Exponential noise distribution to optimize database privacy and output utility
US7562071B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Dec 2, 2005 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Feb 18, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99934
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An amount of noise to add to a query output may be selected to preserve privacy of inputs while maximizing utility of the released output. Noise values can be distributed according to a substantially symmetric exponential density function (“exponential distribution”). That is, the most likely noise value can be zero, and noise values of increasing absolute value can decrease in probability according to the exponential function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.