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ICASSP
2011
IEEE
12 years 11 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»
13 years 9 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
13 years 7 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»
13 years 7 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»
13 years 9 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