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stanford hci group / cs376 http://cs376.stanford.ed u Scott Klemmer · 02 November 2006 Inpu t Techniqu es
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2 Final project papers & presentations Final papers: 4 pages in the traditional CHI format or 6 pages in the work-in-progress format (same effective length, I suggest the latter as you can submit it to CHI WIP) Final presentations: 4 minutes each, followed by posters/demos There will be outside reviewers, also folks from industry will be coming
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3 How to write a good paper Have a clear hypothesis Explain design ideas, system, and eval Read your critiques of earlier work Compare your results to 4-5 pieces of related work scholar.google.com is a great resource
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4 Milestone 2 demo times 1:30 - Deepak Kumar and David Tu 1:40 - David Akers 1:50 - Luping May, Kevin Collins, Scott Doorley 2:00 - Malte F. Jung, Howard Kao, Ravi Teja Tiruvury, Parul Vora 2:10 - Becky Currano and Murad Akhter 2:20 - Christina Chan 2:30 - Tom Hurlbutt 2:40 - Dhyanesh Narayanan 2:50 - BREAK 3:00 - Dean Eckles, Tony Tulathimutte, Tanya Breshears 3:10 - Jonathan Effrat and May Tan 3:20 - Shailendra Rao and Abhay Sukumaran 3:30 - Adam Kahn and Doug Wightman 3:40 - Brandon Burr 3:50 - Angela Kessell and Chris Chan
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5 Pointing Device Evaluation Real task: interacting with GUI’s pointing is fundamental D W Experimental task: target acquisition abstract, elementary, essential
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6 Fitts’ Law (Paul Fitts, 1954) D W Index of Performance (IP ) = ID/MT (bits/s) Throughput Bandwidth Index of Difficulty (ID ) Task difficulty is analogous to information - execution interpreted as human rate of information processing
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7 50 years of data Reference: MacKenzie, I. Fitts’ Law as a research and design tool in human computer interaction. Human Computer Interaction, 1992, Vol. 7, pp. 91-139
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8 What does Fitts’ law really model? Veloci ty (c) (b) (a) Target Width Distance
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9 Using these law’s to predict performance Which will be faster on average? pie menu (bigger targets & less distance)? Today Sunday Monday Tuesday Wednesday Thursday Friday Saturday Pop-up Linear Menu Pop-up Pie Menu
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10 Beyond pointing: Trajectory based tasks
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11 Gaming Fitts Law The Macintosh menu bar and taskbar and the Windows XP Taskbar have “infinite height” improving their Fitts Law performance …as does the back button in the Firefox browser
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14 Yves Guiard: Kinematic Chain Asymmetry in bimanual activities “Under standard conditions, the spontaneous writing speed of adults is reduced by some 20% when instructions prevent the non-preferred hand from manipulating the page” Non-dominant hand (NDH) provides a frame of reference for the dominant hand (DH) NDH operates at a course temporal and spatial scale; DH operates at a fine temporal and spatial scale
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15 Next Time… Information Visualization Readings in Information Visualization: Using Vision to Think, Chapter 1, Stuart K. Card, Jock D. Mackinlay, Ben Shneiderman The Table Lens: Merging Graphical and Symbolic Representations in an Interactive Focus+Context Visualization for Tabular Information, Ramana Rao and Stuart K. Card
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