“…Various kinds of ANNs, such as Multilayer Perceptron (MLP), Recurrent Neural Network, Learning Vector Quantization, Time Delay Neural Network, Adaptive Resonance Theory, Self-Organizing Map, Radial Basis Function (RBF) network (Sick 2002) etc., have been tested in tool wear prediction problems. One of these, MLP, generally trained with a back-propagation error algorithm, is the most popular (Sick 2002). Dornfeld 1990, who pioneered the application of ANN to TCM, used a multilayer feed-forward neural network to integrate the features from multiple sensors (acoustic emission and force) in order to predict the tool wear in a turning operation.…”