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A probabilistic mental model for estimating disruption

Published: 08 February 2009 Publication History

Abstract

Adaptive software systems are intended to modify their appearance, performance or functionality to the needs and preferences of different users. A key bottleneck in building effective adaptive systems is accounting for the cost of disruption to a user's mental model of the application caused by the system's adaptive behaviour. In this work, we propose a probabilistic approach to modeling the cost of disruption. This allows an adaptive system to tradeoff disruption cost with expected savings (or other benefits) induced by a potential adaptation in a principled, decision-theoretic fashion. We conducted two experiments with 48 participants to learn model parameters in an adaptive menu selection environment. We demonstrate the utility of our approach in simulation and usability studies. Usability results with 8 participants suggest that our approach is competitive with other adaptive menus w.r.t. task performance, while providing the ability to reduce disruption and adapt to user preferences.

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      cover image ACM Conferences
      IUI '09: Proceedings of the 14th international conference on Intelligent user interfaces
      February 2009
      522 pages
      ISBN:9781605581682
      DOI:10.1145/1502650
      Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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      Published: 08 February 2009

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      Author Tags

      1. decision-theoretic systems
      2. disruption
      3. probabilistic mental model
      4. user modeling

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      IUI09: 14th International Conference on Intelligent User Interfaces
      February 8 - 11, 2009
      Florida, Sanibel Island, USA

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