325 search results - page 16 / 65 » Group Nearest Neighbor Queries |
GIS
2009
ACM
14 years 4 months ago
2009
ACM
In this paper, we formalize the novel concept of Constrained Reverse k-Nearest Neighbor (CRkNN) search on mobile objects (clients) performed at a central server. The CRkNN query c...
ESORICS
2009
Springer
14 years 4 months ago
2009
Springer
For nearest neighbor search, a user queries a server for nearby points of interest (POIs) with his/her location information. Our aim is to protect the user’s sensitive informatio...
FOCS
2006
IEEE
14 years 4 months ago
2006
IEEE
We present an algorithm for the c-approximate nearest neighbor problem in a d-dimensional Euclidean space, achieving query time of O(dn1/c2 +o(1) ) and space O(dn + n1+1/c2 +o(1) ...
SUTC
2006
IEEE
14 years 3 months ago
2006
IEEE
Given a query point p, typically the position of a current client, and two datasets S and R, a transitive nearest neighbor (TNN) search returns a pair of objects (s, r) ∈ S × R...
CCCG
2008
13 years 11 months ago
2008
We present the first spatially adaptive data structure that answers approximate nearest neighbor (ANN) queries to points that reside in a geometric space of any constant dimension...