Search Results - "Khan, Usman"

Distributed Heavy-Ball: A Generalization and Acceleration of First-Order Methods With Gradient Tracking by Xin, Ran, Khan, Usman A.

“…We study distributed optimization to minimize a sum of smooth and strongly-convex functions. Recent work on this problem uses gradient tracking to achieve…”
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Decentralized Optimization Over Time-Varying Directed Graphs With Row and Column-Stochastic Matrices by Saadatniaki, Fakhteh, Xin, Ran, Khan, Usman A.

“…In this article, we provide a distributed optimization algorithm, termed as TV-<inline-formula><tex-math notation="LaTeX">\mathcal…”
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An Improved Convergence Analysis for Decentralized Online Stochastic Non-Convex Optimization by Xin, Ran, Khan, Usman A., Kar, Soummya

“…In this paper, we study decentralized online stochastic non-convex optimization over a network of nodes. Integrating a technique called gradient tracking in…”
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Variance-Reduced Decentralized Stochastic Optimization With Accelerated Convergence by Xin, Ran, Khan, Usman A., Kar, Soummya

“…This paper describes a novel algorithmic framework to minimize a finite-sum of functions available over a network of nodes. The proposed framework, that we…”
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A General Framework for Decentralized Optimization With First-Order Methods by Xin, Ran, Pu, Shi, Nedic, Angelia, Khan, Usman A.

“…Decentralized optimization to minimize a finite sum of functions, distributed over a network of nodes, has been a significant area within control and…”
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A Fast Randomized Incremental Gradient Method for Decentralized Nonconvex Optimization by Xin, Ran, Khan, Usman A., Kar, Soummya

“…In this article, we study decentralized nonconvex finite-sum minimization problems described over a network of nodes, where each node possesses a local batch…”
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Current Progress in 2D Metal–Organic Frameworks for Electrocatalysis by Khan, Usman, Nairan, Adeela, Gao, Junkuo, Zhang, Qichun

“…The 2D nanosheets of metal–organic frameworks (MOFs) have recently emerged as a promising material that makes them valuable in widespread electrocatalytic…”
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Distributed Nesterov Gradient Methods Over Arbitrary Graphs by Xin, Ran, Jakovetic, Dusan, Khan, Usman A.

“…In this letter, we introduce a distributed Nesterov gradient method, <inline-formula><tex-math notation="LaTeX">\mathcal {ABN}</tex-math></inline-formula>,…”
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Imaging Patients with Psychosis and a Mouse Model Establishes a Spreading Pattern of Hippocampal Dysfunction and Implicates Glutamate as a Driver by Schobel, Scott A., Chaudhury, Nashid H., Khan, Usman A., Paniagua, Beatriz, Styner, Martin A., Asllani, Iris, Inbar, Benjamin P., Corcoran, Cheryl M., Lieberman, Jeffrey A., Moore, Holly, Small, Scott A.

“…The hippocampus in schizophrenia is characterized by both hypermetabolism and reduced size. It remains unknown whether these abnormalities are mechanistically…”
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Linear Convergence in Optimization Over Directed Graphs With Row-Stochastic Matrices by Xi, Chenguang, Mai, Van Sy, Xin, Ran, Abed, Eyad H., Khan, Usman A.

“…This paper considers a distributed optimization problem over a multiagent network, in which the objective function is a sum of individual cost functions at the…”
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Piezoelectric properties in two-dimensional materials: Simulations and experiments by Hinchet, Ronan, Khan, Usman, Falconi, Christian, Kim, Sang-Woo

“…We review the state of the art on two-dimensional (2D) piezoelectricity, with reference to both computational predictions and experimental characterization…”
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A Comprehensive Review of Low Impact Development Models for Research, Conceptual, Preliminary and Detailed Design Applications by Kaykhosravi, Sahereh, Khan, Usman, Jadidi, Amaneh

“…This review compares and evaluates eleven Low Impact Development (LID) models on the basis of: (i) general model features including the model application, the…”
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FROST—Fast row-stochastic optimization with uncoordinated step-sizes by Xin, Ran, Xi, Chenguang, Khan, Usman A.

“…In this paper, we discuss distributed optimization over directed graphs, where doubly stochastic weights cannot be constructed. Most of the existing algorithms…”
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Morphology and surface chemistry engineering toward pH-universal catalysts for hydrogen evolution at high current density by Luo, Yuting, Tang, Lei, Khan, Usman, Yu, Qiangmin, Cheng, Hui-Ming, Zou, Xiaolong, Liu, Bilu

“…Large-scale implementation of electrochemical hydrogen production requires several fundamental issues to be solved, including understanding the mechanism and…”
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Molecular drivers and cortical spread of lateral entorhinal cortex dysfunction in preclinical Alzheimer's disease by Khan, Usman A, Liu, Li, Provenzano, Frank A, Berman, Diego E, Profaci, Caterina P, Sloan, Richard, Mayeux, Richard, Duff, Karen E, Small, Scott A

“…In the brains of Alzheimer's disease patients, the entorhinal cortex is known to show signs of early pathology. In this study, Khan et al . performed cerebral…”
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Distributed Localization: A Linear Theory by Safavi, Sam, Khan, Usman A., Kar, Soummya, Moura, Jose M. F.

“…Fifth-generation (5G) networks providing much higher bandwidth and faster data rates will allow connecting vast number of stationary and mobile devices,…”
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Flood Risk Mapping Using GIS and Multi-Criteria Analysis: A Greater Toronto Area Case Study by Rincón, Daniela, Khan, Usman, Armenakis, Costas

“…Given the increase in flood events in recent years, accurate flood risk assessment is an important component of flood mitigation in urban areas. This research…”
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Graphene Tribotronics for Electronic Skin and Touch Screen Applications by Khan, Usman, Kim, Tae‐Ho, Ryu, Hanjun, Seung, Wanchul, Kim, Sang‐Woo

“…Graphene tribotronics is introduced for touch‐sensing applications such as electronic skins and touch screens. The devices are based on a coplanar coupling of…”
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Feature enhancement framework for brain tumor segmentation and classification by Tahir, Bilal, Iqbal, Sajid, Usman Ghani Khan, M., Saba, Tanzila, Mehmood, Zahid, Anjum, Adeel, Mahmood, Toqeer

“…Automatic medical image analysis is one of the key tasks being used by the medical community for disease diagnosis and treatment planning. Statistical methods…”
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Revisiting Finite-Time Distributed Algorithms via Successive Nulling of Eigenvalues by Safavi, Sam, Khan, Usman A.

“…In this letter, we characterize the finite-time behavior on arbitrary undirected graphs. In particular, we derive distributed iterations that are a function of…”
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