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SBD:%20Analyzing%20Requirements

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illustrate and put into context the tasks and themes discovered in the field studies ... Explicit vs tacit knowledge. Approaches: Contextual inquiry (ask during) ... – PowerPoint PPT presentation

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Title: SBD:%20Analyzing%20Requirements


1
SBD Analyzing Requirements
  • Chris North
  • cs3724 HCI

2
ANALYZE
claims about current practice
analysis of stakeholders, field studies
Problem scenarios
DESIGN
Activity scenarios
iterative analysis of usability claims
and re-design
metaphors, information technology, HCI
theory, guidelines
Information scenarios
Interaction scenarios
PROTOTYPE EVALUATE
summative evaluation
formative evaluation
Usability specifications
3
Analyzing Requirements
  • Goal understand users current activities well
    enough to reason about technology-based
    enhancements

4
Root concept vision, rationale, assumptions,
stakeholders
SBD and Requirements Analysis
Field studies workplace observations, recordings
, interviews, artifacts
Summaries stakeholder, task, and artifact
analyses, general themes
Problem scenarios illustrate and put into
context the tasks and themes discovered in the
field studies
Claims analysis find and incorporate features of
practice that have key implications for use
5
Categories
  • People
  • Activities
  • Artifacts
  • Social context

6
The ethnographic method
  • Field studies, not lab experiments
  • Comes from anthropology
  • Generalize from the few and the particular
  • Its just one possible method
  • Explicit vs tacit knowledge
  • Approaches
  • Contextual inquiry (ask during)
  • Participatory analysis (ask after)

7
Some suggestions on how to see
  • Leave your categories at home
  • Forgetting is seeing things anew.
  • Listen
  • Talk
  • Reflect on what youve seen and heard
  • Does it make sense?
  • Can you tell a complete story?

8
Representations
  • How to represent the problem?
  • Scenarios
  • Video, pictures, storyboard
  • HTA hierarchical task analysis

9
Grocery Shopping
10
Project
  • W/Th teams topics
  • 2 weeks Requirements Analysis
  • Your mission find out about your users
  • Who are they?
  • What matters to them?
  • What do they do in their work?
  • What is unexpected?
  • How do they now get to the information your
    project will present to them?
  • What is the scenario of their current work
    practice?
  • Can you imagine alternate scenarios?
  • Start NOW!
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