Human-Computer Interaction

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Presentation transcript:

Human-Computer Interaction ECE 695 Alexander J. Quinn January 8, 2018

HCI at other US universities U of Washington DUB - Design-Use-Build HCDE - Human-Centered Design & Engineering Degrees: MHCI+D x 48 Stanford Stanford HCI Group Degrees: none x 4 Georgia Tech School of Interactive Computing Degrees: MS-HCI and PhD-HCC x 54 MIT Media Lab (CSAIL: faculty labs) Degrees: MS, PhD x >30 Carnegie Mellon HCII – Human-Computer Interaction Institute Degrees: MHCI, PhD-HCI U of Illinois HCI Group x 5 U of Maryland HCIL – Human-Computer Interaction Lab Degrees: MS-HCI x 26 UC Berkeley Berkeley Inst. of Design Jacobs Institute x 20

hci.ecn.purdue.edu Dual Xeon E5-2680v3 CPUs 24 cores / 48 threads @ 2.5 GHz 128 GB RAM DDR4 @ 2133 million transfers/second 8 TB storage Near-line storage, RAID6 w/ 4 x 2TB Dual power supplies 450W, hot-swappable http://www.storagereview.com/dell_poweredge_13g_r530_review

“Performance” requests per second uptime average response time peak response time network throughput mean time between failures …

“Performance”

Performance Parameter Mean Range Eye movement time 230 ms 70-700 ms Decay half-life of visual image storage 200 ms 90-1000 ms Visual Capacity 17 letters 7-17 letters Decay half-life of auditory storage 1500 ms 90-3500 ms Auditory Capacity 5 letters 4.4-6.2 letters Perceptual processor cycle time 100 ms 50-200 ms Cognitive processor cycle time 70 ms 25-170 ms Motor processor cycle time 30-100 ms Effective working memory capacity 7 chunks 5-9 chunks Pure working memory capacity 3 chunks 2.5-4.2 chunks Decay half-life of working memory 7 sec 5-226 sec Decay half-life of 1 chunk working memory 73 sec 73-226 sec Decay half-life of 3 chunks working memory 5-34 sec

Human Information Processor (Card, Moran, Newell, 1986)

“Performance”

Gulf of execution Execution bridge goals physical system Evaluation action specification intentions evaluation interface display interpretation mechanism (Don Norman, 1986)

Direct manipulation Represent objects by physical appearance Effective conceptual model Represent actions by effects on screen Rapid feedback and reversability Engagement Feel that you are working on the data/task https://hcik4.wordpress.com/2008/11/01/direct-manipulation-cont/

Usability Learnability Efficiency Memorability Errors Satisfaction (Jakob Nielson, 1994)

Gestalt grouping principles http://blog.fusioncharts.com/2014/03/how-to-use-the-gestalt-principles-for-visual-storytelling-podv/