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Bos, A. (author), De Weerdt, M.M. (author), Witteveen, C. (author), Tonino, J.F.M. (author), Valk, J. (author)
conference paper 1999
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De Weerdt, M.M. (author), Bos, A. (author), Tonino, J.F.M. (author), Witteveen, C. (author)
We introduce an algorithm for cooperative planning in multi-agent systems. The algorithm enables the agents to combine (fuse) their plans in order to increase their joint profits. A computational resources and skills framework is developed for representing the planned activities of an agent under time constraints. Using this resource-skill...
conference paper 2000
document
Bos, A. (author), Tonino, J.F.M. (author), De Weerdt, M.M. (author), Witteveen, C. (author)
We introduce a computational framework, consisting of resources, skills, goals and services to represent the plans of individual agents and to develop models and algorithms for cooperation processes between a collection of agents.
conference paper 2000
document
Van der Krogt, R.P.J. (author), Bos, A. (author), De Weerdt, M.M. (author), Witteveen, C. (author)
conference paper 2000
document
De Weerdt, M.M. (author), Bos, A. (author), Tonino, J.F.M. (author), Witteveen, C. (author)
The promise of multi-agent systems is that multiple agents can solve problems more efficiently than single agents can. In this paper we propose a method to implement cooperation between agents in the planning phase, in order to achive more cost-effective solutions than without cooperation. Two results are presented: First of all, we introduce a...
conference paper 2000
document
De Weerdt, M.M. (author), Bos, A. (author), Tonino, J.F.M. (author), Witteveen, C. (author)
The promise of multi-agent systems is that multiple agents can solve problems more efficiently than single agents can. In this paper we propose a method to implement cooperation between agents in the planning phase, in order to achieve more cost-effective solutions than without cooperation. Two results are presented: First of all, we introduce a...
conference paper 2000
document
De Weerdt, M.M. (author), Bos, A. (author), Tonino, J.F.M. (author), Witteveen, C. (author)
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conference paper 2000
document
De Weerdt, M.M. (author), Tonino, J.F.M. (author), Witteveen, C. (author)
In this paper we will use the framework to study cooperative heuristic multi-agent planning. During the construction of their plans, the agents use a heuristic function inspired by the FF planner (l3l). At any time in the process of planning the agents may exchange available resources, or they may request an agent to produce a missing resource....
conference paper 2001
document
De Weerdt, M.M. (author), Witteveen, C. (author)
conference paper 2001
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Van der Krogt, R.P.J. (author), De Weerdt, M.M. (author), Witteveen, C. (author)
We discuss a rigorous unifying framework for both planning and replanning, extending an existing logic-based approach to resource-based planning. The primitive concepts in this Action Resource Framework (ARF) are actions and resources. Actions consume and produce resources. Plans are structures composed of actions, resource facts and an explicit...
conference paper 2003
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Van der Krogt, R.P.J. (author), De Weerdt, M.M. (author), Witteveen, C. (author)
Opportunities arise in planning when changes in the environment make new propositions available to the planner. Replanning methods often focus only on the negative effects that changes in the environment have and therefore do not apply well. This paper introduces a method that is specifically focused on the opportunity problem. This method is...
conference paper 2003
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De Weerdt, M.M. (author), Van der Krogt, R.P.J. (author), Witteveen, C. (author)
We discuss a resource-based planning framework where agents are able to merge plans by exchanging resources. In this framework, plans are specified as structured objects composed of resource consuming and resource producing processes (actions). A plan itself can also be conceived as a process consuming input resources and producing output...
conference paper 2003
document
De Weerdt, M.M. (author), Witteveen, C. (author)
Many different problems are called distributed or multiagent planning problems. Existing approaches each deal with only a subset of these problems. Which properties are essential in determining a solution method for multiagent planning problems? We argue that mainly the facts that communication is limited, agents have private goals, and the...
conference paper 2006
document
Witteveen, C. (author), De Weerdt, M.M. (author)
conference paper 2006
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Verwer, S.E. (author), De Weerdt, M.M. (author), Witteveen, C. (author)
A model for discrete event systems (DES) can be learned from observations. We propose a simple type of timed automaton to model DES where the timing of the events is important. Learning such an automaton is proven to be NP-complete by a reduction from the problem of learning deterministic finite state automata (DFA) without time. Based on this...
conference paper 2006
document
Witteveen, J.A.S. (author), Bijl, H. (author)
A monomial chaos approach is proposed for efficient uncertainty quantification in nonlinear computational problems. Propagating uncertainty through nonlinear equations can still be computationally intensive for existing uncertainty quantification methods. It usually results in a set of nonlinear equations which can be coupled. The proposed...
conference paper 2006
document
Loeven, A. (author), Witteveen, J.A.S. (author), Bijl, H. (author)
In this paper a Two Step approach with Chaos Collocation for efficient uncertainty quantification in computational fluid-structure interactions is followed. In Step I, a Sensitivity Analysis is used to efficiently narrow the problem down from multiple uncertain parameters to one parameter which has the largest influence on the solution. In Step...
conference paper 2006
document
Witteveen, J.A.S. (author), Bijl, H. (author)
A monomial chaos approach is proposed for efficient uncertainty quantification in nonlinear computational problems. Propagating uncertainty through nonlinear equations can still be computationally intensive for existing uncertainty quantification methods. It usually results in a set of nonlinear equations which can be coupled. The proposed...
conference paper 2006
document
Witteveen, J.A.S. (author), Bijl, H. (author)
Inherent physical uncertainties can have a significant influence on computational predictions. It is therefore important to take physical uncertainties into account to obtain more reliable computational predictions. The Galerkin polynomial chaos method is a commonly applied uncertainty quantification method. However, the polynomial chaos...
conference paper 2006
document
Witteveen, J.A.S. (author), Bijl, H. (author)
Inherent physical uncertainties can have a significant influence on computational predictions. It is therefore important to take physical uncertainties into account to obtain more reliable computational predictions. The Galerkin polynomial chaos method is a commonly applied uncertainty quantification method. However, the polynomial chaos...
conference paper 2006
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