Problem formulation in artificial intelligence (AI) is the key method of identifying and creating a problem so that it can be solved effectively by an intelligent system. This includes clearly presenting the problem statement, defining the initial state, and specifying the nature of the goal that AI should achieve. It also includes describing the state space, which includes all the states that the system can resolve, and defining the actions that can go from one state to another. In addition, the transition model, which indicates the effects of the actions on the nature of the system, should be developed together with the path cost, which determines the effectiveness of different solutions.