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MFCS
2005
Springer
15 years 2 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
CRYPTO
2011
Springer
195views Cryptology» more  CRYPTO 2011»
13 years 9 months ago
Time-Lock Puzzles in the Random Oracle Model
Abstract. A time-lock puzzle is a mechanism for sending messages “to the future”. The sender publishes a puzzle whose solution is the message to be sent, thus hiding it until e...
Mohammad Mahmoody, Tal Moran, Salil P. Vadhan
ASIACRYPT
2001
Springer
15 years 1 months ago
How to Achieve a McEliece-Based Digital Signature Scheme
Abstract. McEliece is one of the oldest known public key cryptosystems. Though it was less widely studied than RSA, it is remarkable that all known attacks are still exponential. I...
Nicolas Courtois, Matthieu Finiasz, Nicolas Sendri...
WEA
2004
Springer
124views Algorithms» more  WEA 2004»
15 years 2 months ago
Experimental Studies of Symbolic Shortest-Path Algorithms
Abstract. Graphs can be represented symbolically by the Ordered Binary Decision Diagram (OBDD) of their characteristic function. To solve problems in such implicitly given graphs, ...
Daniel Sawitzki
INLG
2004
Springer
15 years 2 months ago
Reining in CCG Chart Realization
Abstract. We present a novel ensemble of six methods for improving the efficiency of chart realization. The methods are couched in the framework of Combinatory Categorial Grammar (...
Michael White