machine learning Technology: general issues 88 deep learning 83 History of engineering & technology 80 artificial intelligence 63 Research & information: general 60 classification 39 convolutional neural network 30 neural networks 29 artificial neural network 27 random forest 27 neural network 26 optimization 25 transfer learning 25 convolutional neural networks 24 image processing 24 remote sensing 24 Medicine 22 artificial neural networks 22 sustainability 19 climate change 18 feature selection 18 COVID-19 17 feature extraction 17 pattern recognition 17 clustering 16 reliability 16 support vector machine 16 Information technology industries 15 IoT 15