Transcript CS 3724 SP 04 - Georgia Institute of Technology

CS 3724:
Introduction to Human
Computer Interaction
Chris North
Jason Lee
Szu-Chia Lu
WELCOME
TO THE
NEXT LEVEL
“Toto, I don’t think
we’re in 2604 anymore.”
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Class discussion, participation
HWs/Projects: open-ended
Group project
Student presentations
Textbook
• Mary Beth Rosson and John M.
Carroll, Usability Engineering:
Scenario-Based Development of
HCI
(required)
• Visual C# .NET,
Step-by-Step by Sharp&Jagger
or Core Ref by Williams
(optional)
The Project
• Team-based
• Choose topic
– Information vizualization
• Problem seeking / problem solving
• Find users & problem, prototype, interim
review presentation, evaluate, revise, final
presentation
• C# language?
Grading Breakdown
•Presentation (hall of fame/shame)
•homework
(4 x 5%)
•Mid term
•Design project
•Team formation
•Requirements
•Formative analysis & design
•Interim presentation
•Prototype implementation
•Summative Evaluation
•Final presentation
•Final implementation
•Final
5%
20%
10%
50%
0%
10%
20%
5%
10%
20%
5%
30%
15%
Policies
 Homework due in class Thurs. Late = 0
 No early exams, make up by advance
arrangement
 Signed request with rationale
 Reminder of VT Honor Code
 Specifically, tests and homeworks are individual
 Students with special needs see me ASAP
Adminstrivia
• Force-adds and prerequisite forms
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CRN is 91680 / 91681
Prerequisite is CS 2604, REQUIRED
Everyone must complete the forms TODAY
Must attend today
Add decisions by next meeting
• Web page (courses.cs.vt.edu/~cs3724)
contains syllabus, lecture outlines,
assignments, and related materials
HCI ???
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5.
What is it?
Who cares?
Why is it hard?
How does it work?
What will I learn?
1. What is HCI?
1. What is HCI?
Human-Computer Interaction
1. What is HCI?
Human-Computer Interaction
1. Requirements analysis
2. Design
3. Development
4. Evaluation
of user interfaces for computer systems
Huh?
An example:
HomeFinder
Apartments.com
Hit
List
HomeFinder
The Goal of HCI
Usability
• People are trying to accomplish their tasks in life.
(system independent)
task
person
system
• Introduce a system,
User Interface should maximize their ability.
2. Who Cares?
Everyone, because:
1. Everything is a User Interface
Doors
More Doors
2. Who Cares?
Everyone, because:
1. Everything is a User Interface
2. The User Interface is Everything
Florida Cares!
• Human error:
Who’s fault is it?
3. Why is it so hard?
Usability is hard
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People (users) are all different
People are unpredictable
Design skill isn’t enough
Evaluation with users is required
Designer’s pride
New ways to think, break out of the box
Usability is hard
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People (users) are all different
People are unpredictable
Design skill isn’t enough
Evaluation with users is required
Designer’s pride
New ways to think, break out of the box
Programmers stink at Usability
Usability is hard
Programmers stink at Usability
• don’t think like ‘normal’ people
• know the software internals,
technology first
• enjoy systems more than people
• arrogant (my software!)
4. How does it work?
Usability Engineering
Reqs Analysis
Design
Evaluate
Develop
4. How does it work?
Usability Engineering
Reqs Analysis
Design
Evaluate
Develop
many iterations
5. What will I learn?
• Task analysis
• Ethnography
Reqs Analysis
• Usability studies
• Controlled experiments
Design
Evaluate
Develop
• GUI programming
• Widgets, graphics, animation
• C#
• Activity design
• Information design
• Interaction design
ANALYZE
analysis of
stakeholders,
field studies
Problem scenarios
claims about
current
practice
Scenario-Based Design
DESIGN
metaphors,
information
technology,
HCI theory,
guidelines
Activity
scenarios
Information scenarios
iterative
analysis of
usability
claims and
re-design
Interaction scenarios
PROTOTYPE & EVALUATE
summative
evaluation
Usability specifications
formative
evaluation
Grander Goals?
• Get angry!
• Mental shift:
• From system-centered design
to user-centered design
• Break out of the box
Before you Leave…
• Prerequisites form!