Mathijs de Weerdt

Dr. Mathijs de Weerdt

Delft University of Technology
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Research Focus & Metrics

Academic Career Length

25Years (2002-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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10 December 2009 in Multiagent and Grid Systems
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Mathijs de WeerdtMathijs de Weerdt
Mathijs de Weerdt
BCBrad Clement
Brad Clement
In most multiagent systems planning on forehand can help to seriously improve the efficiency of executing actions. The main difference between centrally creating a plan and constructing a plan for a system of agents lies in the fact that in the latte

24 December 2015 in IEEE Transactions on Intelligent Transportation Systems
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Mathijs de WeerdtMathijs de Weerdt
Mathijs de Weerdt
SSSebastian Stein
Sebastian Stein
Enrico GerdingEnrico Gerding
Enrico Gerding
Valentin RobuValentin Robu
Valentin Robu
NJNicholas R. Jennings
Nicholas R. Jennings
This paper introduces a novel intention-aware routing system (IARS) for electric vehicles. This system enables vehicles to compute a routing policy that minimizes their expected journey time while considering the policies, or intentions, of other vehicles. Considering such intentions is critical for electric vehicles, which may need to recharge en route and face potentially significant queueing times if other vehicles choose the same charging stations. To address this, the computed routing policy takes into consideration predicted queueing times at the stations, which are derived from the current intentions of other electric vehicles. The efficacy of IARS is demonstrated through simulations using realistic settings based on real data from The Netherlands, including charging station locations, road networks, historical travel times, and journey origin-destination pairs. In these settings, IARS is compared with a number of state-of-the-art benchmark routing algorithms and achieves significantly lower average journey times. In some cases, IARS leads to an over 80% improvement in waiting times at charging stations and a more than 50% reduction in overall journey times.

20 December 2019 in Journal of Intelligent Manufacturing
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Lei HeLei He
Lei He
Mathijs de WeerdtMathijs de Weerdt
Mathijs de Weerdt
Neil Yorke-SmithNeil Yorke-Smith
Neil Yorke-Smith
In intelligent manufacturing, it is important to schedule orders from customers efficiently. Make-to-order companies may have to reject or postpone orders when the production capacity does not meet the demand. Many such real-world scheduling problems are characterised by processing times being dependent on the start time (time dependency) or on the preceding orders (sequence dependency), and typically have an earliest and latest possible start time. We introduce and analyze four algorithmic ideas for this class of time/sequence-dependent over-subscribed scheduling problems with time windows: a novel hybridization of adaptive large neighbourhood search (ALNS) and tabu search (TS), a new randomization strategy for neighbourhood operators, a partial sequence dominance heuristic, and a fast insertion strategy. Through factor analysis, we demonstrate the performance of these new algorithmic features on problem domains with varying properties. Evaluation of the resulting general purpose algorithm on three domains—an order acceptance and scheduling problem, a real-world multi-orbit agile Earth observation satellite scheduling problem, and a time-dependent orienteering problem with time windows—shows that our hybrid algorithm robustly outperforms general algorithms including a mixed integer programming method, a constraint programming method, recent state-of-the-art problem-dependent meta-heuristic methods, and a two-stage hybridization of ALNS and TS.

26 February 2011 in Autonomous Agents and Multi-Agent Systems
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Mathijs de WeerdtMathijs de Weerdt
Mathijs de Weerdt
YZYingqian Zhang
Yingqian Zhang
TKTomas Klos
Tomas Klos
This paper proposes a new variant of the task allocation problem, where the agents are connected in a social network and tasks arrive at the agents distributed over the network. We show that the complexity of this problem remains NP-complete. Moreover, it is not approximable within some factor. In contrast to this, we develop an efficient greedy algorithm for this problem. Our algorithm is completely distributed, and it assumes that agents have only local knowledge about tasks and resources. We conduct a broad set of experiments to evaluate the performance and scalability of the proposed algorithm in terms of solution quality and computation time. Three different types of networks, namely small-world, random and scale-free networks, are used to represent various social relationships among agents in realistic applications. The results demonstrate that our algorithm works well and also that it scales well to large-scale applications. In addition we consider the same problem in a setting where the agents holding the resources are self-interested. For this, we show how the optimal algorithm can be used to incentivize these agents to be truthful. However, the efficient greedy algorithm cannot be used in a truthful mechanism, therefore an alternative, cluster-based algorithm is proposed and evaluated.

1 February 2010 in Transportation Research Part C: Emerging Technologies
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TMTamás Máhr
Tamás Máhr
JSJordan Srour
Jordan Srour
Mathijs de WeerdtMathijs de Weerdt
Mathijs de Weerdt
RZR.A. Zuidwijk
R.A. Zuidwijk

31 December 2002 in Artificial Intelligence
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HTHans Tonino
Hans Tonino
ABAndré Bos
André Bos
Mathijs de WeerdtMathijs de Weerdt
Mathijs de Weerdt
CWCees Witteveen
Cees Witteveen