Keinosuke Matsumoto

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Retrieval of electronic documents is a fundamental component for intelligent access to the contents of documents. Although the history of its research is long, it is still not a trivial task, in particular, when we retrieve long documents with short queries. For the retrieval of long documents , a method called passage-based document retrieval has proven to(More)
Document image retrieval is a task to retrieve document images relevant to a user's query. Most of existing methods based on word-level indexing rely on the representation called " bag of words " which originated in the field of information retrieval. This paper presents a new representation of documents that utilizes additional information about the(More)