In addition to the use of ANN to solve the traveling salesman problem, ANN was also used for
solving linear programming (LP) problems. For example, Zak et al. [22] compared three ANNs
in terms of their model complexity, complexity of individual neurons, and accuracy of solutions.
Xia [23] compares three ANNs and proposes a network for solving the general LP problems
through using simple hardware. At the same time, Cichocki et al. [17] recommend a new network
to manage LP problems on-line by a simplified low-cost analog network. These works give us a
trend for making further applications.