All Outputs (4)

Evaluating hyperheuristics and local search operators for periodic routing problems
Presentation / Conference Contribution
Chen, Y., Mourdjis, P., Polack, F., Cowling, P., & Remde, S. Evaluating hyperheuristics and local search operators for periodic routing problems

Meta-heuristics and hybrid heuristic approaches have been successfully applied to Periodic Vehicle Routing Problems (PVRPs). However, to be competitive, these methods require careful design of specific search strategies for each problem. By contrast,... Read More about Evaluating hyperheuristics and local search operators for periodic routing problems.

Towards efficient loading of change-based models
Presentation / Conference Contribution
Yohannis, A., Rodriguez, H. H., Polack, F., & Kolovos, D. Towards efficient loading of change-based models. Presented at European Conference on Modelling Foundations and Applications (ECMFA 2018), Toulouse, France

This paper proposes and evaluates an efficient approach for loading models stored in a change-based format. The work builds on language-independent change-based persistence (CBP) of models conforming to object-oriented metamodelling architectures suc... Read More about Towards efficient loading of change-based models.

Competition and cooperation in pickup and multiple delivery problems
Presentation / Conference Contribution
Mourdjis, P., Polack, F., Cowling, P., Chen, Y., & Robinson, M. Competition and cooperation in pickup and multiple delivery problems

Logistics is a highly competitive industry; large hauliers use their size to benefit from economies of scale while small logistics companies are often well placed to service local clients. To obtain economies of scale, small hauliers may seek to coop... Read More about Competition and cooperation in pickup and multiple delivery problems.

A tutorial on metamodelling for grammar researchers
Presentation / Conference Contribution
Paige, R. F., Kolovos, D. S., & Polack, F. A. A tutorial on metamodelling for grammar researchers

A metamodel has been defined as: a model of a model; a definition of a language; a description of abstract syntax; and a description of a domain. Because of these varied definitions, it is difficult to explain why metamodels are constructed, what can... Read More about A tutorial on metamodelling for grammar researchers.