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    • 4. 发明授权
    • Method and apparatus for extracting information from a database
    • 从数据库提取信息的方法和装置
    • US08244741B2
    • 2012-08-14
    • US12504695
    • 2009-07-17
    • Hakan Wolge
    • Hakan Wolge
    • G06F17/00
    • G06F17/3048G06F17/30457
    • A method for retrieving calculation results, wherein a first input or selection causes a first calculation on a database to produce an intermediate result, and a second selection or input causes a second calculation on the intermediate result, producing a final result. These results are cached with digital fingerprint identifiers. A first identifier is calculated from the first selection, and a second identifier is calculated from the second selection and the intermediate result. The first identifier and intermediate result are associated and cached, while the second identifier and final result are associated and cached. The final result may be then retrieved using the first and second selections or inputs by recalculating the first identifier and searching the cache for the first identifier associated with the intermediate result. Upon locating the intermediate result, the second identifier may be recalculated to locate the cached second identifier associated with the final result.
    • 一种用于检索计算结果的方法,其中第一输入或选择引起数据库上的第一次计算以产生中间结果,并且第二选择或输入对中间结果进行第二次计算,产生最终结果。 这些结果用数字指纹识别符进行缓存。 从第一选择计算第一标识符,并且从第二选择和中间结果计算第二标识符。 第一个标识符和中间结果相关联并缓存,而第二个标识符和最终结果被关联和缓存。 然后可以使用第一和第二选择或输入来检索最终结果,通过重新计算第一标识符并搜索高速缓存与中间结果相关联的第一标识符。 在定位中间结果时,可以重新计算第二标识符以定位与最终结果相关联的缓存的第二标识符。
    • 5. 发明申请
    • Method and Apparatus for Extracting Information From a Database
    • 从数据库提取信息的方法和装置
    • US20100017436A1
    • 2010-01-21
    • US12504695
    • 2009-07-17
    • Hakan WOLGE
    • Hakan WOLGE
    • G06F17/30
    • G06F17/3048G06F17/30457
    • Information is extracted from a database using a computer-implemented method that involves a sequential chain of main calculations, in which a first main calculation (P1) operates a first selection item (S1) on a data set (R0) that represents the database to produce a first result (R1), and a second main calculation (P2) operates a second selection item (S2) on the first result (R1) to produce a second result (R2). The first and second results (R1, R2) are cached in computer memory (10) for re-use in subsequent iterations of the method, thereby reducing the need to execute the first and/or second main calculations (P1, P2) for extracting the information. The caching involves calculating a first selection identifier value (ID1) as a function of at least the first selection item (S1), and a second selection identifier value (ID3) as a function of at least the second selection item (S2) and the first result (R1), and storing the first selection identifier value (ID1) and the first result (R1), and the second selection identifier value (ID3) and the second result (R2), respectively, as associated objects in a data structure (12). Each of the identifier values are generated as a statistically unique digital fingerprint by a hash function (f). The re-use involves calculating the first and second selection identifier values (ID1, ID3) during a subsequent iteration and accessing the data structure (12) to potentially retrieve the first and/or second result (R1, R2).
    • 使用涉及主计算的顺序链的计算机实现的方法从数据库中提取信息,其中第一主计算(P1)在表示数据库的数据集(R0)上操作第一选择项(S1) 产生第一结果(R1),并且第二主计算(P2)对第一结果(R1)操作第二选择项目(S2)以产生第二结果(R2)。 第一和第二结果(R1,R2)被缓存在计算机存储器(10)中,以在该方法的后续迭代中重新使用,从而减少执行用于提取的第一和/或第二主计算(P1,P2)的需要 信息。 缓存涉及根据至少第一选择项目(S1)计算第一选择标识符值(ID1),以及作为至少第二选择项目(S2)的函数的第二选择标识符值(ID3)和 第一结果(R1),并分别存储第一选择标识符值(ID1)和第一结果(R1)和第二选择标识符值(ID3)和第二结果(R2)作为数据结构中的关联对象 (12)。 通过散列函数(f)将每个标识符值生成为统计唯一的数字指纹。 重用涉及在后续迭代期间计算第一和第二选择标识符值(ID1,ID3)并访问数据结构(12)以潜在地检索第一和/或第二结果(R1,R2)。