Feature extraction Convolutional neural networks 27 Deep learning 25 Neural networks 18 Extraction 16 Features extraction 16 Convolutional neural network 15 deep learning 15 Classification (of information) 13 Deep neural networks 13 Convolution 12 Forecasting 10 convolutional neural network 10 Neural-networks 8 Neural Networks, Computer 7 Image enhancement 6 Machine learning 6 human 6 machine learning 6 Deep Learning 5 Humans 5 Learning systems 5 Article 4 Computer aided diagnosis 4 Diseases 4 Features selection 4 Image recognition 4 Long short-term memory 4 Object detection 4 Predictive models 4