نتایج جستجو برای: gradient algorithm

تعداد نتایج: 859818  

Journal: :Journal of Computational and Applied Mathematics 2009

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی صنایع 1381

چکیده ندارد.

Journal: :Journal of Computational and Applied Mathematics 2004

Journal: :Acta Crystallographica Section A Foundations and Advances 2019

Journal: :Proceedings of the ... AAAI Conference on Artificial Intelligence 2022

Optimal transport (OT) plays an essential role in various areas like machine learning and deep learning. However, computing discrete optimal plan for large scale problems with adequate accuracy efficiency is still highly challenging. Recently, methods based on the Sinkhorn algorithm add entropy regularizer to prime problem get a trade off between accuracy. In this paper, we propose novel furthe...

In the last decades, helicopter-borne electromagnetic (HEM) method became a focus of interest in the fields of mineral exploration, geological mapping, groundwater resource investigation and environmental monitoring. As a standard approach, researchers use 1-D inversion of the acquired HEM data to recover the conductivity/resistivity-depth models. Since the relation between HEM data and model ...

2013
Xiaomin Duan Huafei Sun Z. N. ZHANG

A new framework based on the curved Riemannian manifold is proposed to calculate the numerical solution of the Lyapunov matrix equation by using a natural gradient descent algorithm and taking the geodesic distance as the objective function. Moreover, a gradient descent algorithm based on the classical Euclidean distance is provided to compare with this natural gradient descent algorithm. Furth...

: In this paper, the operation scheduling of Microgrids (MGs), including Distributed Energy Resources (DERs) and Energy Storage Systems (ESSs), is proposed using a Deep Reinforcement Learning (DRL) based approach. Due to the dynamic characteristic of the problem, it firstly is formulated as a Markov Decision Process (MDP). Next, Deep Deterministic Policy Gradient (DDPG) algorithm is presented t...

Journal: :مکانیک سیالات و آیرودینامیک 0
نیما سام خانیانی محمدرضا انصاری

in this paper, direct numerical simulation of two-phase incompressible gas-liquid flow for simulation of bubble motion in a microtube is presented. microtube radius is 10 µm. the interface is tracked using volume of fluid (vof) method with continuous surface force (csf) model. the flow is solved using a finite volume scheme, based on piso algorithm. numerical simulation is performed on a axisym...

K.S. Lee, S.W. Han, Z.W. Geem,

Many methods have been developed for structural size and configuration optimization in which cross-sectional areas are usually assumed to be continuous. In most practical structural engineering design problems, however, the design variables are discrete. This paper proposes two efficient structural optimization methods based on the harmony search (HS) heuristic algorithm that treat both discret...

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