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16 results

Simulating Dynamic Vehicle Routing Problems with Athos

Conference Proceeding
Hoffman, B., Guckert, M., Chalmers, K., & Urquhart, N. (2019)
Simulating Dynamic Vehicle Routing Problems with Athos. In Proceedings of the 33rd International ECMS Conference on Modelling and Simulation ECMS 2019, (296-302). https://doi.org/10.7148/2019-0296
Complex routing problems, such as vehicle routing problems with additional constraints, are both hard to solve and hard to express in a form that is accessible to the human ex...

Athos - A Model Driven Approach to Describe and Solve Optimisation Problems

Conference Proceeding
Hoffman, B., Chalmers, K., Urquhart, N., & Guckert, M. (2019)
Athos - A Model Driven Approach to Describe and Solve Optimisation Problems. https://doi.org/10.1145/3300111.3300114
Implementing solutions for optimisation problems with general purpose high-level programming languages is a time consuming task that can only be carried out by professional so...

A new rich vehicle routing problem model and benchmark resource

Conference Proceeding
Sim, K., Hart, E., Urquhart, N. B., & Pigden, T. (2018)
A new rich vehicle routing problem model and benchmark resource. In Advances in Evolutionary and Deterministic Methods for Design, Optimization and Control in Engineering and Scienceshttps://doi.org/10.1007/978-3-319-89988-6_30
We describe a new rich VRP model that captures many real-world constraints, following a recently proposed taxonomy that addresses both scenario and problem physical characteri...

Towards reducing complexity of multi-agent simulations by applying model-driven techniques

Conference Proceeding
Hoffman, B., Chalmers, K., Urquhart, N., Farrenkopf, T., & Guckert, M. (2018)
Towards reducing complexity of multi-agent simulations by applying model-driven techniques. In Y. Demazeau, B. An, J. Bajo, & A. Fern√°ndez-Caballero (Eds.), Advances in Practical Applications of Agents, Multi-Agent Systems, and Complexity: The PAAMS Collection. PAAMS 2018, 187-199. https://doi.org/10.1007/978-3-319-94580-4_15
Creating multi-agent simulations is a challenging task often requiring programming skills at the professional software developer level. Model driven methods of software develo...

A Domain-Specific Language For Routing Problems

Conference Proceeding
Hoffmann, B., Hoffman, B., Guckert, M., Farrenkopf, T., Chalmers, K., & Urquhart, N. (2018)
A Domain-Specific Language For Routing Problems. In L. Nolle, A. Burger, C. Tholen, J. Werner, & J. Wellhausen (Eds.), Proceedings of the 32nd EUROPEAN CONFERENCE ON MODELLING AND SIMULATIONhttps://doi.org/10.7148/2018-0262
Vehicle Routing Problems (VRPs) are commonly used as benchmark optimisation problems and they also have many applications in industry. Using agent-based approaches to solve VR...

Demo paper: AGADE - Scalability of ontology based agent simulations

Conference Proceeding
Farrenkopf, T., Guckert, M., Urquhart, N. B., & Wells, S. (2016)
Demo paper: AGADE - Scalability of ontology based agent simulations. In Advances in Practical Applications of Scalable Multi-agent Systems. The PAAMS Collection, 256-259. https://doi.org/10.1007/978-3-319-39324-7_25
Simulations of real world scenarios often require considerably large numbers of agents. With increasing level of detail and resolution in the underlying models machine limitat...

Multi-Modal employee routing with time windows in an urban environment.

Conference Proceeding
Urquhart, N. B., Hart, E., & Judson, A. (2015)
Multi-Modal employee routing with time windows in an urban environment. In Proceedings of the 2015 Genetic and Evolutionary Algorithms Conference, (1503-1504). https://doi.org/10.1145/2739482.2764649
An urban environment provides a number of challenges and opportunities for organisations faced with the task of scheduling a mobile workforce. Given a mixed set of public and ...

AGADE how individual guidance leads to group behaviour and how this can be simulated

Conference Proceeding
Farrenkopf, T., Guckert, M., Hoffmann, B., & Urquhart, N. B. (2014)
AGADE how individual guidance leads to group behaviour and how this can be simulated. In J. Muller, M. Weyrich, & A. Bazzan (Eds.), Multiagent System Technologies, (234-250). https://doi.org/10.1007/978-3-319-11584-9_16
In this paper we will demonstrate how BDI agents can be used to model individuals as participants in social structures where they act as potential buyers in a simple mobile ph...

A real-world employee scheduling and routing application.

Conference Proceeding
Hart, E., Sim, K., & Urquhart, N. B. (2014)
A real-world employee scheduling and routing application. In C. Igel (Ed.), GECCO 2014 Proceedings of the Companion Publication of the 2014 Annual Conference on Genetic and Evolutionary Computation, (1239-1242). https://doi.org/10.1145/2598394.2605447
We describe a hyper-heuristic application developed for a client to find quick, acceptable solutions to Workforce Schedul- ing and Routing problems. An interactive fitness fun...

Techniques for Auditing the ICT Carbon Footprint of an Organisation

Journal Article
Mouchet, C., Urquhart, N., & Kemmer, R. (2014)
Techniques for Auditing the ICT Carbon Footprint of an Organisation. International Journal of Green Computing, 5(1), 44-61. https://doi.org/10.4018/ijgc.2014010104
This article has presents an extensive survey of the state of the art in Green IT/S. The findings of the survey suggest that there is scope for a reliable carbon footprint aud...