| Presentation | 2007/7/17 On perceptual grouping of reference expressions Philipp SPANGER, Takenobu TOKUNAGA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Understanding of reference expressions is critical in human-agent interaction through natural language. This paper extends and generalizes an existing formal model of reference expressions involving perceptual grouping, to take account of the wide variety of human-produced reference expressions. The previous model can only represent a linear process of narrowing down of the referent; e.g.: "the right ball of the three balls in the left". While psychological experiments indicate a general tendency towards humans using expressions of this type, it is far from the only or even always the most natural one. In particular, our model can account for non-linear expressions (relations of sets of objects, other than exclusively the subsumption-relation) that are used by humans, like: "the ball in front of the desk and behind the chair". We conducted an experiment to collect data of reference expressions in English in order to evaluate the proposed model. Our proposed model yielded an increase in both coverage and accuracy of referent identification. An algorithm is then outlined for the application of this model to other languages. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | reference expressions / perceptual grouping / language-independent systems |
| Paper # | NLC2007-11 |
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| Conference Information | |
| Committee | NLC |
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| Conference Date | 2007/7/17(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 | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | On perceptual grouping of reference expressions |
| Sub Title (in English) | |
| Keyword(1) | reference expressions |
| Keyword(2) | perceptual grouping |
| Keyword(3) | language-independent systems |
| 1st Author's Name | Philipp SPANGER |
| 1st Author's Affiliation | Department of Computer Science, Tokyo Institute of Technology() |
| 2nd Author's Name | Takenobu TOKUNAGA |
| 2nd Author's Affiliation | Department of Computer Science, Tokyo Institute of Technology |
| Date | 2007/7/17 |
| Paper # | NLC2007-11 |
| Volume (vol) | vol.107 |
| Number (no) | 158 |
| Page | pp.pp.- |
| #Pages | 6 |
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