Results 51 to 60 of about 1,804,722 (202)
Oracle Complexity in Nonsmooth Nonconvex Optimization [PDF]
, 2022 It is well-known that given a smooth, bounded-from-below, and possibly nonconvex function, standard gradient-based methods can find $\epsilon$-stationary points (with gradient norm less than $\epsilon$) in $\mathcal{O}(1/\epsilon^2)$ iterations. However,
Kornowski, Guy, Shamir, Ohad
core +1 more source
Computation offloading scheme for RIS-empowered UAV edge network
Tongxin xuebao, 2022 In order to address the challenge of low offloading rate caused by the obstacles blocking in the links between unmanned aerial vehicle (UAV) and ground users (GU) in urban scene, a partial task offloading scheme for UAV-enabled mobile edge computing with
Bin LI +3 more
doaj +2 more sources
Complexity, 2017 Network-structured optimization problems are found widely in engineering applications. In this paper, we investigate a nonconvex distributed optimization problem with inequality constraints associated with a time-varying multiagent network, in which each
Jueyou Li +3 more
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Power Control Algorithm in Heterogeneous Network Based on Iterative Approximation [PDF]
Jisuanji gongcheng, 2018 To solve the problem of shortage of spectrum resources,a power control algorithm is proposed under the condition that the Quality of Service(QoS) of Macro-cellular User Equipment(MUE) is satisfied.It approximates the nonconvex objective function in three
LIU Gang,ZHAO Hangsheng,SHAO Hongxiang,LI Dali
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Energy Science &Engineering, EarlyView.Deployment of an aging‐based controller during designing of optimal lithium‐ion battery—supercapacitor (LB‐Sc) hybrid energy storage system (HESS) capacity, in off‐grid IREMGs, improves performance of the LB and reduces its aging rate. Also, annualised cost of the LB‐Sc HESS improves by 33.15% in relation to optimal LB SESS.
Isaac Gwayi +2 more
wiley +1 more source
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT In this study, a robust position control strategy is presented for a two‐stage electro‐hydraulic actuator system using a fractional‐order proportional–integral–derivative (FOPID) controller tuned by Kirchhoff's law algorithm (KLA). Electro‐hydraulic systems exhibit strong nonlinearities, parameter uncertainties, and external disturbances ...
Ridvan Firat Cinar +8 more
wiley +1 more source
Safeguarded Reinforcement Learning for Dynamic Environments
Optimal Control Applications and Methods, EarlyView.This paper uses a combination of Reinforcement Learning and Funnel Control to train a fast and safe controller for systems operating in changing environments. Furthermore, the presented formulation overcomes former limitations associated with the need for predefined reference trajectories.
Simon Gottschalk
wiley +1 more source
Subgradient Smoothing Method for Nonsmooth Nonconvex Optimization
, 2021 In this chapter an unconstrained nonsmooth nonconvex optimization problem is considered and a method for solving this problem is developed. In this method the subproblem for finding search directions is reduced to the unconstrained minimization of a ...
A. M. Bagirov +7 more
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On Convex Relaxations in Nonconvex Optimization
Chemical Engineering Transactions, 2011 preview not available - see full-text PDF article.
T. Westerlund, A. Lundell, J. Westerlund
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Control Design Based on Generalized Lur'e Lyapunov Functions for Sampled‐Data Lur'e Systems
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT This article addresses the synthesis of stabilizing control laws for aperiodic sampled‐data Lur'e systems. Based on a hybrid system representation of the closed‐loop system and a timer‐dependent generalized Lur'e–Postnikov type Lyapunov function, stabilization conditions are obtained by separating decision variables with the application of two
Arthur Scolari Fagundes +2 more
wiley +1 more source