Core Concepts
Orthonormal deep linear neural networks can achieve linear convergence with appropriate initialization, shedding light on the impact of orthonormality on training.
Abstract
Enforcing orthonormal weight matrices enhances deep neural network training.
Theoretical analysis of orthonormality in neural networks is lacking.
Riemannian gradient descent shows linear convergence for orthonormal deep linear neural networks.
Excluding orthonormal constraints for one layer is crucial for convergence.
Increasing hidden layers impacts convergence speed.
Experimental results validate theoretical analysis.
Stats
"Riemannian gradient descent exhibits linear convergence speed when appropriately initialized."
"The rate of convergence only experiences a polynomial decrease as the number of layers increases."
Quotes
"Enforcing orthonormal or isometric properties of weight matrices has numerous advantages for deep learning."
"Our results demonstrate that within a specific class of loss functions, Riemannian gradient descent exhibits linear convergence speed when appropriately initialized."