A Rational Analysis and Computational Cognitive Model of the Scatter/Gather Document Cluster Browser
This chapter presents a rational analysis and computational cognitive model of an interactive document clustering and browsing technique called Scatter/Gather. The approach addresses (a) what environmental problem is solved; (b) why a behavioral strategy is a good solution to the problem; and (c) how that solution is realized by a cognitive mechanism. Scatter/Gather interaction poses rational choice problems that are analogous to the problems addressed by conventional optimal-foraging models for diet selection and patch residence. These conventional foraging models provide a basis for optimization models of Scatter/Gather interaction, and these optimization models are in turn used to shape a production system model called ACT-IF, which uses a spreading activation model of information scent.
Keywords: document clustering, cognitive model, ACT-IF, rational analysis, optimal-foraging, information-foraging, information scent
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