Domain adaptation Deep learning 6 domain adaptation 5 Transfer learning 4 Classification (of information) 3 Learning systems 3 Machine learning 3 Target domain 3 convolutional neural network 3 learning 3 transfer learning 3 Adaptation methods 2 Article 2 Convolutional neural networks 2 Deep Learning 2 Different domains 2 Feature extraction 2 Fine tuning 2 Frequency domain analysis 2 Humans 2 Image classification 2 Object detection 2 Object recognition 2 Objects detection 2 Self-supervised learning 2 Semantic Segmentation 2 Semantics 2 Unsupervised domain adaptation 2 deep learning 2 human 2