Muhammad Afzal Upal

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Domain independent planners can produce better-quality plans through the use of domain-speciic knowledge, typically encoded as search control rules. The planning-by-rewriting approach has been proposed as an alternative technique for improving plan quality. We present a system that automatically learns plan rewriting rules and compare it with a system that(More)
Considerable planning and learning research h a s b e e n devoted to the problem of automatically acquiring search control knowledge to improve planning eciency. However, most speed up learning systems deene planning success rather narrowly, namely as the production of any plan that satisses the goals regardless of the quality of the plan. As planning(More)
Considerable work has been done to automatically learn domain-specific knowledge to improve the performance of domain independent problem solving systems. However, most of this work has focussed on learning search control knowledge-knowledge that can be used by a problem solving system during search to improve its performance. An alternative approach to(More)
Considerable planning and learning research has been devoted to the problem of learning domain specific search control rules to improve planning efficiency. There have also been a few attempts to learn search control rules that improve plan quality but such efforts have been limited to state-space planners. The reason being that most of the newer planning(More)
Unsupervised classiication is the classiication of data into a number of classes in such a way that data in each class are all similar to each other. In the past there have been few if any studies done to compare the performance of diierent unsupervised classiication techniques. In this paper we review Bayesian and neural net approaches to unsupervised(More)
This paper explores the issue of learning operational knowledge to improve quality of the plans produced by a partial order planner by using an interacting planning system PIPP. We assume that PIPP possesses book knowledge about its domain and post-facto knowledge about comparing completed plans with respect to quality and the idea is to transform it into(More)