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DCC
2006
IEEE
13 years 10 months ago
Faster Algorithm for Designing Optimal Prefix-Free Codes with Unequal Letter Costs
Abstract. We address the problem of designing optimal prefix-free codes over an encoding alphabet with unequal integer letter costs. The most efficient algorithm proposed so far ha...
Sorina Dumitrescu
CHES
2005
Springer
83views Cryptology» more  CHES 2005»
14 years 19 days ago
Fast Truncated Multiplication for Cryptographic Applications
The Truncated Multiplication computes a truncated product, a contiguous subsequence of the digits of the product of 2 integers. A few truncated polynomial multiplication algorithms...
Laszlo Hars
ICALP
2005
Springer
14 years 18 days ago
The Tree Inclusion Problem: In Optimal Space and Faster
Given two rooted, ordered, and labeled trees P and T the tree inclusion problem is to determine if P can be obtained from T by deleting nodes in T. This problem has recently been r...
Philip Bille, Inge Li Gørtz
STOC
2010
ACM
186views Algorithms» more  STOC 2010»
13 years 12 months ago
Faster approximation schemes for fractional multicommodity flow problems via dynamic graph algorithms
We combine the work of Garg and K¨onemann, and Fleischer with ideas from dynamic graph algorithms to obtain faster (1 − ε)-approximation schemes for various versions of the mu...
Aleksander Madry
MOR
2002
94views more  MOR 2002»
13 years 6 months ago
The Complexity of Generic Primal Algorithms for Solving General Integer Programs
ngly better objective function value until an optimal solution is reached. From an abstract point of view, an augmentation problem is solved in each iteration. That is, given a fea...
Andreas S. Schulz, Robert Weismantel