方法对比

	自监督学习	Siamese Neural Network
领域	机器学习	深度学习
方法族	Machine learning	Machine learning
起源年份	2018–2020	1993
提出者	LeCun, Y. and community (formalized ~2018–2020)	Jane Bromley & Yann LeCun et al.; popularized by Koch et al.
类型	Representation learning paradigm	Deep metric-learning architecture
开创性文献	LeCun, Y. & Misra, I. (2022). Self-supervised learning: The dark matter of intelligence. Meta AI Blog. https://ai.facebook.com/blog/self-supervised-learning-the-dark-matter-of-intelligence/	Bromley, J., Guyon, I., LeCun, Y., Säckinger, E., & Shah, R. (1993). Signature verification using a 'Siamese' time delay neural network. Advances in Neural Information Processing Systems, 6.
别名	SSL, self-supervised pre-training, pretext-task learning, unsupervised representation learning	twin network, Siamese neural network, contrastive metric network, Siyam ağı
相关	3	1
摘要	Self-supervised learning (SSL) is a machine-learning paradigm that generates its own supervisory signal directly from unlabeled data by defining an auxiliary pretext task — such as predicting masked words, rotating images, or contrasting augmented views — and uses the learned representations as a powerful starting point for downstream tasks with minimal labeled examples.	A Siamese network is a deep architecture with two (or more) identical, weight-sharing branches that map inputs into an embedding space where similar inputs land close together and dissimilar ones far apart. Introduced by Bromley, LeCun, and colleagues in 1993 for signature verification and revived by Koch et al. (2015) for one-shot image recognition, it learns a similarity metric rather than fixed class labels, making it ideal for verification, matching, and few-shot tasks.