Data processing: database and file management or data structures – Database and file access – Preparing data for information retrieval
Reexamination Certificate
2011-06-07
2011-06-07
Abel-Jalil, Neveen (Department: 2165)
Data processing: database and file management or data structures
Database and file access
Preparing data for information retrieval
Reexamination Certificate
active
07958121
ABSTRACT:
A retrieval information that is a retrieval target, acquired from an information source, is arranged on a vector space. Data of a usage information and a content specifying manners of usage, used by the user in the past is acquired by a usage-information acquisition unit. A user's preference extraction unit extracts a preference of a user from the data, and notifies a number-of-effective-elements reduction unit of the extracted data. The number-of-effective-elements reduction unit evaluates each element of a vector of retrieval information by using the preference of the user, and reduces the number of effective elements by removing the elements smaller than a certain criteria. Thereafter, a statistic is acquired in the vector space of the vector of the retrieval information, and the cosine normalization is performed on the result that includes a large number of elements, and the normalization in which the variation of the statistic was compensated by the average weight is performed on the result that includes a small number of elements.
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Korean Office Action issued on Mar. 17, 2009 in corresponding Korean Patent Application 10-2007-0096088.
Karasudani Akira
Matsuda Takahiro
Abel-Jalil Neveen
Fujitsu Limited
Fujitsu Patent Center
Young Kevin
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