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» Approximating Extended Answer Sets
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SSDBM
2000
IEEE
128views Database» more  SSDBM 2000»
15 years 2 months ago
Supporting Content-Based Searches on Time Series via Approximation
Fast retrieval of time series in terms of their contents is important in many application domains. This paper studies database techniques supporting fast searches for time series ...
Changzhou Wang, Xiaoyang Sean Wang
ICALP
1998
Springer
15 years 1 months ago
Efficient Approximation Algorithms for the Subset-Sums Equality Problem
We investigate the problem of finding two nonempty disjoint subsets of a set of n positive integers, with the objective that the sums of the numbers in the two subsets be as close ...
Cristina Bazgan, Miklos Santha, Zsolt Tuza
ALGORITHMICA
2005
110views more  ALGORITHMICA 2005»
14 years 9 months ago
Geographic Quorum System Approximations
Quorum systems are a mechanism for obtaining fault-tolerance and efficient distributed systems. We consider geographic quorum systems; a geographic quorum system is a partition of...
Paz Carmi, Shlomi Dolev, Sariel Har-Peled, Matthew...
CIAC
2006
Springer
111views Algorithms» more  CIAC 2006»
15 years 1 months ago
Fixed-Parameter Tractability Results for Feedback Set Problems in Tournaments
Complementing recent progress on classical complexity and polynomial-time approximability of feedback set problems in (bipartite) tournaments, we extend and partially improve fixed...
Michael Dom, Jiong Guo, Falk Hüffner, Rolf Ni...
ICDE
2010
IEEE
262views Database» more  ICDE 2010»
15 years 9 months ago
Approximate String Search in Spatial Databases
Abstract-- This work presents a novel index structure, MHRtree, for efficiently answering approximate string match queries in large spatial databases. The MHR-tree is based on the ...
Bin Yao, Feifei Li, Marios Hadjieleftheriou, Kun H...