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Virgolin, M. (author), Alderliesten, Tanja (author), Bel, Arjan (author), Witteveen, C. (author), Bosman, P.A.N. (author)
The recently introduced Gene-pool Optimal Mixing Evolutionary Algorithm for Genetic Programming (GP-GOMEA) has been shown to find much smaller solutions of equally high quality compared to other state-of-the-art GP approaches. This is an interesting aspect as small solutions better enable human interpretation. In this paper, an adaptation of...
conference paper 2018
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Wilson, M. (author), Klos, T.B. (author), Witteveen, C. (author), Huisman, B. (author)
conference paper 2013
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Novak, P. (author), Witteveen, C. (author)
In [2] we introduced a theoretical framework for modelling scalable information-aggregation systems. The framework is exposed on the background of a description of METIS, a system prototype aiming at supporting maritime safety and security by facilitating continuous monitoring of vessels in national coastal waters. Among the main problems of...
conference paper 2013
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Ter Mors, A.W. (author), Witteveen, C. (author)
In multi-agent routing, there is a set of mobile agents each with a start location and destination location on a shared infrastructure. An agent wants to reach its destination as quickly as possible, but conflicts with other agents must be avoided. We have previously developed a single-agent route planning algorithm that can find a shortest-time...
conference paper 2012
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Wilson, M. (author), Witteveen, C. (author), Huisman, B. (author)
conference paper 2012
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Noroozian, A. (author), De Weerdt, M.M. (author), Witteveen, C. (author)
The fundamental problem with P2P networks is that quality of service depends on altruistic resource sharing by participating peers. Many peers freeride on the generosity of others. Current solutions like sharing ratio enforcement and reputation systems are complex, exploitable, inaccurate or unfair at times. The need to design scalable...
conference paper 2012
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Endhoven, L. (author), Klos, T.B. (author), Witteveen, C. (author)
Multi-agent planning and scheduling concerns finding a joint plan to achieve some set of common goals with several independent agents each aiming to find a plan or schedule for their part of the goals. To avoid conflicts in these individual plans or schedules decoupling is used. Such a decoupling entails adding local constraints for the agents...
conference paper 2011
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Wilson, M. (author), Roos, N. (author), Huisman, B. (author), Witteveen, C. (author)
NedTrain is a Dutch company tasked with performing the maintenance of the rolling stock of the national railway company, NS. NedTrain owns several workshops at different locations. The scheduling in one such workshop will be taken as point of departure for the discussion in this paper. After discussing a suitable representation of the NedTrain...
conference paper 2011
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Santema, S.C. (author), Van de Rijt, J. (author), Witteveen, W. (author)
This paper focuses on the application of BVP methodology in The Netherlands. BVP in the Netherlands is applied in and outside construction (ship building, IT, health care), in the public sector as well as in the private sector and across numerous phases in (different) supply chains. In 2010 BVP is on its way to become a new way of procurement in...
conference paper 2011
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Verwer, S.E. (author), De Weerdt, M.M. (author), Witteveen, C. (author)
We advocate the use of an explicit time representation in syntactic pattern recognition because it can result in more succinct models and easier learning problems. We apply this approach to the real-world problem of learning models for the driving behavior of truck drivers. We discretize the values of onboard sensors into simple events. Instead...
conference paper 2011
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Verwer, S. (author), De Weerdt, M.M. (author), Witteveen, C. (author)
conference paper 2010
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Ter Mors, A.W. (author), Witteveen, C. (author), Zutt, J. (author), Kuipers, F.A. (author)
In context-aware route planning, there is a set of transportation agents each with a start and destination location on a shared infrastructure. Each agent wants to find a shortest-time route plan without colliding with any of the other agents, or ending up in a deadlock situation. We present a single-agent route planning algorithm that is both...
conference paper 2010
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Planken, L.R. (author), De Weerdt, M.M. (author), Witteveen, C. (author)
When agents need to interact in order to solve some (possibly common) problem, resolving potential conflicts beforehand is often preferred to coordination during execution. Agents may lose some flexibility, but their course of action will be more predictable and often also more efficient, obtaining a socially optimal outcome instead of a local...
conference paper 2010
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Wu, M. (author), De Weerdt, M.M. (author), La Poutré, H. (author), Yadati, C. (author), Zhang, Y. (author), Witteveen, C. (author)
conference paper 2009
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Witteveen, J.A.S. (author), Bijl, H. (author)
A robust and efficient uncertainty quantification method is presented for resolving the effect of uncertainty on the behavior of multi-physics systems. The extrema diminishing method in probability space maintains a bounded error due to the interpolation of deterministic samples at constant phase in a transonic airfoil flutter problem.
conference paper 2009
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Witteveen, J.A.S. (author), Bijl, H. (author)
An explicit mesh motion algorithm based on inverse distance weighting interpolation is presented. The explicit formulation leads to a fast mesh motion algorithm and an easy implementation. In addition, the proposed point-by-point method is robust and flexible in case of large deformations, hanging nodes, and parallelization. Mesh quality results...
conference paper 2009
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Witteveen, J.A.S. (author), Bijl, H. (author)
An efficient uncertainty quantification method for unsteady problems is presented in order to achieve a constant accuracy in time for a constant number of samples. The approach is applied to the aeroelastic problems of a transonic airfoil flutter system and the AGARD 445.6 wing benchmark with uncertainties in the flow and the structure.
conference paper 2009
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Witteveen, J.A.S. (author)
A second order front tracking method is developed for solving the Euler equations of inviscid fluid dynamics numerically. Front tracking methods are usually limited to first order accuracy, since they are based on a piecewise constant approximation of the solution. Here the second order convergence is achieved by building a piecewise linear...
conference paper 2009
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Oosterman, J.E.G. (author), Ravenhorst, R. (author), Witteveen, C. (author), Van Leeuwen, P. (author)
At airports, the turnaround process of aircraft is crucial for a timely and efficient handling of air traffic. During this process, a number of services need to be provided during the time the aircraft is at the gate: e.g., de-boarding, cleaning, catering, fuelling, and boarding. These services are provided by different service providers (agents...
conference paper 2008
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Narasimha, C.Y. (author), Witteveen, C. (author), Zhang, Y. (author), Wu, M. (author), La Poutré, H. (author)
conference paper 2008
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