Differential Privacy。ε-DP・(ε,δ)-DP・Laplace Noise・Gaussian Noise・PATE Private Aggregation of Teacher Ensembles・Apple Differential Privacy (ε=2-8)・Google RAPPOR・Microsoft SmartNoise・OpenDP (Harvard・FOSS)・Diffprivlib (IBM)・PyDP (OpenMined Python Wrapper)・TensorFlow Privacy・Opacus (PyTorch DP-SGD)・Flower DP・¥0 OSS、2026年DP-SGD LLM学習採用拡大。