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We propose an approximation of nonlinear renewal equations by means of ordinary differential equations. We consider the integrated state, which is absolutely continuous and satisfies a delay differential equation. By applying the…

数值分析 · 数学 2021-03-23 Francesca Scarabel , Odo Diekmann , Rossana Vermiglio

A state-of-the-art deep domain decomposition method (D3M) based on the variational principle is proposed for partial differential equations (PDEs). The solution of PDEs can be formulated as the solution of a constrained optimization…

机器学习 · 计算机科学 2020-04-03 Ke Li , Kejun Tang , Tianfan Wu , Qifeng Liao

Dynamic Mode Decomposition (DMD) is an unsupervised machine learning method that has attracted considerable attention in recent years owing to its equation-free structure, ability to easily identify coherent spatio-temporal structures in…

机器学习 · 计算机科学 2022-02-16 Alex Viguerie , Gabriel F. Barros , Malú Grave , Alessandro Reali , Alvaro L. G. A. Coutinho

We propose a Regularized Adaptive Momentum Dual Averaging (RAMDA) algorithm for training structured neural networks. Similar to existing regularized adaptive methods, the subproblem for computing the update direction of RAMDA involves a…

机器学习 · 计算机科学 2024-12-30 Zih-Syuan Huang , Ching-pei Lee

In this paper, an innovative Physical Model-driven Neural Network (PMNN) method is proposed to solve time-fractional differential equations. It establishes a temporal iteration scheme based on physical model-driven neural networks which…

机器学习 · 计算机科学 2023-10-10 Zhiying Ma , Jie Hou , Wenhao Zhu , Yaxin Peng , Ying Li

Value functions arise as a component of algorithms as well as performance metrics in statistics and engineering applications. Computation of the associated Bellman equations is numerically challenging in all but a few special cases. A…

系统与控制 · 计算机科学 2018-12-27 Adithya M. Devraj , Sean P. Meyn

This paper proposes a deep-learning-based domain decomposition method (DeepDDM), which leverages deep neural networks (DNN) to discretize the subproblems divided by domain decomposition methods (DDM) for solving partial differential…

数值分析 · 数学 2020-04-13 Wuyang Li , Xueshuang Xiang , Yingxiang Xu

We consider a class of difference-of-convex (DC) optimization problems where the objective function is the sum of a smooth function and a possible nonsmooth DC function. The application of proximal DC algorithms to address this problem…

最优化与控制 · 数学 2023-08-30 Shummin Nakayama , Yasushi Narushima , Hiroshi Yabe

In this article a new approach in solving time fractional partial differential equations is introduced, that is, the ARA-residual power series method. The main idea of this technique, depends on applying the ARA-transform and using Taylor's…

计算工程、金融与科学 · 计算机科学 2023-06-22 A. Burqan , R. Saadeh , A. Qazza , S. Momani

Recently, a Distribution Separation Method (DSM) is proposed for relevant feedback in information retrieval, which aims to approximate the true relevance distribution by separating a seed irrelevance distribution from the mixture one. While…

信息检索 · 计算机科学 2015-10-19 Peng Zhang , Qian Yu , Yuexian Hou , Dawei Song , Jingfei Li , Bin Hu

This note contains a short and simple proof of Wormald's differential equation method (that yields slightly improved approximation guarantees and error probabilities). This powerful method uses differential equations to approximate the…

组合数学 · 数学 2019-06-18 Lutz Warnke

We consider large linear and nonlinear fixed point problems, and solution with proximal algorithms. We show that there is a close connection between two seemingly different types of methods from distinct fields: 1) Proximal iterations for…

数值分析 · 计算机科学 2019-09-05 Dimitri P. Bertsekas

Deep Matching (DM) is a popular high-quality method for quasi-dense image matching. Despite its name, however, the original DM formulation does not yield a deep neural network that can be trained end-to-end via backpropagation. In this…

计算机视觉与模式识别 · 计算机科学 2016-09-13 James Thewlis , Shuai Zheng , Philip H. S. Torr , Andrea Vedaldi

In this article, a modification of the rapidly convergent approximation method is proposed to solve a coupled Korteweg-de Vries equations with conformable derivative that govern shallow-water waves. Based on the Leibniz and chain rule of…

数学物理 · 物理学 2020-11-04 Prakash Kumar Das

The recently developed Doubles Connected Moments (DCM) expansion offers a tractable approach for computing correlation energy, exhibiting an noniterative O(N^6) scaling with system size N. Benchmark calculations on a set of molecules…

化学物理 · 物理学 2026-05-12 Chongxiao Zhao , Wenjie Dou

This paper proposes two efficient approximation methods to solve high-dimensional fully nonlinear partial differential equations (NPDEs) and second-order backward stochastic differential equations (2BSDEs), where such high-dimensional fully…

数值分析 · 数学 2023-01-18 Xu Xiao , Wenlin Qiu , Omid Nikan

This paper proposes a dynamical Variable-separation method for solving parameter-dependent dynamical systems. To achieve this, we establish a dynamical low-rank approximation for the solutions of these dynamical systems by successively…

数值分析 · 数学 2025-02-13 Liang Chen , Yaru Chen , Qiuqi Li , Tao Zhou

Probabilistic sampling methods have become very popular to solve single-shot path planning problems. Rapidly-exploring Random Trees (RRTs) in particular have been shown to be very efficient in solving high dimensional problems. Even though…

人工智能 · 计算机科学 2009-12-03 Nicolas A. Barriga , Mauricio Araya-López , Mauricio Solar

This paper provides a comprehensive discussion of the equivalences between splitting methods. These equivalences have been studied over the past few decades and, in fact, have proven to be very useful. In this paper, we survey known results…

最优化与控制 · 数学 2018-06-12 Walaa M. Moursi , Yuriy Zinchenko

This paper presents a Direct Mapped Method (DMM) for real-time simulation of high switching frequency resonant converters. The DMM links state variables to diode statuses and provides an exact and noniterative solution to network equations.…

系统与控制 · 电气工程与系统科学 2020-06-09 Hossein Chalangar , Tarek Ould-Bachir , Keyhan Sheshyekani , Jean Mahseredjian
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