English word sense disambiguation method based on phrase structure syntax tree

A word meaning disambiguation and syntax tree technology, applied in natural language data processing, special data processing applications, instruments, etc., to achieve accurate calculation, avoid inaccurate screening and weighting, and improve the accuracy rate

A word meaning disambiguation and syntax tree technology, applied in natural language data processing, special data processing applications, instruments, etc., to achieve accurate calculation, avoid inaccurate screening and weighting, and improve the accuracy rate

CN105677639AInactive Publication Date: 2016-06-15QILU UNIV OF TECH
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  • English word sense disambiguation method based on phrase structure syntax tree

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Embodiment Construction

[0044] The present invention will be further described in detail below in conjunction with specific embodiments.

[0045] Take the sentence "⊙The coaches 'teaching football a standing on the bus @." as an example, disambiguate the ambiguous word coach in it.

[0046] According to the WordNet3.0 dictionary, the meaning of the ambiguous word coach is shown in Table 1.

[0047] Table 1 The meaning table of coach#n

[0048] lexical number

Glossary

coach#n#1

coach, manager, handler -- ((sports) someone in charge of training an athlete or a team)

coach #n #2

coach, private instructor, tutor -- (a person who gives private instruction (as in singing, acting, etc.))

coach #n #3

passenger car, coach, carriage -- (a railcar where passengers ride)

coach #n #4

coach, four-in-hand, coach-and-four -- (a carriage pulled by four horses with one driver)

coach #n #5

bus, autobus, coach, charabanc, double-decker, jitney, motorbus, ...

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Abstract

The invention relates to an English word sense disambiguation method based on a phrase structure syntax tree, and belongs to natural language processing. The method comprises the steps that 1, phrase structure syntax analysis is conducted on a sentence, and a phrase structure syntax tree of the sentence is generated; 2, word sense relevant words are screened by taking the phrase structure syntax tree as the basis; 3, a word sense disambiguation model is constructed, and correct word sense is determined by evaluating the intimate level of word sense of ambiguous words and the word sense relevant words; 4, parameters of the word sense disambiguation model in the step 3 are optimized according to a word sense tagged corpus through a genetic algorithm; 5, the step 1 and the step 2 are repeatedly conducted on words to be subjected to disambiguation, and correct word sense of the ambiguous words is determined through the optimized word sense disambiguation model obtained in the step 4. According to the English word sense disambiguation method based on the phrase structure syntax tree, the phrase structure syntax tree is utilized for screening the word sense relevant words and giving disambiguation weight to the word sense relevant words, interference of noise words can be reduced, the computing accuracy of word sense relevancy is improved, and the accuracy of English word sense disambiguation is improved.

Description

technical field [0001] The invention relates to an English word sense disambiguation method, in particular to an English word sense disambiguation method based on a phrase structure syntax tree, and belongs to the technical field of natural language processing. Background technique [0002] Word sense disambiguation refers to judging the correct meaning of an ambiguous word according to its context. Word meaning is the basic unit that constitutes the meaning of a sentence and the premise of understanding a sentence. Word sense disambiguation is a basic task in the field of natural language processing, and has a wide range of application requirements in machine translation, information retrieval, text classification, question answering systems and other fields. [0003] The meaning of an ambiguous word is determined by its context. The ability to accurately select contextual word sense related words will directly affect the performance of the word sense disambiguation syste...

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Application Information

Patent Timeline
15 Jun 2016
Publication
CN105677639A
IPC
G06F17/27
CPC
G06F40/242; G06F40/253
Inventors
鹿文鹏; 成金勇