We are conducting the research that includes robot learning and machine learning using ANFIS (Adaptive Neuro-fuzy Reference System). I have a question about the recent machine learning study. Comparing with five years ago, for training the machine learning algorithms, there are fewer citations from studies that use heuristic methods such as Particle Swarm Optimization (PSO) or Genetic Algorithm (GA) methods.
Previous studies have shown that these methods are effective, but why do they not much used these days?