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System, method and program for information processing

  • US 9,002,811 B2
  • Filed: 11/13/2009
  • Issued: 04/07/2015
  • Est. Priority Date: 11/14/2008
  • Status: Active Grant
First Claim
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1. An information processing system comprising:

  • a hardware processor;

    a first memory storing a plurality of indexes having access control information, the plurality of indexes comprising a first index and a plurality of second indexes corresponding to versions of the first index; and

    a second memory storing instructions,wherein;

    the first index stores, on a per-group basis, a list of one or more documents accessible by each group of a plurality of groups of users, and wherein;

    the hardware processor is configured by the instructions to;

    receive a search query; and

    provide, in response to the search query, a first document from among the list of one or more documents based on the first index.

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