Method and device for noun word sense disambiguation based on dependency constraint and knowledge

A word sense disambiguation and dependent syntax technology, applied in semantic analysis, special data processing applications, instruments, etc., can solve problems such as improving and restricting the effect of word sense disambiguation

Active Publication Date: 2016-11-16
QILU UNIV OF TECH
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Problems solved by technology

These problems in the existing methods restrict the improvement of word sense disambiguation effect

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  • Method and device for noun word sense disambiguation based on dependency constraint and knowledge
  • Method and device for noun word sense disambiguation based on dependency constraint and knowledge
  • Method and device for noun word sense disambiguation based on dependency constraint and knowledge

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Embodiment Construction

[0073] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the invention will be further described in detail below in conjunction with the drawings and implementations.

[0074] Take the disambiguation process of the ambiguous noun cause in the sentence "The principal cause of homelessness is to be found in the large numbers of mentally ill people." as an example.

[0075] According to WordNet 3.0, the meaning information of the noun cause is shown in Table 1.

[0076] Table 1

[0077]

[0078] Among them, #n represents that the part of speech is a noun, and #1 to #5 represent five different meaning numbers.

[0079] The flow chart of the noun word sense disambiguation method based on dependency constraints and knowledge in the embodiment of the present invention, such as figure 1 shown, including the following steps.

[0080] Step 101, build a dependency knowledge base.

[0081] ...

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Abstract

The invention discloses a method and a device for noun word sense disambiguation based on dependency constraint and knowledge. The method comprises: performing dependency syntactic analysis on large-scale corpus, collecting obtained dependency tuples and counting frequency number of the dependency tuples, establishing a dependency knowledge base; performing dependency syntactic analysis on a sentence where an ambiguity noun is in, extracting 16 kinds of dependency tuples which meet a set condition, and using the dependency tuples as a dependency constraint set of the ambiguity noun; according to a semantic dictionary, for each meaning of the ambiguity noun, extracting a synonym set, an antonym set, and a hypernym set in sequence, and using the synonym set, the antonym set, and the hypernym set as word meaning representative word sets of the corresponding word meanings; according to the dependency knowledge base and the word meaning representative word sets, calculating posterior probability of each meaning of the ambiguity noun in the dependency constraint set; and according to the posterior probability, selecting the correct meaning of the ambiguity noun. Using the method can fully develop effect of the dependency syntactic analysis, so as to accurately and effectively determine the meaning of the ambiguity noun.

Description

technical field [0001] The present invention relates to the technical field of natural language processing, in particular to a noun meaning disambiguation method and device based on dependency constraints and knowledge. Background technique [0002] Word sense disambiguation refers to automatically determining the meaning of ambiguous words according to their context. Word sense disambiguation is a basic task in the field of natural language processing, which has a direct impact on machine translation, information retrieval, text classification, automatic summarization, etc. [0003] The word sense disambiguation method based on knowledge base is currently the only method that can really be applied to large-scale word sense disambiguation tasks. Its effect is mainly affected by three factors: one is the size and quality of the knowledge base, the other is the accuracy of context-related word selection, and the third is the calculation method of word-sense correlation. The ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/27
CPCG06F40/247G06F40/30
Inventor 鹿文鹏成金勇杜月寒孟凡擎
Owner QILU UNIV OF TECH
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