公开(公告)号：US07584221B2

公开(公告)日：2009-09-01

申请号：US10804326

申请日：2004-03-18

申请人： Stephen Robertson ,  Hugo Zaragoza ,  Michael Taylor ,  Stefan Isbein Larimore ,  Mihai Petriuc

发明人： Stephen Robertson ,  Hugo Zaragoza ,  Michael Taylor ,  Stefan Isbein Larimore ,  Mihai Petriuc

IPC分类号： G06F12/00 ,  G06F17/30

CPC分类号： G06F17/30722 ,  G06F17/30616 ,  Y10S707/99952

摘要： A field-weighted search combines statistical information for each term across document fields in a suitably weighted fashion. Both field-specific term frequencies and field and document lengths are considered to obtain a field-weighted document weight for each query term. Each field-weighted document weight can then be combined in order to generate a field-weighted document score that is responsive to the overall query.

摘要翻译： 场加权搜索以适当加权的方式将跨文档字段的每个术语的统计信息合并。 考虑到字段特定术语频率和字段和文档长度都可以获得每个查询项的场加权文档权重。 然后可以组合每个场加权文档权重，以便生成响应于整体查询的场加权文档得分。

公开(公告)号：US07630963B2

公开(公告)日：2009-12-08

申请号：US10609933

申请日：2003-06-30

申请人： Stefan Isbein Larimore ,  Tapas Kumar Nayak

发明人： Stefan Isbein Larimore ,  Tapas Kumar Nayak

IPC分类号： G06F17/30

CPC分类号： G06F17/30622 ,  Y10S707/99932 ,  Y10S707/99933 ,  Y10S707/99943

摘要： Special lists can be used to perform fast ranked searching of documents containing key terms. The special lists are distinguished from basic inverted indices because they contain a ranking of only a predetermined number of documents that may be identified in the index. During a search, search engines can utilize the special lists to perform fast ranked searching without having to redundantly search through the entire corpus or index of documents available to the search engine. Rather, the search engine can search only the documents listed in the special list, thereby saving the time and resources required to perform the search. The search engine can also be configured to search a combination of the special lists and the index to provide users selective control over the balance between the accuracy and speed of the search.

摘要翻译： 特殊列表可用于对包含关键术语的文档进行快速排序搜索。 特殊列表与基本的反向索引不同，因为它们只包含可以在索引中标识的预定数量的文档的排名。 在搜索过程中，搜索引擎可以利用特殊列表执行快速排名搜索，而无需冗余地搜索搜索引擎可用的整个语料库或索引。 相反，搜索引擎可以仅搜索特殊列表中列出的文档，从而节省执行搜索所需的时间和资源。 搜索引擎还可以配置为搜索特殊列表和索引的组合，以提供用户选择性地控制搜索的准确性和速度之间的平衡。