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Method and system for linking entities

An entity and corresponding relationship technology, applied in special data processing applications, instruments, unstructured text data retrieval, etc., can solve the problems of high complexity, unclear words, inaccuracy, etc., to reduce complexity and quickly The effect of entity linking

Inactive Publication Date: 2016-01-06
INSPUR BEIJING ELECTRONICS INFORMATION IND
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Problems solved by technology

[0004] However, there may be ambiguous mentions in the user's input text, and entity linking is complex and may not be accurate

Method used

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  • Method and system for linking entities
  • Method and system for linking entities

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Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] The invention provides a method for entity linking, figure 1 A flowchart showing an embodiment of the entity linking method of the present invention, including:

[0043] Step S101: Preprocessing the input text and the preset knowledge base, obtaining each mentioned word in the input text, the context of each mentioned word, and entity keywords in the preset knowledge base;

[0044] Define the mentioned words in the input text that have been recognized ...

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Abstract

The invention discloses a method and a system for linking entities. The method comprises: pre-processing input texts and a knowledge base, obtaining mentions and contexts thereof, and entity keywords; retrieving candidate entities of each mention; classifying the mentions in two kinds according to the number of candidate entities of the mentions, the mentions whose number of candidate entities is smaller than a preset threshold being clear-cut mentions, and others being undefined mentions; performing first stage entity linking on the clear-cut mentions; through similarity of the mentions and the entities in the knowledge base, and similarity among the entities, using a method of a corresponding relation graph of a preset mention and the entities to complete screening of the candidate entities; and according to linked target entities, performing second stage linking on the undefined mentions. The method respectively performs calculation of entity linking in stages according to whether the mentions are the clear-cut mentions or not, so that complexity of the algorithm is greatly reduced. Through upgrading the contexts of the mentions, for example, the linked entities, entity linking can be performed on the mentions in a text more accurately and rapidly.

Description

technical field [0001] The invention relates to the field of intelligent information processing, in particular to an entity linking method and system. Background technique [0002] In the rapidly developing information age, the network has become the most important channel for human beings to obtain information. In recent years, with the rise of Wikipedia, a large-scale collaborative authoring resource, and the emergence of knowledge bases based on Wikipedia structured knowledge extraction, the development of intelligent information processing technology based on Wikipedia knowledge has been promoted. [0003] Entity linking is the process of mapping mentions in natural language text to a set of known target entities in a knowledge base. Through entity linking, the name in the free text is linked to the most appropriate related entity in the knowledge base, so that readers can understand the definition of domain terms more quickly and conveniently, improve the reading exper...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/35G06F16/3335
Inventor 薛昊原
Owner INSPUR BEIJING ELECTRONICS INFORMATION IND
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