Assuming that the parameter variable is divided into k equal parts, n variables into k-level decision problem, each one has k +1 nodes (k +1) × n nodes. From one to the n-level variables are connected together to form a solution within the solution space.

assumes that the parameter variable is divided into K, N K variable into a decision-making at every level, a K + 1 nodes, there are (K + 1) x N node. From Level 1 to level the first N variable between connected together, and make up the space of one.