Deep learning Convolutional neural networks 22 Learning systems 21 deep learning 21 Learning algorithms 17 Convolutional neural network 15 Forecasting 15 Convolution 14 Deep Learning 12 human 12 Semantics 11 Deep neural networks 10 Classification (of information) 9 Feature extraction 9 Machine learning 9 Neural networks 9 Transfer learning 9 convolutional neural network 9 machine learning 9 Extraction 8 Humans 8 article 8 Image enhancement 7 Neural Networks, Computer 7 'current 5 Diagnosis 5 Diseases 5 Features extraction 5 Machine Learning 5 Machine-learning 5