| Presentation | 1999/7/22 A Method of Geographical Name Extraction from Japanese Encyclopedia for Text Search in which the Results are Ordered by Geographical Areas Yasusi Kanada, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A text retrieval method called the thematic mapping search method has been developed for Japanese texts. In this method, the user specifies a search theme using free words, the obtains a sorted list of excerpts and hyperlinks to sentences that contain geographical names. Using this list, the user can open maps that indicate the location of the names. To generate an index of names for this searching, a method of geographical name extraction has been developed. In this method, geographical names are extracted, matched to names in a geographical name database, and identified. Geographical names, however, often have several types of ambiguities. Ambiguities are resolved using context analysis and several other techniques. As a result, the precision of extracted names is more than 96% on average when applied to the World Encyclopaedia. The rules for information extraction depends on features of the Japanese language, but the strategy and most of the techniques can be applied to texts in English or other languages. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Text search / Information retrieval / Information extraction / Name extraction / Name identification / Information organization |
| Paper # | NLC99-7 |
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| Conference Information | |
| Committee | NLC |
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| Conference Date | 1999/7/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| 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 Method of Geographical Name Extraction from Japanese Encyclopedia for Text Search in which the Results are Ordered by Geographical Areas |
| Sub Title (in English) | |
| Keyword(1) | Text search |
| Keyword(2) | Information retrieval |
| Keyword(3) | Information extraction |
| Keyword(4) | Name extraction |
| Keyword(5) | Name identification |
| Keyword(6) | Information organization |
| 1st Author's Name | Yasusi Kanada |
| 1st Author's Affiliation | Central Research Laboratory, Hitachi Ltd.() |
| Date | 1999/7/22 |
| Paper # | NLC99-7 |
| Volume (vol) | vol.99 |
| Number (no) | 227 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |