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DISOPT
2008
85views more  DISOPT 2008»
13 years 8 months ago
How tight is the corner relaxation?
Given a mixed-integer linear programming (MILP) model and an optimal basis of the associated linear programming relaxation, the Gomory's corner relaxation is obtained by drop...
Matteo Fischetti, Michele Monaci
IPM
2008
113views more  IPM 2008»
13 years 8 months ago
Lexical cohesion and term proximity in document ranking
We demonstrate effective new methods of document ranking based on lexical cohesive relationships between query terms. The proposed methods rely solely on the lexical relationships...
Olga Vechtomova, Murat Karamuftuoglu
IS
2008
13 years 8 months ago
From conceptual models to schemata: An object-process-based data warehouse construction method
Data warehouse modeling is a complex task, which involves knowledge of business processes of the domain of discourse, understanding the structural and behavioral system's con...
Dov Dori, Roman Feldman, Arnon Sturm
CPHYSICS
2007
113views more  CPHYSICS 2007»
13 years 8 months ago
Atomic-level simulation of non-equilibrium surface chemical reactions under plasma-wall interaction
Molecular dynamics (MD) simulations are used for the study of non-thermal-equilibrium reactions that take place on the substrate surface during plasma etching processes. In MD sim...
Satoshi Hamaguchi, Masashi Yamashiro, Hideaki Yama...
DMTCS
2007
73views Mathematics» more  DMTCS 2007»
13 years 8 months ago
"Trivializing" Generalizations of some Izergin-Korepin-type Determinants
We generalize (and hence trivialize and routinize) numerous explicit evaluations of determinants and pfaffians due to Kuperberg, as well as a determinant of Tsuchiya. The level of ...
Tewodros Amdeberhan, Doron Zeilberger