Sciweavers

18306 search results - page 39 / 3662
» Algorithmics in Exponential Time
Sort
View
STOC
2005
ACM
146views Algorithms» more  STOC 2005»
14 years 9 months ago
Approximation algorithms for combinatorial auctions with complement-free bidders
We exhibit three approximation algorithms for the allocation problem in combinatorial auctions with complement free bidders. The running time of these algorithms is polynomial in ...
Shahar Dobzinski, Noam Nisan, Michael Schapira
ATVA
2006
Springer
106views Hardware» more  ATVA 2006»
14 years 21 days ago
Efficient Algorithms for Alternating Pushdown Systems with an Application to the Computation of Certificate Chains
Motivated by recent applications of pushdown systems to computer security problems, we present an efficient algorithm for the reachability problem of alternating pushdown systems. ...
Dejvuth Suwimonteerabuth, Stefan Schwoon, Javier E...
ACSD
2007
IEEE
93views Hardware» more  ACSD 2007»
13 years 10 months ago
SAT-based Unbounded Model Checking of Timed Automata
We present an improvement of the SAT-based Unbounded Model Checking (UMC) algorithm. UMC, a symbolic approach introduced in [7], uses propositional formulas in conjunctive normal ...
Wojciech Penczek, Maciej Szreter
JC
2008
77views more  JC 2008»
13 years 9 months ago
A numerical algorithm for zero counting, I: Complexity and accuracy
We describe an algorithm to count the number of distinct real zeros of a polynomial (square) system f. The algorithm performs O(log(nD(f))) iterations (grid refinements) where n is...
Felipe Cucker, Teresa Krick, Gregorio Malajovich, ...
ARITH
2003
IEEE
14 years 2 months ago
High-Radix Iterative Algorithm for Powering Computation
A high-radix composite algorithm for the computation of the powering function (¤¦¥ ) is presented in this paper. The algorithm consists of a sequence of overlapped operations: ...
José-Alejandro Piñeiro, Milos D. Erc...