| Presentation | 1997/5/15 Pruning Algorithms for HMM On-line Handwriting Recognition R. Kohle, T. Matsumoto, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In large vocabulary handwriting recognition, the score evaluation of possible candidates is a considerable computational effort. In order to make handwriting recognition more feasible for practical applications, to simplify evaluation and to be able to apply discriminative training methods, we discuss various search-and pruning techniques to improve recognition speed. Based on the Viterbi algorithm, we propose a simple look-ahead pruning strategy for a sequential search and compare it with the commonly used parallel beam search. Even though the speed gain is only modest compared to the beam search, it does not affect accuracy and its simplicity is appealing. Furthermore we present a preclassification scheme, based on the stroke count, to exclude unlikely candidates from the search. Compared with a naive sequential Viterbi search, the discussed algorithms offer a significant speed improvement with none or only small degradation in accuracy. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | On-line handwriting recognition / Viterbi algorithm / Preclassification |
| Paper # | PRMU97-5 |
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| Conference Information | |
| Committee | PRMU |
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| Conference Date | 1997/5/15(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Paper Information | |
| Registration To | Pattern Recognition and Media Understanding (PRMU) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Pruning Algorithms for HMM On-line Handwriting Recognition |
| Sub Title (in English) | |
| Keyword(1) | On-line handwriting recognition |
| Keyword(2) | Viterbi algorithm |
| Keyword(3) | Preclassification |
| 1st Author's Name | R. Kohle |
| 1st Author's Affiliation | Department of Electrical, Electronics and Computer Engineering Waseda University() |
| 2nd Author's Name | T. Matsumoto |
| 2nd Author's Affiliation | Department of Electrical, Electronics and Computer Engineering Waseda University |
| Date | 1997/5/15 |
| Paper # | PRMU97-5 |
| Volume (vol) | vol.97 |
| Number (no) | 40 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |