手法を比較

	半教師あり画像分類	自己教師あり画像分類
分野	深層学習	深層学習
系統	Machine learning	Machine learning
提唱年	2013–2020	2018–2020
提唱者	Lee, D.-H. (pseudo-label); Sohn et al. (FixMatch)	Chen et al. (SimCLR); He et al. (MoCo); Grill et al. (BYOL); Caron et al. (DINO)
種類	Semi-supervised deep learning	Pretraining + fine-tuning paradigm
原典	Lee, D.-H. (2013). Pseudo-Label: The Simple and Efficient Semi-Supervised Learning Method for Deep Neural Networks. ICML 2013 Workshop on Challenges in Representation Learning.	Chen, T., Kornblith, S., Norouzi, M., & Hinton, G. (2020). A Simple Framework for Contrastive Learning of Visual Representations. Proceedings of the 37th International Conference on Machine Learning (ICML), PMLR 119, 1597–1607.
別名	SSL image classification, semi-supervised CNN classification, pseudo-label image classification, label-efficient image classification	SSL image classification, contrastive visual representation learning, self-supervised visual learning, unsupervised pretraining for image classification
関連	5	4
概要	Semi-supervised image classification trains deep neural networks on a small set of labeled images together with a much larger pool of unlabeled images. Techniques such as pseudo-labeling, consistency regularization, and confidence thresholding allow the model to leverage the structure of unlabeled data, dramatically reducing the need for expensive manual annotation while approaching fully-supervised accuracy.	Self-supervised image classification trains a deep visual encoder on large unlabeled image datasets by solving proxy tasks — such as predicting which two augmented views of the same image are similar — and then fine-tunes only a lightweight classifier head on labeled examples. Pioneered by frameworks such as SimCLR and MoCo around 2020, it drastically reduces the need for expensive manual annotation while achieving accuracy rivaling fully supervised models.