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Article
Supporting activity modelling from activity traces
Article first published online: 24 MAR 2011
DOI: 10.1111/j.1468-0394.2011.00584.x
© 2011 Blackwell Publishing Ltd
Additional Information
How to Cite
Georgeon, O. L., Mille, A., Bellet, T., Mathern, B. and Ritter, F. E. (2012), Supporting activity modelling from activity traces. Expert Systems, 29: 261–275. doi: 10.1111/j.1468-0394.2011.00584.x
Publication History
- Issue published online: 4 JUL 2012
- Article first published online: 24 MAR 2011
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Keywords:
- sequence mining;
- timeline analysis;
- activity trace;
- knowledge-based system;
- activity modelling
Abstract
We present a new method and tool for activity modelling through qualitative sequential data analysis. In particular, we address the question of constructing a symbolic abstract representation of an activity from an activity trace. We use knowledge engineering techniques to help the analyst build an ontology of the activity, that is, a set of symbols and hierarchical semantics that supports the construction of activity models. The ontology construction is pragmatic, evolutionist and driven by the analyst in accordance with their modelling goals and their research questions. Our tool helps the analyst define transformation rules to process the raw trace into abstract traces based on the ontology. The analyst visualizes the abstract traces and iteratively tests the ontology, the transformation rules and the visualization format to confirm the models of activity. With this tool and this method, we found innovative ways to represent a car-driving activity at different levels of abstraction from activity traces collected from an instrumented vehicle. As examples, we report two new strategies of lane changing on motorways that we have found and modelled with this approach.