Sciweavers

3341 search results - page 95 / 669
» On Bounded Queries and Approximation
Sort
View
ESA
1999
Springer
110views Algorithms» more  ESA 1999»
15 years 2 months ago
Geometric Searching over the Rationals
We revisit classical geometric search problems under the assumption of rational coordinates. Our main result is a tight bound for point separation, ie, to determine whether n given...
Bernard Chazelle
TC
2008
14 years 9 months ago
Localized Broadcasting with Guaranteed Delivery and Bounded Transmission Redundancy
The common belief is that localized broadcast algorithms are not able to guarantee both full delivery and a good bound on the number of transmissions. In this paper, we propose the...
Majid Khabbazian, Vijay K. Bhargava
ISAAC
2004
Springer
121views Algorithms» more  ISAAC 2004»
15 years 3 months ago
Approximate Distance Oracles for Graphs with Dense Clusters
Let G be a graph containing N disjoint t-spanners that are inter-connected with M edges. We present an algorithm that constructs a data structure of size O(M2 + n log n) that answ...
Mattias Andersson, Joachim Gudmundsson, Christos L...
SIGMOD
1999
ACM
181views Database» more  SIGMOD 1999»
15 years 2 months ago
Approximate Computation of Multidimensional Aggregates of Sparse Data Using Wavelets
Computing multidimensional aggregates in high dimensions is a performance bottleneck for many OLAP applications. Obtaining the exact answer to an aggregation query can be prohibit...
Jeffrey Scott Vitter, Min Wang
EDBT
2006
ACM
145views Database» more  EDBT 2006»
15 years 10 months ago
Indexing Spatially Sensitive Distance Measures Using Multi-resolution Lower Bounds
Abstract. Comparison of images requires a distance metric that is sensitive to the spatial location of objects and features. Such sensitive distance measures can, however, be compu...
Vebjorn Ljosa, Arnab Bhattacharya, Ambuj K. Singh