Selectivity estimation of set similarity selection queries
US8161046B2 · kind B2 · utility
1Cited by
0References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2008 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Nov 4, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/24545
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a system and/or methodology for selectivity estimation of set similarity queries. More specifically, the invention relates to a selectivity estimation technique employing hashed sampling. The invention providing for samples constructed a priori that can efficiently and quickly provide accurate estimates for arbitrary queries, and can be updated efficiently as well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.