| Presentation | 1995/5/12 A new dependency analysis method based on semantically embedded sentence structures and its performance on Japanese subordinate clauses Satoshi Shirai, Satoru Ikehara, Akio Yokoo, Junko Kimura, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The ambiguity in dependency analysis of Japanese predicates has been one of the major causes of the failure of long sentence analyses. To overcome this problem, a new dependency analysis method for Japanese subordinate clauses based on semantically embedded structure has been proposed and its accuracy has been evaluated. In this paper, the tree levels of hierarchical subordinate clauses proposed by the Japanese philologist F. Minami, are reviewed for their syntax and semantics, and broken down into 13 basic categories and 4 detailed categories. A hierarchical ordering of these categories yields the dependency relations between predicates. Experiments are conducted with some 972 newspaper articles sentences (totaling 2,327 predicates of which 661 are classified as having ambiguous dependency). Where as the conventional method leaves 356 predicates of ambiguous dependency, this number is reduced to 54 predicates by the new method. Accordingly, the accuracy of the first candidate of the dependency relations within a sentence is improved from 92% to 98%. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | dependency analysis / syntactic analysis / Japanese analysis / subordinate clause / semantically embedded structure |
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| Conference Information | |
| Committee | NLC |
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| Conference Date | 1995/5/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Natural Language Understanding and Models of Communication (NLC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A new dependency analysis method based on semantically embedded sentence structures and its performance on Japanese subordinate clauses |
| Sub Title (in English) | |
| Keyword(1) | dependency analysis |
| Keyword(2) | syntactic analysis |
| Keyword(3) | Japanese analysis |
| Keyword(4) | subordinate clause |
| Keyword(5) | semantically embedded structure |
| 1st Author's Name | Satoshi Shirai |
| 1st Author's Affiliation | NTT Communication Science Laboratories() |
| 2nd Author's Name | Satoru Ikehara |
| 2nd Author's Affiliation | NTT Communication Science Laboratories |
| 3rd Author's Name | Akio Yokoo |
| 3rd Author's Affiliation | NTT Communication Science Laboratories |
| 4th Author's Name | Junko Kimura |
| 4th Author's Affiliation | NTT Advanced Technology Corporation |
| Date | 1995/5/12 |
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| Volume (vol) | vol.95 |
| Number (no) | 29 |
| Page | pp.pp.- |
| #Pages | 8 |
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