maximizing a likelihood function of a parameter of a probability distribution of the scores under given triad conditions based on the flag values corresponding to the scores. According to the fact of the present disclosure, by utilizing rules, long-range dependencies of relationships can be readily captured and better interpretability can be provided.

Description

technical field [0001] Various implementations of the present disclosure relate to the computer field, and more specifically, relate to a method, device, device, and computer storage medium for relation extraction. Background technique [0002] Currently, document-level relation extraction methods have attracted much attention. Document-level relational extraction can be applied to fields such as question answering and search. Typically, sequence-based models or graph-based models can be leveraged to account for longer contexts and long-range dependencies of relationships in documents. For example, the representation of long-range relationships can be computed through pooling operations, or the nodes in the graph can be used to represent distant entities in documents, so as to better characterize the long-range relationships between entities. [0003] However, the interpretability of the long-range relationships extracted by the above methods is poor. Therefore, there is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/28G06N5/04G06N20/00
CPCG06F16/288G06N5/04G06N20/00
Inventor 孙长志茹栋宇
Owner BEIJING YOUZHUJU NETWORK TECH CO LTD
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