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ICASSP
2011
IEEE
14 years 1 months ago
Rank-deficient quadratic-form maximization over M-phase alphabet: Polynomial-complexity solvability and algorithmic developments
The maximization of a positive (semi)definite complex quadratic form over a finite alphabet is NP-hard and achieved through exhaustive search when the form has full rank. Howeve...
Anastasios T. Kyrillidis, George N. Karystinos
SODA
2001
ACM
93views Algorithms» more  SODA 2001»
14 years 11 months ago
Making data structures confluently persistent
We address a longstanding open problem of [11, 10], and present a general transformation that transforms any pointer based data structure to be confluently persistent. Such transf...
Amos Fiat, Haim Kaplan
TCS
2002
14 years 9 months ago
MAX3SAT is exponentially hard to approximate if NP has positive dimension
Under the hypothesis that NP has positive p-dimension, we prove that any approximation algorithm A for MAX3SAT must satisfy at least one of the following:
John M. Hitchcock
EOR
2006
61views more  EOR 2006»
14 years 9 months ago
Workload minimization in re-entrant lines
This paper is concerned with workload minimization in re-entrant lines with exponential service times and preemptive control policies. Using a numerical algorithm called the power...
Ger Koole, Auke Pot
SODA
2001
ACM
110views Algorithms» more  SODA 2001»
14 years 11 months ago
IMproved results for route planning in stochastic transportation
In the bus network problem, the goal is to generate a plan for getting from point X to point Y within a city using buses in the smallest expected time. Because bus arrival times a...
Justin A. Boyan, Michael Mitzenmacher