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    • 10. 发明授权
    • Text retrieval method and system using signature of nearby words
    • 文本检索方法和使用附近字签名的系统
    • US5542090A
    • 1996-07-30
    • US280963
    • 1994-07-27
    • Richard D. HendersonMichael J. Barbarino
    • Richard D. HendersonMichael J. Barbarino
    • G06F17/30
    • G06F17/30622G06F17/30949Y10S707/99932Y10S707/99936
    • A method for searching a document corpus for query terms includes generating a list of document terms including a term signature for each term based upon characteristics of a number of adjacent terms. The term signatures can be generated by generating a bit vector for each term within a predetermined adjacent number of terms from each document term, such as through application of a hash function. The bit vectors can then be combined to form the term signature. The word signature alternatively can be generated using one or more morphological properties of the terms. The predetermined adjacent number of terms can be the number of search terms minus one, and may precede, follow, or both precede and follow the document term for which the term signature is generated. A search signature is generated for the query terms excluding a reference term, based upon the predetermined characteristics. The term signature of the reference term is compared with the search signature, and an indication is provided when the term signature of the reference term and the search signature match.
    • 用于搜索文档语料库以获取查询词语的方法包括基于多个相邻词语的特征来生成包括每个词语的术语签名的文档术语列表。 术语签名可以通过生成来自每个文档术语的预定相邻数目的术语中的每个项的位向量,例如通过应用散列函数来生成。 然后可以将位向量组合以形成术语签名。 可以使用术语的一个或多个形态属性来生成词签名。 预定相邻数量的项可以是搜索项的数量减1,并且可以在产生术语签名的文档术语之前,之后或之前。 基于预定特征,为排除参考项的查询项生成搜索签名。 将参考项的术语签名与搜索签名进行比较,并且当参考项和搜索签名的术语签名匹配时提供指示。