The research methods of operational research are as follows: 1. Extract essential elements from real life situations to build a mathematical model, so as to seek solutions related to the goals of decision makers; 2. Explore the structure of the solution and deduce the solution process of the system; 3. Seek the optimal solution of the system from the feasible scheme.
The main purpose of operational research is to find the best scheme for rational application of manpower, material resources and financial resources.