Enhanced query performance using fixed length hashing of multidimensional data
US8239392B2 · kind B2 · utility
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21Claims
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Key dates
| Filing date | Sep 26, 2011 |
| Grant date | Aug 7, 2012 |
| Priority date | — |
| Expiry date | Sep 26, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/2255
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods, systems and apparatus, including computer program products, for enhancing query performance through fixed length hashing of multidimensional data. According to one method, a fixed length hash of a multidimensional data record is created where the hash has respective fixed length sections for each data dimension of the record being hashed. The composite fixed length hash is stored with a reference to the original data record to which it corresponds. Query parameters are hashed and compared to a corresponding section of the fixed length hash to determine a set of candidate records.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.