Probabilistic Automaton Model for Fuzzy English-Text Retrieval
Identifieur interne : 001E26 ( Main/Merge ); précédent : 001E25; suivant : 001E27Probabilistic Automaton Model for Fuzzy English-Text Retrieval
Auteurs : Manabu Ohta [Japon] ; Atsuhiro Takasu [Japon] ; Jun Adachi [Japon]Source :
- Lecture Notes in Computer Science [ 0302-9743 ] ; 2000.
Abstract
Abstract: Optical character reader (OCR) misrecognition is a serious problem when searching against OCR-scanned documents in databases such as digital libraries. This paper proposes fuzzy retrieval methods for English text that contains errors in the recognized text without cor- recting the errors manually. Costs are thereby reduced. The proposed methods generate multiple search terms for each input query term based on probabilistic automata reflecting both error-occurrence probabilities and character-connection probabilities. Experimental results of test-set retrieval indicate that one of the proposed methods improves the recall rate from 95.56% to 97.88% at the cost of a decrease in precision rate from 100.00% to 95.52% with 20 expanded search terms.
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DOI: 10.1007/3-540-45268-0_4
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