Abstract
Design Rationale is an approach to design which emphasizes working with explicit representations not only of possible design solutions, but also of the reasons and processes behind them. Design Space Analysis is a Design Rationale-based framework which emphasizes the production of a design space (rather than a single solution). We report here on the use of Design Space Analysis and its associated notation, QOC (Questions, Options, Criteria), to support the design of user interfaces for educational hypermedia systems. We describe lessons learned about how to make best use of it, where it works well, and some of the difficulties we have encountered.
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