Publication statistics
Pub. period:2003-2010
Pub. count:12
Number of co-authors:12
Co-authors
Number of publications with 3 favourite co-authors:
Elisabeth Andre:9Nikolaus Bee:3Birgit Endrass:2 Productive colleagues
Matthias Rehm's 3 most productive colleagues in number of publications:
Elisabeth Andre:59Toyoaki Nishida:14Yukiko I. Nakano:11 
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Matthias Rehm
Publications by Matthias Rehm (bibliography)
Leichtenstern, Karin, Andre, Elisabeth and Rehm, Matthias (2010): Using the hybrid simulation for early user evaluations of pervasive interactions. In: Proceedings of the Sixth Nordic Conference on Human-Computer Interaction 2010. pp. 315-324.
To reach a good user-friendliness, knowledge about user requirements is crucial in the development process of a product. The sooner the knowledge is achieved via user evaluations, the more money and time can be saved. In this paper we investigate an approach called hybrid simulation for the early stages evaluation of mobile applications where real mobile phones are used as interaction devices to a virtualised simulation of a pervasive environment. On the first sight, the method is cheap, easy and quick to use as well as more realistic compared to a virtual simulation only approach. In order to receive a more detailed insight in potential benefits and problems of the method, we performed a user study and compared results of a traditional laboratory study with the results of a study performed with the hybrid simulation.
© All rights reserved Leichtenstern et al. and/or their publisher
Rehm, Matthias, Andre, Elisabeth, Nakano, Yukiko and Nishida, Toyoaki (2008): Enculturating conversational interfaces by socio-cultural aspects of communication. In: Proceedings of the 2008 International Conference on Intelligent User Interfaces 2008. p. 435.
The workshop is centered around three main research challenges: 1.) Computationally viable models of cultural aspects of conversations: Cultural norms and values penetrate all our communications and interactions by giving us heuristics how to behave and how to interpret the verbal and nonverbal behavior of others. To make such a notion like culture available for computation, we need a very specific theory of culture that takes its effects on communication and interaction into account.2.) Reliable empirical data on cultural/cross-cultural interaction: To realize technical systems that take cultural influences on behavior into account, precise data analysis on how this influence manifests itself is necessary. In the literature, this information is often given in very general forms without to the precise data on which the observations are based.3.) Enculturating conversational interfaces: Having identified cultural influences on verbal/nonverbal communicative behaviors, it remains to be shown how this can be applied to the development of human-computer interfaces, for instance in an interface reflecting cultural norms and values of communication.
© All rights reserved Rehm et al. and/or ACM Press
Rehm, Matthias (2008): "She is just stupid" -- Analyzing user-agent interactions in emotional game situations. In Interacting with Computers, 20 (3) pp. 311-325.
A multiplayer dice game was realized which is played by two users and one embodied conversational agent. During the game, the players have to lie to each other to win the game and the longer the game commences the more probable it is that someone is lying, which creates highly emotional situations. We ran a number of evaluation studies with the system. The specific setting allows us to compare user-user interactions directly with user-agent interactions in the same game. So far, the users' gaze behavior and the users' verbal behavior towards one another and towards the agent have been analyzed. Gaze and verbal behavior towards the agent partly resembles patterns found in the literature for human-human interactions, partly the behavior deviates from these observations and could be interpreted as rude or impolite like continuous staring, insulting, or talking about the agent. For most of these seemingly abusive behaviors, a more thorough analysis reveals that they are either acceptable or present some interesting insights for improving the interaction design between users and embodied conversational agents.
© All rights reserved Rehm and/or Elsevier Science
Koda, Tomoko, Rehm, Matthias and Andre, Elisabeth (2008): Cross-Cultural Evaluations of Avatar Facial Expressions Designed by Western Designers. In: Prendinger, Helmut, Lester, James C. and Ishizuka, Mitsuru (eds.) IVA 2008 - Intelligent Virtual Agents - 8th International Conference September 1-3, 2008, Tokyo, Japan. pp. 245-252.
Lipi, Afia Akhter, Yamaoka, Yuji, Rehm, Matthias and Nakano, Yukiko I. (2008): Enculturating Conversational Agents Based on a Comparative Corpus Study. In: Prendinger, Helmut, Lester, James C. and Ishizuka, Mitsuru (eds.) IVA 2008 - Intelligent Virtual Agents - 8th International Conference September 1-3, 2008, Tokyo, Japan. pp. 465-467.
Rehm, Matthias, Nakano, Yukiko I., Andre, Elisabeth and Nishida, Toyoaki (2008): Culture-Specific First Meeting Encounters between Virtual Agents. In: Prendinger, Helmut, Lester, James C. and Ishizuka, Mitsuru (eds.) IVA 2008 - Intelligent Virtual Agents - 8th International Conference September 1-3, 2008, Tokyo, Japan. pp. 223-236.
Rehm, Matthias, Bee, Nikolaus and Andre, Elisabeth (2008): Wave Like an Egyptian -- Accelerometer Based Gesture Recognition for Culture Specific Interactions. In: Proceedings of the HCI08 Conference on People and Computers XXII 2008. pp. 13-22.
The user's behavior and his interpretation of interactions with others is influenced by his cultural background, which provides a number of heuristics or patterns of behaviour and interpretation. This cultural influence on interaction has largely been neglected in HCI research due to two challenges: (i) grasping culture as a computational term and (ii) infering the user's cultural background by observable measures. In this paper, we describe how the Wiimote can be utilized to uncover the user's cultural background by analyzing his patterns of gestural expressivity in a model based on cultural dimensions. With this information at hand, the behavior of an interactive system can be adapted to culture-dependent patterns of interaction.
© All rights reserved Rehm et al. and/or their publisher
Rehm, Matthias, Bee, Nikolaus, Endrass, Birgit, Wissner, Michael and Andre, Elisabeth (2007): Too close for comfort?: adapting to the user's cultural background. In: Proceedings of the 2007 ACM International Workshop on Human-Centered Multimedia 2007. pp. 85-94.
The cultural context of the user is a largely neglected aspect of human centered computing. This is because culture is a very fuzzy concept and even with a computational model of culture it remains difficult to derive the necessary information to recognize the user's cultural background. Such information is only indirectly available and has to be derived from the observable multimodal behavior of the user. We propose the usage of a dimensional model of culture that allows applying computational methods to derive a user's cultural background and to adjust the system's behavior accordingly. To this end, a Bayesian network is applied to allow for the necessary inferences despite the fact that the given knowledge about the user's behavior is incomplete and unreliable.
© All rights reserved Rehm et al. and/or ACM Press
Rehm, Matthias, Bee, Nikolaus, Endrass, Birgit, Wissner, Michael and Andre, Elisabeth (2007): Too close for comfort?: adapting to the user's cultural background. In: Proceedings of the 2007 ACM International Workshop on Human-Centered Multimedia 2007. pp. 85-94.
The cultural context of the user is a largely neglected aspect of human centered computing. This is because culture is a very fuzzy concept and even with a computational model of culture it remains difficult to derive the necessary information to recognize the user's cultural background. Such information is only indirectly available and has to be derived from the observable multimodal behavior of the user. We propose the usage of a dimensional model of culture that allows applying computational methods to derive a user's cultural background and to adjust the system's behavior accordingly. To this end, a Bayesian network is applied to allow for the necessary inferences despite the fact that the given knowledge about the user's behavior is incomplete and unreliable.
© All rights reserved Rehm et al. and/or ACM Press
Rehm, Matthias, Endraß, Birgit and Andre, Elisabeth (2006): A Plug-and-Play Framework for Theories of Social Group Dynamics. In: Gratch, Jonathan, Young, Michael, Aylett, Ruth, Ballin, Daniel and Olivier, Patrick (eds.) IVA 2006 - Intelligent Virtual Agents - 6th International Conference August 21-23, 2006, Marina Del Rey, CA, USA. pp. 465-466.
Rehm, Matthias and Andre, Elisabeth (2005): Where Do They Look? Gaze Behaviors of Multiple Users Interacting with an Embodied Conversational Agent. In: Panayiotopoulos, Themis, Gratch, Jonathan, Aylett, Ruth, Ballin, Daniel, Olivier, Patrick and Rist, Thomas (eds.) IVA 2005 - Intelligent Virtual Agents - 5th International Working Conference September 12-14, 2005, Kos, Greece. pp. 241-252.
Rehm, Matthias (2003): Multimodal Training Between Agents. In: Rist, Thomas, Aylett, Ruth, Ballin, Daniel and Rickel, Jeff (eds.) IVA 2003 - Intelligent Agents - 4th International Workshop September 15-17, 2003, Kloster Irsee, Germany. pp. 348-353.
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