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The adaptive non-harmonic (ANH) model is a powerful tool to compactly represent oscillating signals with time-varying amplitude and phase, and non-sinusoidal oscillating morphology. Given good estimators of instantaneous amplitude and phase…

信号处理 · 电气工程与系统科学 2023-09-28 Joaquin Ruiz , Marcelo A. Colominas

This article introduces the multi-objective adaptive order Caputo fractional gradient descent (MOAOCFGD) algorithm for solving unconstrained multi-objective problems. The proposed method performs equally well for both smooth and non-smooth…

最优化与控制 · 数学 2025-07-11 Barsha Shaw , Md Abu Talhamainuddin Ansary

In this paper, we study a class of stochastic and finite-sum convex optimization problems with deterministic constraints. Existing methods typically aim to find an $\epsilon$-$expectedly\ feasible\ stochastic\ optimal$ solution, in which…

最优化与控制 · 数学 2025-06-26 Zhaosong Lu , Yifeng Xiao

A new adaptive hybrid optimization strategy, entitled squads, is proposed for complex inverse analysis of computationally intensive physical models. The new strategy is designed to be computationally efficient and robust in identification…

地球物理 · 物理学 2015-06-03 Velimir V. Vesselinov , Dylan R. Harp

Many real-world problems are dynamic optimization problems that are unknown beforehand. In practice, unpredictable events such as the arrival of new jobs, due date changes, and reservation cancellations, changes in parameters or constraints…

神经与进化计算 · 计算机科学 2024-02-28 Sanjai Pathak , Ashish Mani , Mayank Sharma , Amlan Chatterjee

In Part I \cite{Zhao13TSPasync1}, we introduced a fairly general model for asynchronous events over adaptive networks including random topologies, random link failures, random data arrival times, and agents turning on and off randomly. We…

系统与控制 · 计算机科学 2014-12-17 Xiaochuan Zhao , Ali H. Sayed

We consider the problem of variables selection and estimation in linear regression model in situations where the number of parameters diverges with the sample size. We propose the adaptive Generalized Ridge-Lasso (\mbox{AdaGril}) which is…

统计方法学 · 统计学 2013-02-27 Mohammed El Anbari , Abdallah Mkhadri

The primary goal of this paper is to provide an efficient solution algorithm based on the augmented Lagrangian framework for optimization problems with a stochastic objective function and deterministic constraints. Our main contribution is…

最优化与控制 · 数学 2023-12-29 Raghu Bollapragada , Cem Karamanli , Brendan Keith , Boyan Lazarov , Socratis Petrides , Jingyi Wang

In this work, we consider a group of robots working together to manipulate a rigid object to track a desired trajectory in $SE(3)$. The robots do not know the mass or friction properties of the object, or where they are attached to the…

机器人学 · 计算机科学 2021-08-23 Preston Culbertson , Jean-Jacques E. Slotine , Mac Schwager

Motivated by recent progress in data assimilation, we develop an algorithm to dynamically learn the parameters of a chaotic system from partial observations. Under reasonable assumptions, we rigorously establish the convergence of this…

经典分析与常微分方程 · 数学 2021-08-20 Elizabeth Carlson , Joshua Hudson , Adam Larios , Vincent R. Martinez , Eunice Ng , Jared P. Whitehead

Diffusion Probabilistic Models (DPMs) have achieved significant success in generative tasks. However, their training and sampling processes suffer from the issue of distribution mismatch. During the denoising process, the input data…

机器学习 · 计算机科学 2025-02-25 Zekun Wang , Mingyang Yi , Shuchen Xue , Zhenguo Li , Ming Liu , Bing Qin , Zhi-Ming Ma

Modern large-scale statistical models require to estimate thousands to millions of parameters. This is often accomplished by iterative algorithms such as gradient descent, projected gradient descent or their accelerated versions. What are…

机器学习 · 统计学 2020-03-04 Michael Celentano , Andrea Montanari , Yuchen Wu

Data-parallel distributed training of deep neural networks (DNN) has gained very widespread adoption, but can still experience communication bottlenecks. To address this issue, entire families of compression mechanisms have been developed,…

机器学习 · 计算机科学 2023-06-12 Mohammadreza Alimohammadi , Ilia Markov , Elias Frantar , Dan Alistarh

This paper investigates the controller optimization for a helicopter system with three degrees of freedom (3-DOF). To control the system, we combined fuzzy logic with adaptive control theory. The system is extensively nonlinear and highly…

机器人学 · 计算机科学 2022-05-03 Shokoufeh Naderi , Maude J. Blondin , Behrooz Rezaie

Anomaly detection of time series plays an important role in reliability systems engineering. However, in practical application, there is no precisely defined boundary between normal and anomalous behaviors in different application…

机器学习 · 计算机科学 2020-10-16 Ziling Wu , Ping Liu , Zheng Hu , Bocheng Li , Jun Wang

We consider the problem of simultaneous variable selection and estimation of the corresponding regression coefficients in an ultra-high dimensional linear regression models, an extremely important problem in the recent era. The adaptive…

统计方法学 · 统计学 2023-09-22 Abhik Ghosh , Maria Jaenada , Leandro Pardo

Minimising a spectral risk objective, defined as a convex combination of expected cost and Conditional Value-at-Risk (CVaR), is challenging when the uncertainty distribution is decision-dependent, making both surrogate modelling and…

机器学习 · 计算机科学 2026-03-16 Marcell T. Kurbucz

Decentralized optimization algorithms have attracted intensive interests recently, as it has a balanced communication pattern, especially when solving large-scale machine learning problems. Stochastic Path Integrated Differential Estimator…

机器学习 · 计算机科学 2019-12-02 Taoxing Pan , Jun Liu , Jie Wang

Ant Colony Optimization (ACO) is a well-known method inspired by the foraging behavior of ants and is extensively used to solve combinatorial optimization problems. In this paper, we first consider a general framework based on the concept…

数据结构与算法 · 计算机科学 2025-01-22 Bodo Manthey , Jesse van Rhijn , Ashkan Safari , Tjark Vredeveld

In warehouses, order picking is known to be the most labor-intensive and costly task in which the employees account for a large part of the warehouse performance. Hence, many approaches exist, that optimize the order picking process based…

神经与进化计算 · 计算机科学 2021-12-23 Veronika Lesch , Patrick B. M. Müller , Moritz Krämer , Samuel Kounev , Christian Krupitzer