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» A Global Constraint for Total Weighted Completion Time
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IPCO
2004
142views Optimization» more  IPCO 2004»
14 years 7 days ago
The Constrained Minimum Weighted Sum of Job Completion Times Problem
We consider the problem of minimizing the weighted sum of job completion times on a single machine (subject to certain job weights) with an additional side constraint on the weigh...
Asaf Levin, Gerhard J. Woeginger
COCOON
2009
Springer
13 years 8 months ago
An FPTAS for the Minimum Total Weighted Tardiness Problem with a Fixed Number of Distinct Due Dates
Given a sequencing of jobs on a single machine, each one with a weight, processing time, and a due date, the tardiness of a job is the time needed for its completion beyond its du...
George Karakostas, Stavros G. Kolliopoulos, Jing W...
ICALP
2001
Springer
14 years 3 months ago
On the Approximability of Average Completion Time Scheduling under Precedence Constraints
Abstract. We consider the scheduling problem of minimizing the average weighted job completion time on a single machine under precedence constraints. We show that this problem with...
Gerhard J. Woeginger
FLAIRS
2007
14 years 1 months ago
Learning to Identify Global Bottlenecks in Constraint Satisfaction Search
Using information from failures to guide subsequent search is an important technique for solving combinatorial problems in domains such as boolean satisfiability (SAT) and constr...
Diarmuid Grimes, Richard J. Wallace
IPCO
1998
152views Optimization» more  IPCO 1998»
14 years 6 days ago
Approximation Bounds for a General Class of Precedence Constrained Parallel Machine Scheduling Problems
Abstract. A well studied and difficult class of scheduling problems concerns parallel machines and precedence constraints. In order to model more realistic situations, we consider ...
Alix Munier, Maurice Queyranne, Andreas S. Schulz