Method for generating quantiles from data streams
US6820090B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2002 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | May 17, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99942
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a method for acquiring statistical information from data, an initial cumulative distribution function (CDF) that characterizes an initial set of data is acquired. The acquisition of this CDF comprises acquiring a set of quantile endpoints that define the CDF. At least one additional CDF, which characterizes a further set of data, is also acquired. Information that describes the initial CDF is combined with information that describes one or more additional CDFs, and the result is used to obtain a composite CDF that describes a combined set of data that includes the initial data set and the one or more further data sets. Then, a new set of quantile endpoints is determined, that defines the composite CDF. The sequence of steps described above is repeated at least once more. The previously obtained composite CDF is used as the initial CDF for each repetition of this sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.