EDSS Decision Model
An elaboration of the IBIS IPA (Issues, Proposals, Arguments) model.
- Issue: A problem to be resolved or decision to be made.
e.g., What language should we select for our new products?
- Proposal: A suggestion for resolving an issue. We call these Alternatives.
e.g., C++
- Criterion: A target or benchmark the selected alternative should meet.
e.g., Must have high quality development environments for Unix, PC, and Mac.
- Argument: In our model, a statement that an alternative
will or will not satisfy one of the
criteria we have developed for evaluating alternatives.
e.g., Will satisfy: G++ on Unix, VC++ on Windows95, and CodeWarrior on the Mac.
More on Arguments:
- Any team member can make an argument on any subset of the alternative/criterion pairs.
- Team members bring diverse levels of knowledge to the group.
- Team members may be more or less confident in their assesments.
- EDSS permits team members to record both their level of knowledge and confidence with each assessment.
- EDSS combines arguments to generate an overall assessment of the viability of each alternative
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EDSS tutorial / OSU / dambrosi@research.cs.orst.edu
Last updated: February 17, 1996 SGG