An Evolutionary Optimization Approach to Cost-Based Abduction, with Comparison to PSO. - Shawn T. Chivers; Gene A. Tagliarini; Ashraf M. Abdelbar (IJCNN, 2007)

Finding Least Cost Proofs Using a Hierarchical PSO. - Shawn T. Chivers; Gene A. Tagliarini; Ashraf M. Abdelbar (SIS, 2007)