Logo des Repositoriums

Auflistung nach Autor:in "Weibelzahl, Stephan"

1 - 7 von 7
  • Konferenzbeitrag
    A Database of Empirical Evaluations of Adaptive Systems
    (9. GI-Workshop "Adaptivität und Benutzermodellierung in interaktiven Softwaresystemen", 2001) Weibelzahl, Stephan; Weber, Gerhard
    The development of an online database for studies of empirical evaluations of adaptive systems (EASy-D) is proposed. Such a database will serve as reference for researchers in the field of adaptive systems and as guide for planning new evaluations. It aims at encouraging more evaluations that fulfill certain methodological requirements. The structure of the database records is discussed and the functionality of the web interface is described.
  • Konferenzbeitrag
    Adaptation to Motivational States in Educational Systems
    (13. GI-Workshop "Adapitivität und Benutzermodellierung in interaktiven Softwaresystemen", 2005) Weibelzahl, Stephan; Kelly, Declan
    Most current Adaptive Educational Systems model cognitive characteristics of students such as learning goals, knowledge and preferences. However, motivation obviously plays a key role in education. This paper reviews the state-of-the- art regarding adaptation to motivation. Open research issues that need to be addressed are identified.
  • Konferenzbeitrag
    Evaluating the Usability of Adaptive Recommendations
    (16th Workshop on Adaptivity and User Modeling in Interactive Systems, 2008) Weibelzahl, Stephan; Chihaia, Diana
    In the design, development and evaluation of adaptive systems, usability aspects are largely ignored so far. A correct but badly designed adaptation decision might spoil the purpose. This paper provides an example of a usability evaluation with an adaptive collaborative system. The results suggest that the representation format of recommendations did not strongly affect standard usability measures. However, comparing different design versions helped users to identify strengths and weaknesses.
  • Konferenzbeitrag
    Improving Structural Salience by Content Adaptation with Summaries
    (10. GI-Workshop "Adaptivität und Benutzermodellierung in interaktiven Softwaresystemen", 2002) Lippitsch, Stefan; Weibelzahl, Stephan; Weber, Gerhard
    Users have a better chance to comprehend a text the better its coherence and structural salience is. Presentation adaptation will be used to attain more support for link structure comprehension. We plan to examine the effectivity and efficiency of the user’s domain knowledge acquisiton. Therefore, assessment of both, internal (percent correct answers at tests) and external data (external tests, user satisfaction and goal attainment) is considered.
  • Konferenzbeitrag
    Is it worthwhile to model users of a Tool in Support of SE Technology Selection?
    (2012) Jedlitschka, Andreas; Weibelzahl, Stephan; Ayari, Brahim
  • Konferenzbeitrag
    Personalized Advice and Feedback for Diabetes Patients
    (Mensch und Computer 2015 – Workshopband, 2015) Weibelzahl, Stephan; Herder, Eelco; Rokicki, Markus; Heckmann, Dominikus; Müssig, Karsten; Schildt, Janko
  • Konferenzbeitrag
    Supporting the Authoring of Adaptive Hypermedia with Structural Information
    (10. GI-Workshop "Adaptivität und Benutzermodellierung in interaktiven Softwaresystemen", 2002) Weibelzahl, Stephan; Lippitsch, Stefan; Weber, Gerhard
    Authoring adaptive hypermedia requires skills that go beyond pure text editing, because relations between concepts have to be specified among other knowledge engineering activities. A recent approach to support authors is to compute several structural measures of the domain model to estimate its adaptivity degree. However, our empirical results of eight different courses and more than 1300 users suggest that subjective adaptivity success and structural adaptivity degree are not related. We argue, that the adaptivity degree is an inherent property of the content and does not imply adaptation quality.