Dependence mapping method and system

A technology of dependency mapping and dependency syntax, applied in the field of dependency mapping, can solve problems such as incomplete mapping dependency tree, mapping error, and conflicting mapping information

Inactive Publication Date: 2012-10-31
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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Problems solved by technology

However, the mapping dependency tree obtained in this way is incomplete, and there are mapping errors and conflicting mapping information.

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  • Dependence mapping method and system
  • Dependence mapping method and system

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Embodiment Construction

[0053] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail through specific embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0054] In order to better understand the present invention, first a brief introduction to dependency mapping is given. figure 1 A schematic diagram of an example of existing dependency mapping is given. The source language string is "Bush held a talk with Sharon", the target language string is "Bush held a talk with Sharon", and the bilingual word alignment relationship is: "Bush" and "Bush", "and" and "with", " "Sharon" and "Sharon", "held" and "held", "talk" and "talk". According to the existing dependency mapping method, the dependency tree of the source language string is f...

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Abstract

The invention provides a dependence mapping method. The method comprises the following steps of: firstly based on a bilingual language database of a source language and a target language, acquiring dependence syntactical information of a target language through dependence mapping, and establishing a dependence syntactical analysis model and a dependence syntactical analyzer of the current target language; and then based on a mapping dependence feature instance set and a supervision-free feature instance set, training the dependence syntactical model of the target language so as to obtain an optimal dependence syntactical analysis model, and constructing a final target dependence syntactic analyzer through the optimal dependence syntactical analysis model, wherein the mapping dependence feature instance set is extracted from dependence syntactical information of the target language after the dependence mapping, and the supervision-free feature instance set is extracted from a dependence tree obtained from the syntactical analysis of a target language database by the dependence syntactical analyzer of the current target language. The dependence mapping method can keep the mapping dependence information to the greatest extent, and can process noise information in a robust mode.

Description

Technical field [0001] The invention belongs to the technical field of natural language processing, and particularly relates to a dependency mapping method. Background technique [0002] Dependent grammar is one of the most popular grammars in the field of natural language processing. Compared with phrase structure grammar, dependency grammar has both grammatical and semantic information, and has the following characteristics: dependency structure has the best phraseal cohesion properties; dependency relationship gives semantic information. Therefore, dependency grammar is a very attractive resource in the field of natural language processing. For some resources, there is a lack of language, a corresponding dependency tree library, or even a corresponding dependency tree standard. The lack of resources brings certain difficulties to the corresponding natural language processing tasks. At this time, using the dependency mapping method to map the knowledge of resource-rich langu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/27
Inventor 刘凯姜文斌吕雅娟刘群
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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