Query-aware sampling of data streams
US8108394B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2009 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Dec 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L43/022
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system, method and computer-readable medium provide for assigning sampling methods to each input stream for arbitrary query sets in a data stream management system. The method embodiment comprises splitting all query nodes in a query directed acyclic graph (DAG) having multiple parent nodes into sets of independent nodes having a single parent, computing a grouping set for every node in each set of independent nodes, reconciling each parent node with each child node in each set of independent node, reconciling between multiple child nodes that share a parent node and generating a final grouping set for at least one node describing how to sample an input stream for that node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.