Directed systems lattices in reconstructability estimation
The progression from neutral systems to directed systems is natural given the identification of generating variables in the mask analysis process of the General Systems Problem Solver. Any overall system of n variables may be represented by n-1 lattices of structures, each lattice containing 1 less than or equal to alpha < n input variables and beta = n - alpha generated variables. The structures comprising each lattice are composed of a combination of environmental input, generating-input, generating-output, neutral, and generated variables. Structures which contain one or more neutral variables are called semi-directed or s-structures, and structures which do not contain neutral variables are called fully-directed or d-structures. Any s-structure can be evaluated into two or more d-structures. Catalogues of s-structure lattices for n = 3 and 4 variables are given.
directed systems reconstruction estimation s-structure reconstructibility analysis d-structure strong cover weak cover