Stratified sampling using adaptive parallel data processing
US9697274B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2013 |
| Grant date | Jul 4, 2017 |
| Priority date | — |
| Expiry date | Jul 31, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/9535
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Stratified sampling of a plurality of records is performed. A plurality of records are partitioned into a plurality of splits, wherein each split includes at least a portion of the plurality of records. The split of the plurality of splits is provided to a mapper. The mapper assigns at least a portion the records of the at least one split to a group based on a strata of the assigned records, and filters the records of the group based on a comparison of the weights of the records to a local threshold of the mapper. The mapper updates the local threshold of the mapper by communicating with a coordinator. The mapper shuffles the group to a reducer, where the reducer filters the records of the group based on the weights of the records. The reducer provides a stratified sampling of the plurality of records based on the group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.