TRishBB embeds stochastic Barzilai-Borwein steplengths into the TRish trust-region rule and adds convergence guarantees for nonconvex finite-sum problems without diminishing step sizes.
Nesterov, Lectures on convex optimization
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Fully stochastic trust-region methods with Barzilai-Borwein steplengths
TRishBB embeds stochastic Barzilai-Borwein steplengths into the TRish trust-region rule and adds convergence guarantees for nonconvex finite-sum problems without diminishing step sizes.