Learning Rate Free
Learning-rate-free optimization aims to eliminate the need for manual tuning of learning rates, a crucial hyperparameter in many machine learning algorithms. Current research focuses on developing adaptive methods, such as modifications of stochastic gradient descent (SGD) and Adam, and applying these techniques across various domains including reinforcement learning and Riemannian manifold optimization. These advancements improve algorithm robustness and user-friendliness by automating a previously laborious and problem-specific process, leading to more efficient and reliable training of machine learning models. The resulting algorithms often demonstrate performance comparable to those with optimally tuned learning rates, offering significant practical benefits.