Dr Nick Hawes

This list is no longer actively maintained, but I will leave it here for reference. For an up to date list, please see my new site at the University of Oxford.

[young_AAMAS15] Jay Young and Nick Hawes. Learning by Observation Using Qualitative Spatial Relations. In Proceedings of the 14th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2015). May 2015. [pdf] [bib]
Abstract. We present an approach to the problem of learning by observation in spatially-situated tasks, whereby an agent learns to imitate the behaviour of an observed expert with no interaction and limited observations. The form of knowledge representation used for these observations is crucial, and we apply Qualitative Spatial-Relational representations to compress continuous, metric state-spaces into symbolic states to maximise the generalisability of learned models and minimise knowledge engineering. Our system self-configures these representations of the world to discover configurations of features most relevant to the task, and thus build good predictive mod- els. We then show how these models can be employed by situated agents to control their behaviour, closing the loop from observation to practical implementation. We evaluate our approach in the simulated RoboCup Soccer domain, and successfully demonstrate how a system using our approach closely mimics the behaviour of both synthetic (AI controlled) soccer players, and also human-controlled players, through observation.
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