Apparatus and method for generating digest according to hierarchical structure of topic
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United States of America Patent
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Oct 28, 2003
Grant Date -
Dec 5, 2002
app pub date -
Oct 21, 1998
filing date -
Mar 20, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A digest generator apparatus calculates a lexical cohesion degree at each position in a document using a plurality of windows having different sizes, and calculates the candidate section of a topic boundary for each topic level corresponding to the size of a window. Then, by unifying the candidate section of different levels, the digest generator apparatus detects the topic boundary for each level. Then, based on the relation between a summarization-target topic passage and a long topic passage containing the summarization-target topic passage the digest generator apparatus extracts key sentences and generates a digest.
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