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Abstract

The need to model users' dynamic behaviour in Computer Supported Cooperative Work (CSCW) systems arises in many contexts. This study developed a probabilistic model of the usage of an awareness-maintaining mechanism in a collaborative hypertext database system. Longitudinal time series data of user-database interaction were studied. The study found that the recurring patterns in the occurrences of the awareness-seeking event were related to several contextual aspects of the CSCW system studied. The context-behaviour relationship is captured by a Poisson regression model. The analytical method can be applied to the study of situated actions in other CSCW systems.