手法を比較

	データ拡張（Data Augmentation）	分布外検出 (Out-of-Distribution Detection)
分野	深層学習	機械学習
系統	Machine learning	Machine learning
提唱年	2019	2017
提唱者	Connor Shorten & Taghi Khoshgoftaar	Hendrycks & Gimpel
種類	Regularization / data preprocessing technique	Reliability and safety method for neural networks
原典	Shorten, C., & Khoshgoftaar, T. M. (2019). A survey on image data augmentation for deep learning. Journal of Big Data, 6, 60.	Hendrycks, D., & Gimpel, K. (2017). A baseline for detecting misclassified and out-of-distribution examples in neural networks. International Conference on Learning Representations.
別名	Training Data Augmentation, Image Augmentation, Veri Artırma, Synthetic Data Augmentation	OOD Detection, Novelty Detection, Open-Set Recognition, Dağılım Dışı Tespit
関連	2	3
概要	Data augmentation is a family of techniques that artificially expands a training dataset by applying label-preserving transformations to existing samples. Originally systematized for image classification tasks, it is now applied broadly across vision, text, audio, and tabular domains. It emerged as a practical answer to the chronic scarcity of labeled data in supervised deep learning and remains a standard preprocessing step in modern neural network pipelines.	Out-of-Distribution (OOD) detection is a set of techniques that identify when a deployed machine learning model receives inputs that differ significantly from its training data distribution. Introduced as a formal problem by Hendrycks and Gimpel in 2017, these methods enable models to flag unfamiliar inputs rather than silently produce unreliable predictions, making them foundational to trustworthy and safe AI deployment in high-stakes domains.