325 search results - page 38 / 65 » Group Nearest Neighbor Queries |
GIS
2005
ACM
14 years 11 months ago
2005
ACM
The R*-tree, as a state-of-the-art spatial index, has already found its way into commercial systems like Oracle. In this paper, we aim at improving query performance of the R*tree...
DMSN
2004
ACM
14 years 3 months ago
2004
ACM
An important type of spatial queries for sensor networks are K Nearest Neighbor (KNN) queries. Currently, research proposals for KNN query processing is based on index structures,...
COMPGEOM
2010
ACM
14 years 2 months ago
2010
ACM
In this paper, we introduce a simple, randomized dynamic data structure for storing multidimensional point sets, called a quadtreap. This data structure is a randomized, balanced ...
SIGMOD
2010
ACM
14 years 2 months ago
2010
ACM
Similarity search methods are widely used as kernels in various data mining and machine learning applications including those in computational biology, web search/clustering. Near...
SISAP
2009
IEEE
14 years 4 months ago
2009
IEEE
—We present an overview of the combinatorial framework for similarity search. An algorithm is combinatorial if only direct comparisons between two pairwise similarity values are ...