Writer Adaptation for Online Handwriting Recognition
Identifieur interne : 002F19 ( Istex/Curation ); précédent : 002F18; suivant : 002F20Writer Adaptation for Online Handwriting Recognition
Auteurs : Anja Brakensiek [Allemagne] ; Andreas Kosmala [Allemagne] ; Gerhard Rigoll [Allemagne]Source :
- Lecture Notes in Computer Science [ 0302-9743 ] ; 2001.
Abstract
Abstract: In this paper an on-line handwriting recognition system with focus on adaptation techniques is described. Our Hidden Markov Model (HMM) -based recognition system for cursive German script can be adapted to the writing style of a new writer using either a retraining depending on the maximum likelihood (ML)-approach or an adaptation according to the maximum a posteriori (MAP)-criterion. The performance of the resulting writer-dependent system increases significantly, even if only a few words are available for adaptation. So this approach is also applicable for on-line systems in hand-held computers such as PDAs. This paper deals with the performance comparison of two different adaptation techniques either in a supervised or an unsupervised mode with the availability of different amounts of adaptation data ranging from only 6 words up to 100 words per writer.
Url:
DOI: 10.1007/3-540-45404-7_5
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Anja Brakensiek<affiliation><mods:affiliation>Dept. of Computer Science, Faculty of Electrical Engineering, Gerhard-Mercator-University Duisburg, D-47057, Duisburg</mods:affiliation>
<wicri:noCountry code="subField">Duisburg</wicri:noCountry>
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<country wicri:rule="url">Allemagne</country>
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<affiliation><mods:affiliation>Dept. of Computer Science, Faculty of Electrical Engineering, Gerhard-Mercator-University Duisburg, D-47057, Duisburg</mods:affiliation>
<wicri:noCountry code="subField">Duisburg</wicri:noCountry>
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<affiliation wicri:level="1"><mods:affiliation>E-mail: kosmala@fb9-ti.uni-duisburg.de</mods:affiliation>
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<affiliation><mods:affiliation>Dept. of Computer Science, Faculty of Electrical Engineering, Gerhard-Mercator-University Duisburg, D-47057, Duisburg</mods:affiliation>
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<front><div type="abstract" xml:lang="en">Abstract: In this paper an on-line handwriting recognition system with focus on adaptation techniques is described. Our Hidden Markov Model (HMM) -based recognition system for cursive German script can be adapted to the writing style of a new writer using either a retraining depending on the maximum likelihood (ML)-approach or an adaptation according to the maximum a posteriori (MAP)-criterion. The performance of the resulting writer-dependent system increases significantly, even if only a few words are available for adaptation. So this approach is also applicable for on-line systems in hand-held computers such as PDAs. This paper deals with the performance comparison of two different adaptation techniques either in a supervised or an unsupervised mode with the availability of different amounts of adaptation data ranging from only 6 words up to 100 words per writer.</div>
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