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Auflistung nach Autor:in "Schreiber, Daniel"

1 - 4 von 4
  • Konferenzbeitrag
    Adding Flexible Input Device Support to a Web Browser with MundoMonkey
    (17th Workshop on Adaptivity and User Modeling in Interactive Systems, 2009) Schreiber, Daniel
    Computer applications are increasingly used in non-desktop settings, e.g. at a public kiosk systems or on mobile phones. Thanks to the widespread availability of web browsers for different platforms, web interfaces are often employed in these settings. However, current browsers lack sufficient support for flexibly adapting to non-desktop settings, e.g. ad-hoc changes of input devices. A use case for this is, e.g., an interactive shopping window that presents a web interface for buying products. If the browser in the shopping window supported ad-hoc changes of input devices, the customer could dynamically attach carried input devices, e.g., a mobile phone, to the browser and interact with it. In this paper, we present a solution to the problem of dynamically connecting input devices in a non-desktop setting to a browser, based on the MundoMonkey Firefox extension for interactive spaces. Using our approach, the unmodified web user interface can be used with arbitrary in- put devices in ways that cannot be realized by synthesizing mouse and keyboard events. In our approach, the customization to the device at hand is performed transparently to the application developer by the end-user.
  • Konferenzbeitrag
    Pen-and-Paper Interaction for Everyday Tasks
    (Interaktive Kulturen : Workshop-Band : Proceedings der Workshops der Mensch & Computer 2010 - 10. Fachübergreifende Konferenz für Interaktive und Kooperative Medien, DeLFI 2010 - die 8. E-Learning Fachtagung Informatik der Gesellschaft für Informatik e.V. und der Entertainment Interfaces 2010, 2010) Heinrichs, Felix; Schreiber, Daniel; Mühlhäuser, Max
    Pen-and-Paper interaction (PPI) has recently gained attention as a form of tangible interaction, where normal paper is used in combination with a digtial pen to allow interaction with computer systems. However, research regarding the application domains of PPI has yet been focussed on knowledge work, despite the highly mobile and casual nature of paper. We argue, that the overlooked domain of mundane or everyday tasks requires additional attention and adds special requirements to supporting technologies and infrastructures. This is grounded on a case study in the domain of shopping planning support
  • Konferenzbeitrag
    Prediction Algorithms for User Actions
    (15th Workshop on Adaptivity and User Modeling in Interactive Systems, 2007) Hartmann, Melanie; Schreiber, Daniel
    Proactive User Interfaces (PUIs) aim at facilitating the interaction with a user interface, e.g., by highlighting fields or adapting the interface. For that purpose, they need to be able to predict the next user action from the interaction history. In this paper, we give an overview of sequence prediction algorithms (SPAs) that are applied in this domain, and build upon them to develop two new algorithms that base on combining different order Markov models. We identify the special requirements that PUIs pose on these algorithms, and evaluate the performance of the SPAs in this regard. For that purpose, we use three datasets with real usage-data and synthesize further data with specific characteristics. Our relatively simple yet efficient algorithm FxL performs extremely well in the domain of SPAs which make it a prime candidate for integration in a PUI. To facilitate further research in this field, we provide a Perl library that contains all presented algorithms and tools for the evaluation.
  • Konferenzbeitrag
    Social IPTV: a Survey on Chances and User-Acceptance
    (18th Intl. Workshop on Personalization and Recommendation on the Web and Beyond, 2010) Schreiber, Daniel; Abboud, Osama; Kovacevic, Sandra; Hoefer, Andreas; Strufe, Thorsten
    Incorporating Social Networking and IPTV, the two arguably fastest growing and most accepted services on the Internet today, yields strong synergies. However, it opens a very complex design space of feature combinations. Selecting features, aiming at achieving the best user acceptance, hence, is a difficult, yet vital task for the development of an integrated service. This pa- per presents the results of an initial user study conducted to gain a better understanding of the complex design space. It identifies classes of demanded, promising features and indicates that social features in IPTV services in general will be well accepted, even if they are quite immersive to the TV experience. The study was con- ducted with user groups from central Europe as well as with a group from Korea.