Classification (of information) Learning systems 10 Feature extraction 7 human 7 machine learning 7 Article 6 Features extraction 6 Humans 6 Machine learning 5 Support vector machines 5 Algorithms 4 Convolution 4 Decision trees 4 Deep learning 4 Machine-learning 4 Text processing 4 algorithm 4 artificial neural network 4 classification 4 deep learning 4 learning algorithm 4 support vector machine 4 Codes (symbols) 3 Computer aided diagnosis 3 Computerized tomography 3 Convolutional neural network 3 Diagnosis 3 Digital storage 3 Extraction 3 Internet of things 3