A Survey on Visual Languages Formal Specification by Grammatical Approach
可视化语言文法形式化描述综述

Visual languages is an important component of human-computer interaction. Grammar provides a useful formalism for specifying visual languages. This paper begins with the analysis of characterization of visual languages, then reviews theoretical aspects of grammar-like visual language formal specification, particularly of graph grammar and attributed multiset grammar, and also discusses several specification formalisms in the field. Several current re- search tasks and their challenge are pointed out finally.