Specification and dialogue control of visual interaction through visual rewriting systems
ACM Transactions on Programming Languages and Systems (TOPLAS)
A completely visual environment for agent-based computing
AVI '98 Proceedings of the working conference on Advanced visual interfaces
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In order to manage visual interaction problems, we deepen a formalisation of visual languages, based on the notion of visual sentence, introduced in a previous paper. Visual Conditional attributed rewriting systems (vCARWs) are proposed for the specification of visual languages. We argue that vCARWs can be viewed as a generalization of Conditional Set Rewrite Systems, which in turn were shown to be as expressive as textual context-free grammars, Picture Layout Grammars, and Constraint Multiset Grammars. Last, we outline a procedure to translate visual gestures into visual sentences according to vCARW rules. Keywords: rewriting systems, visual sentence, visual interaction