发明名称 |
Efficient storage and retrieval of posting lists |
摘要 |
A role tree having nodes corresponding to semantic roles in a hierarchy is defined. A posting list is generated for each association of a term and a semantic role in the hierarchy. The posting lists are stored contiguously on a physical storage medium such that a subtree of the hierarchy of semantic roles can be loaded from the storage medium as a single contiguous block. The posting lists for a subtree of the hierarchy are retrieved by obtaining data identifying the beginning location on the physical storage medium of the posting lists for the term at the top of a desired subtree of the hierarchy and data identifying the length of the posting lists of the desired subtree of the hierarchy. A single contiguous block that includes the posting lists for the desired subtree of the hierarchy is then retrieved from the beginning location through the specified length.
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申请公布号 |
US8229970(B2) |
申请公布日期 |
2012.07.24 |
申请号 |
US20080201079 |
申请日期 |
2008.08.29 |
申请人 |
WALTERS CHAD;THIONE GIOVANNI LORENZO;PELL BARNEY;BIEWALD LUKAS;O'CONNOR BRENDAN;MICROSOFT CORPORATION |
发明人 |
WALTERS CHAD;THIONE GIOVANNI LORENZO;PELL BARNEY;BIEWALD LUKAS;O'CONNOR BRENDAN |
分类号 |
G06F17/30 |
主分类号 |
G06F17/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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