Neural networks Mean square error 28 Forecasting 10 Backpropagation 8 artificial neural network 7 Decision trees 6 Errors 5 Linear regression 5 Particle swarm optimization (PSO) 5 Root mean square errors 5 Learning algorithms 4 Machine learning 4 Neural-networks 4 ANN 3 Auto-regressive 3 Complex nonlinear system 3 Deep learning 3 Joints (anatomy) 3 Mean absolute error 3 Muscle 3 Nonlinear systems 3 Support vector machines 3 Wind 3 Wind speed 3 Artificial neural network 2 Back propagation neural networks 2 Backpropagation algorithms 2 China 2 Classification (of information) 2 Convolution 2