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A method for constructing a knowledge map of a water affairs domain based on a Chinese text

A technology of domain knowledge and construction methods, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as smart water information fusion

Pending Publication Date: 2018-12-11
BEIJING UNIV OF TECH
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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a Chinese text-based method for constructing a knowledge map in the field of water affairs, aiming at solving the problem of information fusion of smart water affairs

Method used

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  • A method for constructing a knowledge map of a water affairs domain based on a Chinese text
  • A method for constructing a knowledge map of a water affairs domain based on a Chinese text
  • A method for constructing a knowledge map of a water affairs domain based on a Chinese text

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Embodiment Construction

[0044] The present invention provides a method for constructing a knowledge map in the field of water affairs based on Chinese text. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0045] see figure 1 . figure 1 It is a flow chart of a preferred embodiment of a Chinese text-based water domain knowledge map construction method of the present invention, as shown in the figure, and its implementation steps include the following:

[0046] Step 1: Construct the water concept lexicon in the java system, and put the constructed lexicon into the word text.

[0047] Step 2: Put the constructed water concept lexicon into the mysql database to construct the conceptual hierarchical relationship, and modify the unr...

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Abstract

The invention discloses a method for constructing a knowledge map of a water affairs field based on a Chinese text. The method comprises the following steps: climbing a large amount of water affairs text on the network, segmenting Chinese text by jieba word segmentation, removing stopped words after segmentation by stopwords list, using a TF-IDF method to obtain the weight of each concept word, setting a threshold, and retaining the concept words larger than the threshold to form the water concept thesaurus; then based on the connection with a CN-Dbprdia interface, obtaining the superior concept of water concept words, and constructing the structured water knowledge map; then connecting the water structured knowledge map with the water structured database table and water texts, and constructing the final water knowledge map; and finally, using the evaluation method to evaluate the hitch method. By combining different knowledge map construction methods and fully considering the fusion of multiple types of data between the knowledge maps, the method can improve the efficiency of water affair knowledge map construction, and improve the integrity and accuracy of the water affair knowledge map.

Description

technical field [0001] The present invention relates to the technical field of knowledge graph construction, and relates to a method for constructing a knowledge graph in the field of water affairs based on Chinese text, in particular to a weight calculation method based on TF-IDF, a CN-Dbpedia hierarchical relationship building method, and an edit distance and LDA similarity calculation A water affairs text domain knowledge map construction method based on the articulated method. Background technique [0002] At present, the research knowledge map construction mainly includes the following technologies: 1) Data model layer fusion: concept merging, concept merging of hyponymy and attribute merging, domestic and foreign researchers have made a lot of contributions in these aspects. Domestic knowledge graph mapping technology mainly includes dictionary wordnet, structure and instance-based methods, and uses background knowledge and previous knowledge to find matching result ou...

Claims

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Application Information

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IPC IPC(8): G06F17/30G06F17/27
CPCG06F40/289
Inventor 吕田田闫健卓
Owner BEIJING UNIV OF TECH
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