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AAAI
2004
13 years 9 months ago
Study of Lower Bound Functions for MAX-2-SAT
Recently, several lower bound functions are proposed for solving the MAX-2-SAT problem optimally in a branch-and-bound algorithm. These lower bounds improve significantly the perf...
Haiou Shen, Hantao Zhang
AAAI
2010
13 years 9 months ago
A Restriction of Extended Resolution for Clause Learning SAT Solvers
Modern complete SAT solvers almost uniformly implement variations of the clause learning framework introduced by Grasp and Chaff. The success of these solvers has been theoretical...
Gilles Audemard, George Katsirelos, Laurent Simon
AAAI
2000
13 years 9 months ago
Depth-First Branch-and-Bound versus Local Search: A Case Study
Depth-first branch-and-bound (DFBnB) is a complete algorithm that is typically used to find optimal solutions of difficult combinatorial optimization problems. It can also be adap...
Weixiong Zhang
ICNP
2009
IEEE
14 years 2 months ago
oCast: Optimal Multicast Routing Protocol for Wireless Sensor Networks
—In this paper, we describe oCast, an energy-optimal multicast routing protocol for wireless sensor networks. The general minimum-energy multicast problem is NP-hard. Intermitten...
Lu Su, Bolin Ding, Yong Yang, Tarek F. Abdelzaher,...
INFOCOM
2009
IEEE
14 years 2 months ago
Optimal Fast Hashing
Abstract—This paper is about designing optimal highthroughput hashing schemes that minimize the total number of memory accesses needed to build and access an hash table. Recent s...
Josef Kanizo, David Hay, Isaac Keslassy