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Evaluating the User Interface of a Ubiquitous Computing system Doorman

Evaluating the User Interface of a Ubiquitous Computing system Doorman. Tampere University Computer Human Interaction Group. Kaj Mäkelä 30.9.2001. The Ubicomp System Doorman. Speech based UbiComp system Aim of the Doorman is to:

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Evaluating the User Interface of a Ubiquitous Computing system Doorman

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  1. Evaluating the User Interface of a Ubiquitous Computing system Doorman TampereUniversityComputerHumanInteractionGroup Kaj Mäkelä 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. The Doorman system

  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. 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. 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. 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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