Document Retrieval In OCR-Scanned Text
نویسنده
چکیده
The use of a document retrieval system (PADRE) for the Fujitsu AP1000 in processing known-item search queries over OCR-scanned documents is reported. Retrieval performance of an initial set of queries is shown to deteriorate signi cantly over scanned data with a character error rate of 5%. A preprocessor is used to augment queries with terms which can be derived from original terms using characteristic substitutions observed to occur in a sample of the scanned text. This technique is shown to markedly improve performance over the degraded data.
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