A generalized digraph simulator
Brooke Allen · 1976
Directed Graphs (Digraphs) can be used as powerful tools in the simulation of many social, political and economic models. Because the digraph can be thought of as a matrix and a transformation as simply a matrix multiplication, APL lends itself quite nicely to the implementation of a digraph simulation system. A collection of APL programs have been written (called GENSIM) that allow for the easy interactive definition correction, revision, running and outputting of digraph models. This paper gives a brief introduction to digraphs in apl terminology, a discussion of GENSIM and a sample terminal session showing the use of GENSIM.