PASCAL - Pattern Analysis, Statistical Modelling and Computational Learning

Learning Potential-based Policies from Constrained Motion
Matthew Howard, Stefan Klanke, Michael Gienger, Christian Görick and Sethu Vijayakumar
In: Humanoids 2008, Daejon, Korea(2008).

Abstract

We present a method for learning potential-based policies from constrained motion data. In contrast to previous approaches to direct policy learning, our method can combine observations from a variety of contexts where different constraints are in force, to learn the underlying unconstrained policy in form of its potential function. This allows us to generalise and predict behaviour where novel constraints apply. As a key ingredient, we first create multiple simple local models of the potential, and align those using an efficient algorithm. We can then detect and discard unsuitable subsets of the data and learn a global model from a cleanly pre-processed training set. We demonstrate our approach on systems of varying complexity, including kinematic data from the ASIMO humanoid robot with 22 degrees of freedom.

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EPrint Type:Conference or Workshop Item (Paper)
Project Keyword:Project Keyword UNSPECIFIED
Subjects:Learning/Statistics & Optimisation
Theory & Algorithms
ID Code:4644
Deposited By:Stefan Klanke
Deposited On:13 March 2009