A method for dynamically updating knowledge map

A knowledge map and dynamic update technology, applied in the field of knowledge map, can solve the problems of difficulty in obtaining new data, bandwidth consumption, etc., achieve frequent and efficient updates, reduce time lag, and save network bandwidth.

Inactive Publication Date: 2018-12-18
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Third, regardless of whether there is a data set downloaded or not, the acquisition of all the data sets is very large, which will consume a lot of bandwidth; and the encyclopedia website will also restrict frequent crawling access, making it difficult to obtain new data

Method used

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  • A method for dynamically updating knowledge map
  • A method for dynamically updating knowledge map
  • A method for dynamically updating knowledge map

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Embodiment Construction

[0039] The implementation process of the present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings.

[0040] The present invention is based on the table entity linking method of multi-knowledge base, comprises following 5 steps:

[0041]1) Starting from popular titles on social networking sites and hot search words in search engines, entities are extracted from these titles and hot search words, and these entities are used as seed entities to be updated. This process is the discovery of seed entities, and the detailed steps are as follows:

[0042] (1) Grab hot titles and hot search words

[0043] Because the real-time hot topics searched by Sogou and the popular topics of Baidu Tieba have higher quality, they are used as the source of seed entities in this embodiment; the hot topics searched by Sogou and the topics of Baidu Tieba are constant, and there are 50 items in total in both title. In addition, the Baidu E...

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Abstract

The invention discloses a method for dynamically updating knowledge map, which is used for solving the synchronization problem between an encyclopedia knowledge map and a data source thereof. The invention takes the hot content on the World Wide Web as a starting point. Named entities are extracted as seed entities from which updates are likely to occur. Other entities associated with the seed entity are then captured on the encyclopedia site as extension entities. Then, a certain number of entities are obtained from the encyclopedia website to carry out feature engineering, and the update information of entity feature representation is mined by machine learning algorithm, and the predictor is constructed. Entities with high update probability are selected from the extended entities by using the predictor. Finally, the dynamic updating of knowledge map is realized by using seed entities and extended entities with high updating probability as updating objects under the circumstance of limited access to data sources.

Description

technical field [0001] The invention belongs to the field of knowledge graphs, and relates to a method for dynamically updating an encyclopedia knowledge graph. Background technique [0002] Knowledge graphs can be constructed from various forms of data sources, among which the encyclopedia knowledge graph is constructed from the data on the encyclopedia website. Generally speaking, due to the standardized management and maintenance of the data on the encyclopedia website, the data coverage is wide, the content is accurate, and the knowledge graph constructed is also of high quality. However, due to changes in knowledge and information on the encyclopedia website, existing data in the encyclopedia knowledge map will face outdated problems; in addition, for new words that appear on the encyclopedia website, the knowledge map cannot include them in time. [0003] In order to ensure that the data in the knowledge map is not outdated, it is necessary to keep the data in the kno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 漆桂林李丞李林吴天星
Owner SOUTHEAST UNIV
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