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EUROCRYPT
2004
Springer
14 years 22 days ago
On the Hardness of Information-Theoretic Multiparty Computation
We revisit the following open problem in information-theoretic cryptography: Does the communication complexity of unconditionally secure computation depend on the computational com...
Yuval Ishai, Eyal Kushilevitz
FOCS
2004
IEEE
13 years 11 months ago
Hardness of Approximating the Shortest Vector Problem in Lattices
Let p > 1 be any fixed real. We show that assuming NP RP, there is no polynomial time algorithm that approximates the Shortest Vector Problem (SVP) in p norm within a constant ...
Subhash Khot
ISAAC
2004
Springer
107views Algorithms» more  ISAAC 2004»
14 years 21 days ago
On the Hardness and Easiness of Random 4-SAT Formulas
Assuming 3-SAT formulas are hard to refute with high probability, Feige showed approximation hardness results, among others for the max bipartite clique. We extend this result in t...
Andreas Goerdt, André Lanka
AI
2006
Springer
13 years 7 months ago
Complexity of constructing solutions in the core based on synergies among coalitions
Coalition formation is a key problem in automated negotiation among self-interested agents, and other multiagent applications. A coalition of agents can sometimes accomplish thing...
Vincent Conitzer, Tuomas Sandholm
SIGECOM
2003
ACM
125views ECommerce» more  SIGECOM 2003»
14 years 17 days ago
Complexity of determining nonemptiness of the core
Coalition formation is a key problem in automated negotiation among self-interested agents, and other multiagent applications. A coalition of agents can sometimes accomplish thing...
Vincent Conitzer, Tuomas Sandholm