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STOC
1994
ACM
95views Algorithms» more  STOC 1994»
13 years 10 months ago
Improved non-approximability results
We indicate strong non-approximability factors for central problems: N1/4 for Max Clique; N1/10 for Chromatic Number; and 66/65 for Max 3SAT. Underlying the Max Clique result is a...
Mihir Bellare, Madhu Sudan
STOC
1994
ACM
97views Algorithms» more  STOC 1994»
13 years 11 months ago
An O(log k) approximation algorithm for the k minimum spanning tree problem in the plane
Givenn points in the Euclideanplane,we considerthe problemof findingthe minimumtree spanninganyk points.The problemis NP-hardand we givean O(logk)-approximationalgorithm. Key Words...
Naveen Garg, Dorit S. Hochbaum
STOC
1994
ACM
123views Algorithms» more  STOC 1994»
13 years 11 months ago
Natural proofs
Razborov and Rudich have shown that so-called natural proofs are not useful for separating P from NP unless hard pseudorandomnumber generators do not exist. This famous result is ...
Alexander A. Razborov, Steven Rudich
STOC
1994
ACM
134views Algorithms» more  STOC 1994»
13 years 11 months ago
A coding theorem for distributed computation
Shannon's Coding Theorem shows that in order to reliably transmit a message of T bits over a noisy communication channel, only a constant slowdown factor is necessary in the ...
Sridhar Rajagopalan, Leonard J. Schulman
STOC
1994
ACM
168views Algorithms» more  STOC 1994»
13 years 11 months ago
Fast algorithms for finding randomized strategies in game trees
Interactions among agents can be conveniently described by game trees. In order to analyze a game, it is important to derive optimal (or equilibrium) strategies for the di erent p...
Daphne Koller, Nimrod Megiddo, Bernhard von Stenge...
STOC
1994
ACM
88views Algorithms» more  STOC 1994»
13 years 11 months ago
Faster shortest-path algorithms for planar graphs
Philip N. Klein, Satish Rao, Monika Rauch Henzinge...
STOC
1994
ACM
108views Algorithms» more  STOC 1994»
13 years 11 months ago
Pseudorandomness for network algorithms
We define pseudorandom generators for Yao's twoparty communication complexity model and exhibit a simple construction, based on expanders, for it. We then use a recursive com...
Russell Impagliazzo, Noam Nisan, Avi Wigderson
STOC
1994
ACM
93views Algorithms» more  STOC 1994»
13 years 11 months ago
Scalable expanders: exploiting hierarchical random wiring
Recent work has shown many advantages to randomly wired expander-based networks. Unfortunately, the wiring complexity of such networks becomes physically problematic as they becom...
Eric A. Brewer, Frederic T. Chong, Tom Leighton