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    • 7. 发明授权
    • Information retrieval method, information retrieval apparatus, and computer product
    • 信息检索方法,信息检索装置和计算机产品
    • US08131721B2
    • 2012-03-06
    • US12418886
    • 2009-04-06
    • Masahiro KataokaHiroyuki ToriiMasahiro KurishimaHideo Kasai
    • Masahiro KataokaHiroyuki ToriiMasahiro KurishimaHideo Kasai
    • G06F7/00G06F17/30
    • G06F17/30985G06F17/30911H03M7/30Y10S707/99942
    • An information retrieval apparatus includes an acquiring unit that acquires a numerical value defining a boundary of a numerical range; a detecting unit that detects a number of places in and a head numeral of the numerical value; an extracting unit that extracts from a bit string group, a bit string indicating whether a numerical value in a numerical value group having the number of places and the head numeral is present in files subject to retrieval; a specifying unit that specifies a file corresponding to a bit in the extracted bit string, the bit indicating the presence of a numerical value of the numerical value group; a determining unit that determines whether a numerical value in the specified file meets the boundary condition; and a designating unit that, based on a determination by the determining unit designates the specified file to have a numerical value within the numerical range.
    • 信息检索装置包括获取单元,获取定义数值范围的边界的数值; 检测单元,其检测数字的位置和数字的头数字; 提取单元,从位串组提取表示具有位数的数值组中的数值和头数的位串是否存在于被检索的文件中; 指定单元,其指定与提取的比特串中的比特相对应的文件,表示数值组的数值的存在的比特; 确定单元,确定所述指定文件中的数值是否满足所述边界条件; 以及指定单元,其基于所述确定单元的确定指定所述指定文件以具有所述数值范围内的数值。