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2007
Springer
14 years 9 months ago
Hybrid heuristics for the probabilistic maximal covering location-allocation problem
The Maximal Covering Location Problem (MCLP) maximizes the population that has a facility within a maximum travel distance or time. Numerous extensions have been proposed to enhan...
Francisco de Assis Corrêa, Antonio Augusto C...
108
Voted
STOC
2009
ACM
163views Algorithms» more  STOC 2009»
15 years 10 months ago
Non-monotone submodular maximization under matroid and knapsack constraints
Submodular function maximization is a central problem in combinatorial optimization, generalizing many important problems including Max Cut in directed/undirected graphs and in hy...
Jon Lee, Vahab S. Mirrokni, Viswanath Nagarajan, M...
67
Voted
IAT
2008
IEEE
15 years 4 months ago
Competency-Based Intelligent Curriculum Sequencing: Comparing Two Evolutionary Approaches
The process of creating e-learning contents using reusable learning objects (LOs) can be broken down in two sub-processes: LOs finding and LO sequencing. Although semiautomatic to...
Luis de Marcos, Roberto Barchino, José-Javi...
ACMICEC
2006
ACM
89views ECommerce» more  ACMICEC 2006»
15 years 4 months ago
A semantic web approach to handling soft constraints in virtual organisations
In this paper we present a proposal for representing soft constraint satisfaction problems (CSPs) within the Semantic Web architecture. The proposal is motivated by the need for a...
Alun D. Preece, Stuart Chalmers, Craig McKenzie, J...
85
Voted
CONSTRAINTS
2002
111views more  CONSTRAINTS 2002»
14 years 10 months ago
A Constraint-Based Interactive Train Rescheduling Tool
In this paper, we report the design and implementation of a constraint-based interactive train rescheduling tool, a project in collaboration with the International Institute for So...
C. K. Chiu, C. M. Chou, Jimmy Ho-Man Lee, Ho-fung ...