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FM
2001
Springer
108views Formal Methods» more  FM 2001»
14 years 2 months ago
Improvements in BDD-Based Reachability Analysis of Timed Automata
To develop efficient algorithms for the reachability analysis of timed automata, a promising approach is to use binary decision diagrams (BDDs) as data structure for the representa...
Dirk Beyer
STOC
1998
ACM
139views Algorithms» more  STOC 1998»
14 years 2 months ago
Analysis of Low Density Codes and Improved Designs Using Irregular Graphs
In [6], Gallager introduces a family of codes based on sparse bipartite graphs, which he calls low-density parity-check codes. He suggests a natural decoding algorithm for these c...
Michael Luby, Michael Mitzenmacher, Mohammad Amin ...
USENIX
2001
13 years 11 months ago
Improving the FreeBSD SMP Implementation
UNIX-derived operating systems have traditionally have a simplistic approach to process synchronization which is unsuited to multiprocessor application. Initial FreeBSD SMP suppor...
Greg Lehey
TCS
1998
13 years 10 months ago
Threshold Dominating Sets and an Improved Characterization of W[2]
The Threshold Dominating Set problem is that of determining for a graph G = (V, E) whether there is a subset V ⊆ V of size k, such that for each vertex v ∈ V there are at leas...
Rodney G. Downey, Michael R. Fellows
WINE
2010
Springer
178views Economy» more  WINE 2010»
13 years 8 months ago
Improved Hardness of Approximation for Stackelberg Shortest-Path Pricing
We consider the Stackelberg shortest-path pricing problem, which is defined as follows. Given a graph G with fixed-cost and pricable edges and two distinct vertices s and t, we may...
Patrick Briest, Parinya Chalermsook, Sanjeev Khann...