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My own research interests relates to multi-agent systems, particularly agent-based simulation and modelling norms of behaviour, and data provenance. he has published over 140 papers in these areas.

He was an invited expert to the W3C working group on provenance, which produced a standard specifying how to represent provenance data for exchange online, PROV, including many supporting documents explaining how the provenance data may be accessed and queried, translated to other representations, extended, and so on. The specifications were published as an official W3C recommendation in April 2013. In particular, he was co-editor of a primer on the recommended model for provenance data. This is an accessible starting point for anyone wishing to learn about PROV.