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    • 40. 发明授权
    • Range-conditional character string retrieving method and system
    • 范围条件字符串检索方法和系统
    • US5138669A
    • 1992-08-11
    • US724161
    • 1991-07-01
    • Takanori ShimuraHisamitsu KawaguchiKanji KatoAtsushi HatakeyamaMitsuru Akizawa
    • Takanori ShimuraHisamitsu KawaguchiKanji KatoAtsushi HatakeyamaMitsuru Akizawa
    • G06F17/30G06K9/62G06K9/72
    • G06K9/72G06F17/30985G06K9/62G06K2209/01
    • A range-conditional character string retrieving method and system capable of performing retrieval of a numerical value from a character string at an increased speed by shortening the time taken for generation of finite automaton, range condition retrieval for a character string containing admixedly numeric characters and non-numeric characters such as alphabetic letters and highly intelligent retrieval of a numerical value with designation of preceding and succeeding characters. Given range condition is partitioned in accordance with difference in the digit number between upper and lower limit values, whereon retrieval is performed in each of partitioned ranges in parallel. When a finite automaton transits from a predetermined state to at least two state in dependence on the result of collation of a character string subjected to retrieval, conditions for the state transitions are designated in terms of corresponding codes. A numerical value detecting unit for detecting a numerical value of interest from the character string subjected to retrieval is provided in association with a range decision unit for deciding whether the numerical value detected by the numerical value detecting unit falls within a specified range. A character string collating unit for retrieving a specific character string from the string subjected to retrieval is provided in association with a range condition collating unit for detecting a numerical value falling within a specific range from the specific character string.
    • 一种范围条件字符串检索方法和系统,其能够通过缩短生成有限自动机所需的时间,以增加的速度从字符串中检索数值,对于包含混合数字字符的字符串的范围条件检索, - 数字字符,如字母字母,高度智能地检索具有指定前后字符的数值。 给定范围条件根据上限值和下限值之间的数字值的差异进行分区,其中在每个分区范围中并行执行检索。 当有限自动机根据经检索的字符串的排序结果从预定状态转换到至少两个状态时,状态转换的条件根据相应的代码来指定。 与用于判定由数值检测单元检测到的数值是否在规定范围内的范围决定单元相关联地,设置有用于检测经检索的字符串的感兴趣的数值的数值检测单元。 与用于检测落入特定字符串的特定范围内的数值的范围条件对照单元相关联地提供用于从经过检索的字符串中检索特定字符串的字符串对照单元。