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Design problem-solving requires designers to be creative and to express evaluative judgments. Designers propose successive partial solutions and evaluate these solutions with respect to various criteria and constraints. Evaluation plays a major role in design because each successive evaluation step guides the course of design activity. However, evaluation of design solutions is difficult for both experienced and inexperienced designers because: (1) in complex domains, no single person can know all the relevant criteria and constraints, and (2) design solutions must be evaluated from multiple, and sometimes conflicting, perspectives. Domain-oriented design environments have been proposed as computational tools supporting designers to construct and evaluate design solutions. Critiquing systems embedded in these environments support evaluation activities by analysing design solutions for compliance with …