human computer interaction csc 4730-100 user system interface csc 8570-001
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Human Computer Interaction CSC 4730-100 User System Interface CSC 8570-001. Class Meeting 6 October 2, 2012. Outline for Evening. One-minute assessment Research project issues Table creation revisited Augmenting GUEPs and CDs Course themes reprise Edge and Blackwell concept map. - PowerPoint PPT PresentationTRANSCRIPT
Human Computer InteractionCSC 4730-100
User System InterfaceCSC 8570-001
Class Meeting 6October 2, 2012
Outline for Evening
• One-minute assessment• Research project issues• Table creation revisited• Augmenting GUEPs and CDs• Course themes reprise• Edge and Blackwell concept map
One Minute Assessment
Do not put your name on the paperOn one side of the paper, list• The two most important concepts that you
have learned so far.On the other side of the paper, list• The thing (or things) that you are most
confused about.
Research Project IssuesMy question: • Suppose your hypothesis says that design A is faster than
design B.• You gather timing data from a number of subjects (say N=23)• You compute the average total task time (summed over a
number of tasks)– Design A: 13.68 seconds– Design B: 15.12 seconds
• Do the data support your hypothesis? [Note data is plural.]• What is the negation of the previous statement?
If your results need a statistician, then you should design a better experiment. -- Baron Ernest Rutherford
My Question (2)• What statistical test do you use to check your assertion?• Do you need more information to use the test? If so, what?• Do you need to make assumptions to apply the test? If so,
what?• Does this plan for the statistical treatment of the data make
sense?
Research Project Issues
• Your questions:
Table Creation
• Interesting semantic question arose– Relevant to Consistency GUEP– Related questions in spreadsheet and word
processing systems• In a spreadsheet, which cell becomes active
when the user taps– Tab– Enter– Another navigation key
Table Creation (2)
• In a word processing system, when entering data into a table, which cell becomes active when the user taps– Tab– Enter– Another navigation key
• How might one model these situations?
Augmenting GUEPs and CDs
Our goals:• Rephrase GUEPs and CDs, if necessary• Develop examples of interface items described
by GUEPs and CDs• Relate the approaches embodied in GUEPs
and CDsSee the handout for a summary of GUEPs and CDs
Themes
• Models, theories, frameworksForm a foundation for understanding• What users want (What do they want?)Which is interpreted by the• Design principle hierarchy– GUEPs (Generative User Engineering Principles)– General design principles– Implementable design guidelines
Themes (2)Users are directed in their approach to a system by• Mental models– Problem space version: Set of states and paths from one
state to the next leading to a solution– Theory version: What users believe to be true about
particular domains, devices, or systemsAnd• The cognitive dimensions (CDs) of understanding
(which describe ways of thinking).– Related to GUEPs as described by the 14 by 9 matrix.
Themes (3)
We have devised a path from abstraction to implementation based on:
• Cognitive dimensions• GUEPs• Design principles• Task analysis
Task Analysis
Preparing for task analysis• Tasks vs. goals• Hierarchical task analysis vs. GOMS• ConcurTaskTrees– http://giove.cnuce.cnr.it/ctte.html
ConcurTaskTreesTask Types
Type Action Example
User No system interaction
Read a message
Abstraction Complex User sessionApplication No user
interactionPerform a database query
Interaction User and system together
Click a button
ConcurTaskTreesOperators
Temporal OperatorsIcon Description Syntax[] Choice T1 [] T2|=| Order
IndependencyT1 |=| T2
||| Concurrent T1 ||| T2|[ ]| Concurrent with
information exchange
T1 |[ ]| T2
[> Disabling T1 [> T2|> Suspend/Resume T1 |> T2>> Enabling T1 >> T2[] >> Enabling with
information exchange
T1 [] >> T2
T1Connection[ T1 ]Optional [ ]T1 *Iterative *SyntaxDescriptionIcon
Unary Operators
Tangible User Interfaces
• What are they?– Definition– Examples
Anand Agarawala: 2007
• TED talk on BumpTop
John Underkoffler: 2010
• TED talk on tangible interfaces
Silly Aside
Exercise: For the 26 3-character strings, [A-Z]UI, give the definition or description of the user interface described by the acronym.
For example, GUI stands for Graphical User Interface and describes any interface using icons or other graphical elements to access data or operations.
TUI (2)
• What is the power of a WIMP interface?– Is the analysis (done by Edge and Blackwell) of its
actions correct?
TUI (3)
• What is the power of a TUI?– What does “power” mean in this context?
TUI (4)Top level concepts• Physical layer; physical tokens
– Aligning tokens; lines of tokens– Stacking tokens
• Virtual layer– Synchronization with physical layer– Feedback: visual, auditory, tactile– Abstraction of time
• Virtual – Physical Level– Degree of embodiment– Degree of synchronization– Degree of coherence
TUI (5)
• Manipulable solid diagrams• Tokens; token aggregation– Object order– Continuous values– Token association
• Superior to WIMP– uses DM more effectively– uses D of F with hands more efficiently
Example• What do you want from a mapping system?• Does this match with what the system provides?• Explore– Mapquest– Google Maps– Yahoo Maps– Mappy.com– AAA.com– Microsoft Streets and Trips
Example• What do you want from a rapid transit routing
system?• Does this match with what the system provides?• Explore– Atlanta MARTA– Philadelphia SEPTA– Washington DC Metro– San Francisco BART– Denver DART
Next Time
• Continue work on research project, completing experimental material and IRB form.
Research Team Meetings