Optimal Diagnosis Strategy via Functional Extremum Transformation and Fault Elimination Neural Network: A Minimum Diagnosis-Cost Approach for Complex Systems

For complex systems with complex structures and limited fault data, expert knowledge-based methods are often preferred. The multi-signal flow graph model is a representative qualitative approach, but generating a minimum-cost diagnostic strategy under this model becomes increasingly difficult as system scale grows, leading to excessive diagnostic cost or unacceptable computation time. To address this issue, this paper reformulates the minimum-cost diagnostic strategy generation problem (MDP) as