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COCO
2010
Springer
168views Algorithms» more  COCO 2010»
15 years 27 days ago
A New Sampling Protocol and Applications to Basing Cryptographic Primitives on the Hardness of NP
We investigate the question of what languages can be decided efficiently with the help of a recursive collisionfinding oracle. Such an oracle can be used to break collisionresistan...
Iftach Haitner, Mohammad Mahmoody, David Xiao
STOC
1997
ACM
91views Algorithms» more  STOC 1997»
15 years 4 months ago
Lower Bounds for Distributed Coin-Flipping and Randomized Consensus
We examine a class of collective coin- ipping games that arises from randomized distributed algorithms with halting failures. In these games, a sequence of local coin ips is gener...
James Aspnes
ENTCS
2008
102views more  ENTCS 2008»
14 years 12 months ago
Soft Linear Logic and Polynomial Complexity Classes
We describe some results inspired to Lafont's Soft Linear Logic (SLL) which is a subsystem of second-order linear logic with restricted rules for exponentials, correct and co...
Marco Gaboardi, Jean-Yves Marion, Simona Ronchi De...
CIVR
2006
Springer
172views Image Analysis» more  CIVR 2006»
15 years 3 months ago
Retrieving Shapes Efficiently by a Qualitative Shape Descriptor: The Scope Histogram
Abstract. Efficient image retrieval from large image databases is a challenging problem. In this paper we present a method offering constant time complexity for the comparison of t...
Arne Schuldt, Björn Gottfried, Otthein Herzog
MFCS
2005
Springer
15 years 5 months ago
Coloring Sparse Random k-Colorable Graphs in Polynomial Expected Time
Abstract. Feige and Kilian [5] showed that finding reasonable approximative solutions to the coloring problem on graphs is hard. This motivates the quest for algorithms that eithe...
Julia Böttcher