| 摘要 |
<P>PROBLEM TO BE SOLVED: To raise a hit ratio for retrieving documents and enhance usability. Ž<P>SOLUTION: A character recognition section recognizes characters included in an image, and registers the recognition result as data for retrieval. The character recognition section has a character transition probability table for concatenation of two characters, a means for correcting the recognition result by the transition probability, and a means for making the transition probability table learn by taking out a two-characters concatenation combination from a character string for retrieval input by a user. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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