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Method and system used for generating knowledge graphs

A knowledge map and knowledge technology, applied in the field of knowledge map generation, can solve problems such as the inability to generate knowledge maps, and achieve the effect of saving labor costs

Inactive Publication Date: 2017-01-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is to overcome the technical defect in the prior art that the knowledge map cannot be generated based on various documents and materials mixed with pictures and texts in the field of exploration

Method used

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  • Method and system used for generating knowledge graphs
  • Method and system used for generating knowledge graphs
  • Method and system used for generating knowledge graphs

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0057] figure 1 It is a flow chart of the steps of the method for generating a knowledge graph provided in this embodiment. The method generates an initial knowledge graph (step S110) based on the initial knowledge graph framework including the attributes and associations between named entity types and the seed knowledge set (step S110). Classify all kinds of petroleum exploration knowledge according to the knowledge form and the concept categories of various entity objects (project category, geological object category, geological age category), etc. to establish a restrictive framework. This constraint framework stipulates whether there are (potential) associations between named entity types in multiple dimensions, and visually and intuitively shows the relationship between various types of knowledge in the field of oil exploration.

[0058] Determine the type of the graphic unit (step S120). In this embodiment, the graphic unit of the knowledge point to be extracted is iden...

Embodiment 2

[0074] image 3 It is a schematic structural diagram of a system for generating a knowledge graph provided in this embodiment. The system includes an initialization unit, a type judgment unit (not shown in the figure), a single graphic-text knowledge item identification unit, a graphic-text set knowledge item identification unit and a correction unit.

[0075] Wherein, the recognition unit of a single graphic-text knowledge item includes a knowledge discovery and extraction unit in a single text and a knowledge discovery and extraction unit in a single image. The unit of knowledge discovery and extraction within a single text includes two modules that act continuously: a module for named entity recognition within a single text and a module for discovering associations between named entities within a single text.

[0076] The main purpose of the named entity recognition module in a single text is to identify named entities involved in a single text. Based on the existing prof...

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Abstract

The invention discloses a method and system used for generating knowledge graphs. The method includes: generating the initial knowledge graphs; judging types of graphic units; identifying association relations among named entities in the singular graphic unit by taking an initial knowledge graph framework as a constraint condition and on the basis of the types of the graphic units; extracting the association relations among newly-added named entities and the named entities in a graphic unit set to form candidate knowledge items; modifying the candidate knowledge items and updating the initial knowledge graphs according to the modified candidate knowledge items. The association relations among the multiple and abundant named entities are automatically discovered, extracted and organized from a huge number of graphic datum by the aid of computers starting from the basic knowledge graph framework and a small seed-knowledge set, a knowledge graph structure can be rapidly, effectively and elaborately presented after determination of an expert system, and a great deal of labor cost is obviously saved in the process for generating the knowledge graphs.

Description

technical field [0001] The present invention relates to the technical field of computer graphics and text processing, in particular to a method and system for generating a knowledge map. Background technique [0002] Text is the most basic and commonly used information carrier. With the increasing popularity of the Internet, text information expands rapidly. Therefore, it is necessary to effectively organize the knowledge in the text. Especially in professional fields such as geological exploration, it is often necessary to discover knowledge that should be collected systematically from massive text data, and then structure the collected knowledge for future query and modification. [0003] In the prior art, knowledge is often organized through knowledge graphs (or knowledge networks). The knowledge map (network) is generally generated based on some general methods and displayed through a series of visualization methods. The more commonly used methods are co-occurrence a...

Claims

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Application Information

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IPC IPC(8): G06T11/60
Inventor 唐先明陶鹏王晓丽邓达康郭攀红韩宝东陈长胜赵志成成尧
Owner CHINA PETROLEUM & CHEM CORP
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