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The limited memory version of the Broyden-Fletcher-Goldfarb-Shanno (L-BFGS) algorithm is the most popular quasi-Newton algorithm in machine learning and optimization. Recently, it was shown that the stochastic L-BFGS (sL-BFGS) algorithm with the variance-reduced stochastic gradient converges linearly. In this paper, we propose a new sL-BFGS algorithm by importing a proper momentum. We prove an accelerated linear convergence rate under mild conditions. The experimental results on different data sets also verify this acceleration advantage.
This article was published in the following journal.
Name: IEEE transactions on neural networks and learning systems
Currently in HDR brachytherapy planning, a manual fine-tuning of an objective function is necessary to obtain case-specific valid plans. This study intends to facilitate this process by proposing two ...
The present paper introduces a new micro-meso hybrid algorithm based on the Ghost Cell Method (GCM) concept in which the microscopic subdomain is governed by the Reactive Multi-Particle Collision (RMP...
Molecular dynamics (MD) simulations are widely used to explore the conformational space of biological macromolecules. Advances in hardware, as well as in methods, make the generation of large and comp...
Cryo-electron microscopy provides 2-D projection images of the 3-D electron scattering intensity of many instances of the particle under study (e.g., a virus). Both symmetry (rotational point groups) ...
This paper presents a preconditioned Krasnoselskii-Mann (KM) algorithm with an improved EM preconditioner (IEM-PKMA) for higher-order total variation (HOTV) regularized positron emission tomography (P...
This study evaluates the effectiveness of stochastic resonance electric stimulation on neuromuscular control and proprioception in healthy and individuals with stroke.
The purpose of this study is to examine the efficacy of a specially-constructed crib mattress that delivers gentle vibrations (stochastic vibrotactile stimulation) as a complementary, non-...
This study is comparing accelerated versus nonaccelerated rehabilitation following ACL reconstruction. Patients undergoing ACL reconstruction will be randomly allocated to one of the two r...
This is a multicentric randomized phase III trial comparing conventional radiotherapy with concomitant chemotherapy versus accelerated radiotherapy with concomitant chemotherapy versus ver...
Background: Patients with bilateral vestibular hypofunction (BVH) frequently presented with dysequilibrium, dizziness and oscillopsia, leading to increased risk for fall. The mainstream fo...
The rotation of linearly polarized light as it passes through various media.
Clonal hematopoetic disorder caused by an acquired genetic defect in PLURIPOTENT STEM CELLS. It starts in MYELOID CELLS of the bone marrow, invades the blood and then other organs. The condition progresses from a stable, more indolent, chronic phase (LEUKEMIA, MYELOID, CHRONIC PHASE) lasting up to 7 years, to an advanced phase composed of an accelerated phase (LEUKEMIA, MYELOID, ACCELERATED PHASE) and BLAST CRISIS.
Processes that incorporate some element of randomness, used particularly to refer to a time series of random variables.
A stochastic process such that the conditional probability distribution for a state at any future instant, given the present state, is unaffected by any additional knowledge of the past history of the system.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.