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Communications of the ACM

Communications of the ACM

An array grammar programming system

A package of Fortran programs has been developed that permits a user to interactively design and test array grammars. The user can control the rule selection procedure in a derivation or parse, using weighted programming matrices; he also has a choice of instance selection schemes (raster, random, parallel). Examples are given involving array languages consisting of simple geometrical patterns, as well as a language of “neuron pictures.”

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