CS 4750 HumanComputer Interface Design and Evaluation User Interface Design

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CS 4750 Human-Computer Interface Design and
EvaluationUser Interface Design

• Chris Shaw

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Agenda

• Introductions - Me, TA
• HCI Overview
• Objectives
• Principles
• Review HCIs history
• Key people and events
• Course Info, Project
• Description, details

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Introductions

• Instructor
• Chris Shaw
• HCI
• Two-Handed 3D interfaces
• Scientific Information Visualization
• Virtual Reality Software

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Introductions

• TA
• Alan Chen
• smile_at_cs.gatech.edu

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Course Information

• Book -- The Humane Interface
• By Jef Raskin Published by Addison-Wesley
• Web
• Syllabus
• Assignments
• Co-web
• HCI resources
• Related courses

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Course Information

• Grading
• Mid-term exam 20
• Project (4 parts) 15 each --gt 60
• Homework 10
• Short Homework 10
• Advice Learn from past
• Content, lectures, projects, ...

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Why We Are Here

• Look at human factors that affect software design
  and development
• Central Topic User interface design

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HCI

• What happens when a human and a computer get
  together to perform a task
• Task
• Write a document
• Plan a budget
• Design a presentation
• Play a video game
• Not a task..
• Goof off (obviously)

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Why is this important?

• Computers (in one way or another) now affect
  every person in society
• Increasing use computers in work
• Product success may depend on ease of use, not
  necessarily power

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Course Aims

• Consciousness raising for you
• Eg. Don Norman
• The Design of Everyday Things
• Doors
• Handles afford various opening method
• Design critic
• Eg. Latest Borg product

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Goals of HCI

• Allow users to carry out tasks
• Safely
• Effectively
• Efficiently
• Enjoyably

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Usability

• Important issue
• Combination of
• Ease of learning
• High speed of user task performance
• Low user error rate
• Subjective user satisfaction
• User retention over time

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Key Historical Event

• Design of the first Mac 1983-1984
• The computer for the rest of us

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Moving Forward

• How do we improve interfaces?
• 1. Change attitude of software professional
• Slap that interface on
• 2. Draw upon fast accumulating body of knowledge
  regarding H-C interface design
• 3. Integrate UI design methods techniques into
  standard software development methodologies now
  in place

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Improving Interfaces

• Know the User!
• Physical abilities
• Cognitive abilities
• Personality differences
• Skill differences
• Cultural diversity
• Motivation
• Special needs

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Two Crucial Errors

• Assume all users are alike
• Assume all users are like the designer

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UI Design/Develop Process

• Analyze users goals
• Create design alternatives
• Analyze them
• Implement prototype
• Test
• Refine

Design
Implement
Evaluate
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Evaluation

• Things we can measure
• Time to learn
• Speed of performance
• Rate of errors by user
• Retention over time
• Subjective satisfaction

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Interfaces in the World

• VCR
• Mouse
• Phone
• Copier
• Car
• Airline reservation
• Air traffic control

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Group Project

• Design and evaluate an interface
• 0 Team, Topic
• 1 Understanding problem
• 2 Design
• 3 Implement prototype
• 4 Evaluate

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Project Teams

• 3-4 people (diverse is best!)
• Consider schedules
• Cool name

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Project Topics

• Set of possibilities
• Max of 2 teams per topic
• First-come, first-served
• By Wednesday August 30
• Web materials overseer
• File space
• Real client

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Clients

• Could be provided by me
• See the class website
• Could be provided by you!
• I must talk to this person or group first

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Special Dates

• October 4 in class - Poster session
• Feedback on design ideas
• December 4 6, last week
• Project presentations

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Get 2 points toward final grade!

• For participating in a VR experiment
• Visit www.net3000.com/VR and sign-up
• This week and next week ONLY!
• Signups for August 21-25 are online now!
• Sessions are conducted in the Centennial Research
  Building, room 375