2468 search results - page 31 / 494 » Aggregation operators 2003 |
SBBD
2007
13 years 10 months ago
2007
The optimization of similarity queries using metric access methods has been widely discussed in the last decades. Similarity queries consider one object as the query center, and re...
DOLAP
2003
ACM
14 years 1 months ago
2003
ACM
The data cube operator exemplifies two of the most important aspects of OLAP queries: aggregation and dimension hierarchies. In earlier work we presented Dwarf, a highly compress...
SENSYS
2003
ACM
14 years 1 months ago
2003
ACM
Simple in-network data aggregation (or fusion) techniques for sensor networks have been the focus of several recent research efforts, but they are insufficient to support advance...
IJCAI
2003
13 years 10 months ago
2003
We present a coherent framework for data clustering. Starting with a Hopfield network, we show the solutions for several well-motivated clustering objective functions are principa...
WMCSA
2002
IEEE
14 years 1 months ago
2002
IEEE
Many “ubiquitous computing” applications need a constant flow of information about their environment to be able to adapt to their changing context. To support these “contex...