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Linear Convergence of Variance-Reduced Projected Stochastic Gradient without Strong Convexity.
Pinghua Gong
Jieping Ye
Published in:
CoRR (2014)
Keyphrases
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stochastic gradient
grassmann manifold
nearest neighbor classifier
step size
stochastic gradient descent
exponentiated gradient
convex hull
convergence speed
linear model
objective function
knn
image restoration
covariance matrix
image set
convergence rate