Entity set extension method

An expansion method and entity technology, applied in the field of information extraction, can solve the problems of inaccurate expansion results, large time consumption of expansion process, low efficiency, etc., and achieve the effect of intelligent and accurate expansion results, guaranteed efficiency, and easy processing.

Active Publication Date: 2015-07-22
RENMIN UNIVERSITY OF CHINA
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Problems solved by technology

[0008] The present invention provides an entity set extension method, which aims to solve the problems of inaccurate

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Embodiment Construction

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] The technical solutions of the embodiments of the present invention can be specifically applied to the acquisition of named entity features, recommendation systems, QA systems, and knowledge base construction. The method can be implemented by an entity set extension device, which can be integrated in a network device, or can be set separate...

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Abstract

The invention provides an entity set extension method. The method comprises the steps that a seed entity set input by a user is acquired, and attribute information corresponding to each seed entity is determined in an RDF knowledge base according to the entity name of each seed entity in the seed entity set; according to the attribute information corresponding to each seed entity, same attributive characters corresponding to the seed entity set are determined, and other entities with the same attributive characters in the RDF knowledge base are determined to form an extension entity set; entities of the extension entity set are added to the seed entity set to obtain an extended entity set. According to the entity set extension method, the entity set extension method based on the RDF knowledge base is provided, due to the fact that the RDF knowledge base uses structured XML data, a server can excavate out semantic information among the seed entities, the extension result becomes more intelligent and accurate, and the extension efficiency of the entity set can be guaranteed.

Description

technical field [0001] The invention relates to information extraction technology, in particular to a method for expanding an entity set. Background technique [0002] Text Information Extraction refers to a text processing technology that extracts factual information such as entities (Entity), relations (Relation), and events (Event) of specified types from natural language texts, and forms structured data output. For example, information related to terrorist events: time, place, perpetrators, victims, targets, etc., is extracted from the text of cable news and broadcast television. [0003] The traditional information extraction task is the extraction of limited domain texts, limited categories of entities, relationships and events, etc., which greatly restricts the development and application of text information extraction technology. For example, the information extraction technology required by the question answering system far exceeds our usual research. Limited entit...

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Application Information

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IPC IPC(8): G06F17/30
Inventor 陈跃国杜小勇张香玲陈峻刘德海
Owner RENMIN UNIVERSITY OF CHINA
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