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» The Guarding Problem - Complexity and Approximation
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WWW
2009
ACM
16 years 7 months ago
Answering approximate queries over autonomous web databases
To deal with the problem of empty or too little answers returned from a Web database in response to a user query, this paper proposes a novel approach to provide relevant and rank...
Xiangfu Meng, Z. M. Ma, Li Yan
EDBT
2006
ACM
190views Database» more  EDBT 2006»
16 years 6 months ago
Fast Approximate Wavelet Tracking on Streams
Recent years have seen growing interest in effective algorithms for summarizing and querying massive, high-speed data streams. Randomized sketch synopses provide accurate approxima...
Graham Cormode, Minos N. Garofalakis, Dimitris Sac...
ICDE
2009
IEEE
133views Database» more  ICDE 2009»
16 years 1 months ago
STAR: Steiner-Tree Approximation in Relationship Graphs
— Large graphs and networks are abundant in modern information systems: entity-relationship graphs over relational data or Web-extracted entities, biological networks, social onl...
Gjergji Kasneci, Maya Ramanath, Mauro Sozio, Fabia...
SIGCOMM
1999
ACM
15 years 11 months ago
A Simple Approximation to Minimum-Delay Routing
The conventional approach to routing in computer networks consists of using a heuristic to compute a single shortest path from a source to a destination. Single-path routing is ve...
Srinivas Vutukury, J. J. Garcia-Luna-Aceves
SODA
1993
ACM
202views Algorithms» more  SODA 1993»
15 years 8 months ago
Approximate Nearest Neighbor Queries in Fixed Dimensions
Given a set of n points in d-dimensional Euclidean space, S ⊂ Ed , and a query point q ∈ Ed , we wish to determine the nearest neighbor of q, that is, the point of S whose Euc...
Sunil Arya, David M. Mount