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Evaluating the User Interface of a Ubiquitous Computing system Doorman Kaj Mäkelä 30.9.2001 Tampere University Computer Human Interaction Group.

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Presentation on theme: "Evaluating the User Interface of a Ubiquitous Computing system Doorman Kaj Mäkelä 30.9.2001 Tampere University Computer Human Interaction Group."— Presentation transcript:

1 Evaluating the User Interface of a Ubiquitous Computing system Doorman Kaj Mäkelä 30.9.2001 Tampere University Computer Human Interaction Group

2 30.9.2001 2 The Ubicomp System Doorman Speech based UbiComp system Aim of the Doorman is to: Identify the target of the visitor’s visit or the identity of the staff member Open the door and guide the visitors in TAUCHI premises Convey personal and organisational messages to staff members All the visitors should be served in some way Outputs: Speech synthesis Anthropomorphic guide robot using pointing gestures Inputs: Speech recognition, speaker recognition Switches (door, doorbell) and IR sensor Based on Jaspis architecture

3 30.9.2001 3 The Doorman system

4 30.9.2001 4 The Wizard of Oz Experiment Testing the current dialogue and the interaction model, how well they serve the users Part of the iterative design process System fully implemented, only speech recognition missing Speech recognition simulated by a human Wizard A Wizard application for giving manual speech recognition inputs All the speech inputs and system prompts were recorded for analysis and transcripted The behaviour of the users with the robot was observed

5 30.9.2001 5 The Results 74 cases: 22 visitors, 52 staff members  too little data for generalisation Problems found System prompts too long and annoying  Needs to be reformed and shortened System not competitive with a key  System initiative needs to be increased to gain more users

6 30.9.2001 6 Conclusion The experiment gave valuable information on the actual use and the behaviour of the users Brought up many design issues and problems and help to develope the system further Modularity of the Jaspis architecture made the Woz experiment easy We recommend using the Woz experiments as a part of the iterative design process of UbiComp systems

7 30.9.2001 7 Contact Tampere Unit for Computer-Human Interaction (TAUCHI) http://www.cs.uta.fi/hci/ Speech & Pervasive Interaction group (SPI) http://www.cs.uta.fi/hci/spi/ Doorman system (Ovimies in Finnish) http://www.cs.uta.fi/hci/spi/Ovimies/ Jaspis architecture http://www.cs.uta.fi/hci/spi/Jaspis/ Kaj Mäkelä, e-mail: kaj@cs.uta.fi

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