Sciweavers

210 search results - page 16 / 42
» On the Structure of Bounded Queries to Arbitrary NP Sets
Sort
View
COMPGEOM
2011
ACM
13 years 5 days ago
Three problems about dynamic convex hulls
We present three results related to dynamic convex hulls: • A fully dynamic data structure for maintaining a set of n points in the plane so that we can find the edges of the c...
Timothy M. Chan
ISAAC
2007
Springer
156views Algorithms» more  ISAAC 2007»
14 years 2 months ago
Approximate Range Searching in External Memory
In this paper, we present two linear-size external memory data structures for approximate range searching. Our first structure, the BAR-B-tree, stores a set of N points in Rd and ...
Micha Streppel, Ke Yi
EDBT
2009
ACM
145views Database» more  EDBT 2009»
14 years 14 days ago
An efficient online auditing approach to limit private data disclosure
In a database system, disclosure of confidential private data may occur if users can put together the answers of past queries. Traditional access control mechanisms cannot guard a...
Haibing Lu, Yingjiu Li, Vijayalakshmi Atluri, Jaid...
IGIS
1994
156views GIS» more  IGIS 1994»
14 years 21 days ago
Optimizing Spatial Data Structures For Static Data
During the last decade various spatial data structures have been designed and compared against each other, all of them re ecting a dynamic situation with ongoing object insertion a...
Lukas Bachmann, Bernd-Uwe Pagel, Hans-Werner Six
PODS
1995
ACM
124views Database» more  PODS 1995»
14 years 4 days ago
Window Query-Optimal Clustering of Spatial Objects
During the last decade various spatial data structures have been designed and compared against each other with respect to their performance. Still missing is a lower bound result,...
Bernd-Uwe Pagel, Hans-Werner Six, Mario Winter