4 research outputs found
Temporized and localized rule sets
Constraint management plays an important role in design
applications where constraints reect design restrictions and
design decisions. ECA rules are a widely used mechanism to
enforce constraints. The paper argues that such rules must be
augmented for design environments by a spatial and a temporal
dimension of validity, resulting in so-called
area-event-condition-action (AECA) rules. The spatial dimension
allows to restrict constraints locally in the design space, and
to control interaction between designers. The temporal dimension
permits designers to retract their designs to earlier stages.
The paper introduces the concept of AECA rules, motivates them
by examples from building design, discusses rule management, and
then introduces two important issues, conflict detection during
collaboration, and backtracking during design revision
Temporized and localized rule sets
Abstract. Constraint management plays an important role in design applications where constraints re ect design restrictions and design decisions. ECA rules are a widely used mechanism to enforce constraints. The paper argues that such rules must be augmented for design environments by a spatial and a temporal dimension of validity, resulting in so-called area-event-condition-action (AECA) rules. The spatial dimension allows to restrict constraints locally in the design space, and to control interaction between designers. The temporal dimension permits designers to retract their designs to earlier stages. The paper introduces the concept of AECA rules, motivates them by examples from building design, discusses rule management, and then introduces two important issues, con ict detection during collaboration, and backtracking during design revision.