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VLDB
2002
ACM
106views Database» more  VLDB 2002»
14 years 9 months ago
Approximate Frequency Counts over Data Streams
We present algorithms for computing frequency counts exceeding a user-specified threshold over data streams. Our algorithms are simple and have provably small memory footprints. A...
Gurmeet Singh Manku, Rajeev Motwani
MTA
2010
108views more  MTA 2010»
14 years 8 months ago
A reduced-reference structural similarity approximation for videos corrupted by channel errors
Abstract In this paper we propose a reduced-reference quality assessment algorithm which computes an approximation of the Structural SIMilarity (SSIM) metrics exploiting coding too...
Marco Tagliasacchi, Giuseppe Valenzise, Matteo Nac...
FOCS
2010
IEEE
14 years 7 months ago
Minimum-Cost Network Design with (Dis)economies of Scale
Given a network, a set of demands and a cost function f(
Matthew Andrews, Spyridon Antonakopoulos, Lisa Zha...
SMC
2010
IEEE
158views Control Systems» more  SMC 2010»
14 years 7 months ago
A study of genetic algorithms for approximating the longest path in generic graphs
Abstract--Finding the longest simple path in a generic undirected graph is a challenging issue that belongs to the NPComplete class of problems. Four approaches based on genetic al...
David Portugal, Carlos Henggeler Antunes, Rui Roch...
CORR
2010
Springer
142views Education» more  CORR 2010»
14 years 8 months ago
HyperANF: Approximating the Neighbourhood Function of Very Large Graphs on a Budget
The neighbourhood function NG(t) of a graph G gives, for each t ∈ N, the number of pairs of nodes x, y such that y is reachable from x in less that t hops. The neighbourhood fun...
Paolo Boldi, Marco Rosa, Sebastiano Vigna