Results 261 to 270 of about 1,573,513 (300)

Integration of Constraint Programming and Metaheuristics

2007
Our research is focused on developing hybrid solvers for Combinatorial Optimization Problems. We are concerned with the design of hybrid resolution approaches including Constraint Programming and Metaheuristics. We have been working on that area during the last years, exploring the different issues involved in algorithm design, implementation, tuning ...
Broderick Crawford, Carlos Castro 0001, Éric Monfroy   +2 more
openaire   +1 more source

Integrating ACO and Constraint Propagation

2004
Ant Colony Optimisation algorithms perform competitively with other meta-heuristics for many types of optimisation problems, but unfortunately their performance does not always degrade gracefully when the problem contains hard constraints. Many industrially relevant problems, such as fleet routing, rostering and timetabling, are typically subject to ...
Bernd Meyer 0001, Andreas T. Ernst
openaire   +1 more source

The integrity rules and constraints of database

Proceedings of 2011 International Conference on Electronic & Mechanical Engineering and Information Technology, 2011
Database is a warehouse for storing data. The integrity of database is an important measure to guarantee the uniqueness, consistency and accuracy of the data. It is a issue that must be well researched in the development of database application system.
openaire   +2 more sources

Transactions and integrity constraints

Proceedings of the fourth ACM SIGACT-SIGMOD symposium on Principles of database systems, 1985
Serge Abiteboul, Victor Vianu
openaire   +2 more sources

Integrating Constraints in Schematics of Systems

2015
In computer science, a constraint represents a restriction related to some element (e.g., a UML class), where it is usually specified by a Boolean expression. Several languages have been developed for constraint specification at the requirements level; still, problems exist, such as the introduction of new notions applied specifically to constraints ...
openaire   +1 more source

Integrity Constraints in Federated Databases

1997
This paper considers integrity issues that arise because of the relative autonomous nature of sites in a federated database. Such autonomy requires guarantees from the provider of a service and enforcement of such guarantees. Guarantees are expressed as integrity constraints.
openaire   +2 more sources

Analytical J-Integral Model for Mode-I Cracks in Ductile Materials With Three-Dimensional Constraints

Engineering Fracture Mechanics, 2021
Li-Xun Cai
exaly  

Integral Barrier Lyapunov Functions-Based Integrated Guidance and Control Design for Strap-Down Missile With Field-of-View Constraint

Transactions of the Institute of Measurement and Control, 2021
Jianguo Guo, Zhenxin Feng, Bin Zhao
exaly  

Integrity Constraints I

2003
C.J. Date, Hugh Darwen, Nikos A. Lorentzos   +2 more
openaire   +1 more source

A Finite Element Method for an Elliptic Optimal Control Problem With Integral State Constraints

Applied Numerical Mathematics, 2021
Kamana Porwal, Pratibha Shakya
exaly