The externalisation of user models may allow users to understand how a user-adapted Web application makes its adaptation decisions, enabling them to inspect and modify the values stored in their user model. When externalising a user model both the underlying representation of the user model and the visualization used to present it have to be taken into account. In this paper we present a study aimed at evaluating different ways to represent and visualize user models. We use a social recommender system in a cultural events domain (iCITY) as case study. To our purposes, we conducted two experiments: i) a large between-subjects on-line evaluation aimed at confronting different representation and visualization modalities; ii) a within-subjects experiment aimed at confronting the same experimental condition.

An Experiment to Evaluate how to Better Present User Models to the Users

VERNERO, FABIANA;GENA, Cristina
2009

Abstract

The externalisation of user models may allow users to understand how a user-adapted Web application makes its adaptation decisions, enabling them to inspect and modify the values stored in their user model. When externalising a user model both the underlying representation of the user model and the visualization used to present it have to be taken into account. In this paper we present a study aimed at evaluating different ways to represent and visualize user models. We use a social recommender system in a cultural events domain (iCITY) as case study. To our purposes, we conducted two experiments: i) a large between-subjects on-line evaluation aimed at confronting different representation and visualization modalities; ii) a within-subjects experiment aimed at confronting the same experimental condition.
Sixth Workshop on User-Centred Design and Evaluation of Adaptive Systems, held in conjunction with the International Conference on User Modeling, Adaptation, and Personalization (UMAP2009)
Trento, Italy
June 26th, 2009
462
21
33
http://ceur-ws.org/Vol-462/
rating scale; evaluation
Fabiana Vernero; Alessandra Petromilli; Federica Cena; Cristina Gena
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2318/89977
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