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EP0403660A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Machine translation system

Assignee: CSK Corp
•
Filing: 1989-12-15
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Granted: —
•
Expires: 2009-12-15
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Abstract

Abstract This invention relates to a machine translation system for automatically translating Japanese into a target language. Conventional translation systems have drawbacks such as low processing efficiency because of the necessity of cumbersome pre-editing process etc. In the machine translation system of the invention, the syntactic analysis which is a principal process in machine translation comprises the following steps: picking up an analysis rule corresponding to the combination of words from a part-of-speech matrix table that describes analysis rules corresponding to combinations of interlinked and interlinking words in order to recognize the presence of a syntactic link; successively stacking the words in which a syntactic link is recognized to be established as a partial analysis tree; and outputting an analysis tree corresponding to the original on the basis of the stacked partial analysis trees. Therefore, the number of rules for the syntactic analysis are only the square of the number of parts of speech. Unlike the prior art, therefore, there is no need of the pre-editing process, and Japanese in any style can be efficiently translated.

Inventors

  • 👤 Akira 6-30 Nukuiminami-Cho 3-Chome Takagi
  • 👤 Jun Takada
  • 👤 Minoru Yukawa

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-29 13:58
CPC Classifications
G; G06; G06F; G06F40/00; G06F40/20; G06F40/205; G06F40/211; G06F40/268; G06F40/40; G06F40/55

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 260 words
A machine translation system having: a morpheme analysis step in which an input source sentence is segmented into words and grammatical and semantic information associated with each of the words is annexed to the same word; a syntactic analysis step in which an analysis tree of the original sentence is formed by analyzing the modification structure between the words indentified by the morpheme analysis step on the basis of the grammatical and semantic information and analysis rules; a syntactic conversion step in which the analysis tree obtained by the syntactic analysis step is converted into another analysis tree from which a sentence can be formed in the target language. a sentence generation step in which a translated proto-sentence is formed on the basis of generative rules; and a morpheme synthesis step in which each of the words of the proto-translation sentence is inflected of the basis of additional information; said machine translation system being characterized in that the syntactic analysis step includes the steps of: the determination whether or not any modification relationship is to be established for each of the pairs of the words by extracting a rule corresponding to that combination of parts of speech from a part of speech matrix table in which analysis rules are described for the various combinations of the parts of speech of the modifying and head words; successively stacking each of these word combinations as segments of the anaysis tree for modification relationships have been established; and displaying an analysis tree corresponding to the original sentence from the stacked analysis tree segments.
Claim 2
Dependent Claim 260 words
A machine translation system having: a morpheme analysis step in which an input source sentence is segmented into words and grammatical and semantic information associated with each of the words is annexed to the same word; a syntactic analysis step in which an analysis tree of the original sentence is formed by analyzing the modification structure between the words indentified by the morpheme analysis step on the basis of the grammatical and semantic information and analysis rules; a syntactic conversion step in which the analysis tree obtained by the syntactic analysis step is converted into another analysis tree from which a sentence can be formed in the target language. a sentence generation step in which a translated proto-sentence is formed on the basis of generative rules; and a morpheme synthesis step in which each of the words of the proto-translation sentence is inflected of the basis of additional information; said machine translation system being characterized in that the syntactic analysis step includes the steps of: the determination whether or not any modification relationship is to be established for each of the pairs of the words by extracting a rule corresponding to that combination of parts of speech from a part of speech matrix table in which analysis rules are described for the various combinations of the parts of speech of the modifying and head words; successively stacking each of these word combinations as segments of the anaysis tree for modification relationships have been established; and displaying an analysis tree corresponding to the original sentence from the stacked analysis tree segments.
Claim 3
Dependent Claim 74 words
A machine translation system according to claim 1, wherein a part of speech Interconnection table in which linkage information concerning whether or not linkage between words is possible is stored and a dictionary in which grammatical and semantic information to be annexed to words are provided, and wherein in the morpheme analysis step determines the existence of any inflection on each morpheme by referring to the part of speech linkage table and the dictionary.
Claim 4
Dependent Claim 38 words
A machine translation system according to claim 1, wherein in the grammatical analysis step the words identified by the morpheme analysis step are extracted two at a time to be examined in order to determined any modification relationship.

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