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Some convergence results of a modified asymptotical regularization gradient method for nonlinear ill-posed operator equation.
Yehui Peng
Heying Feng
Aijun Bu
Published in:
Int. J. Comput. Math. (2010)
Keyphrases
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gradient method
convergence rate
derivative free
convex formulation
inverse problems
step size
optimization methods
convergence speed
learning rate
super resolution
negative matrix factorization
global optimization
image restoration
feature extraction
cost function
simulated annealing