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Remaining useful life (RUL) prediction based on vibration signals is crucial for ensuring the safe operation and effective health management of rotating machinery. Existing studies often extract health indicators (HI) from time domain and…

信号处理 · 电气工程与系统科学 2024-06-26 Yunchong Long , Qinkang Pang , Guangjie Zhu , Junxian Cheng , Xiangshun Li

Multivariate density estimation is a popular technique in statistics with wide applications including regression models allowing for heteroskedasticity in conditional variances. The estimation problems become more challenging when…

统计方法学 · 统计学 2018-08-15 Zhen Li , Lili Wu , Weilian Zhou , Sujit Ghosh

This two-part work considers the minimum means square error (MMSE) estimation problem for a high dimensional multi-layer generalized linear model (ML-GLM), which resembles a feed-forward fully connected deep learning network in that each of…

信息论 · 计算机科学 2020-07-21 Haochuan Zhang , Qiuyun Zou , Hongwen Yang

Log-linear models are arguably the most successful class of graphical models for large-scale applications because of their simplicity and tractability. Learning and inference with these models require calculating the partition function,…

机器学习 · 统计学 2017-03-16 Ryan Spring , Anshumali Shrivastava

Inspired by the combination of feedforward and iterative computations in the virtual cortex, and taking advantage of the ability of denoising autoencoders to estimate the score of a joint distribution, we propose a novel approach to…

计算机视觉与模式识别 · 计算机科学 2017-08-22 Adriana Romero , Michal Drozdzal , Akram Erraqabi , Simon Jégou , Yoshua Bengio

The so-called matrix-element method (MEM) has long been used successfully as a classification tool in particle physics searches. In the presence of invisible final state particles, the traditional MEM typically assigns probabilities to an…

高能物理 - 唯象学 · 物理学 2019-08-26 Stefan von Buddenbrock , Olivier Mattelaer , Michael Spannowsky

Modeling the chemical, electric, and thermal transport as well as phase transitions and the accompanying mesoscale microstructure evolution within a material in an electronic device setting involves the solution of partial differential…

数值分析 · 数学 2024-09-26 Xiaofeng Xu , Lian Zhang , Yin Shi , Long-Qing Chen , Jinchao Xu

Convex optimization over the spectrahedron, i.e., the set of all real $n\times n$ positive semidefinite matrices with unit trace, has important applications in machine learning, signal processing and statistics, mainly as a convex…

最优化与控制 · 数学 2022-11-01 Dan Garber , Atara Kaplan

Hamiltonian Monte Carlo (HMC) samples efficiently from high-dimensional posterior distributions with proposed parameter draws obtained by iterating on a discretized version of the Hamiltonian dynamics. The iterations make HMC…

统计计算 · 统计学 2019-05-03 Khue-Dung Dang , Matias Quiroz , Robert Kohn , Minh-Ngoc Tran , Mattias Villani

A novel and effective formulation that combines the eXtended IsoGeometric Approach (XIGA) and Higher-order Shear Deformation Theory (HSDT) is proposed to study the free vibration of cracked Functionally Graded Material (FGM) plates. Herein,…

计算工程、金融与科学 · 计算机科学 2014-03-04 Loc V. Tran , Vinh Phu Nguyen , M. Abdel Wahab , H. Nguyen-Xuan

Fine-Grained Visual Classification (FGVC) is an important computer vision problem that involves small diversity within the different classes, and often requires expert annotators to collect data. Utilizing this notion of small visual…

计算机视觉与模式识别 · 计算机科学 2018-09-24 Abhimanyu Dubey , Otkrist Gupta , Ramesh Raskar , Nikhil Naik

With recent advances in artificial intelligence, machine learning (ML) approaches have become an attractive tool in petroleum engineering, particularly for reservoir characterizations. A key reservoir property is hydrocarbon recovery factor…

We propose an approach based on function evaluations and Bayesian inference to extract higher-order differential information of objective functions {from a given ensemble of particles}. Pointwise evaluation $\{V(x^i)\}_i$ of some potential…

机器学习 · 统计学 2023-03-02 Claudia Schillings , Claudia Totzeck , Philipp Wacker

Despite phenomenal progress in recent years, state-of-the-art music separation systems produce source estimates with significant perceptual shortcomings, such as adding extraneous noise or removing harmonics. We propose a post-processing…

声音 · 计算机科学 2022-08-29 Noah Schaffer , Boaz Cogan , Ethan Manilow , Max Morrison , Prem Seetharaman , Bryan Pardo

In this paper, we develop a gradient recovery based linear (GRBL) finite element method (FEM) and a Hessian recovery based linear (HRBL) FEM for second order elliptic equations in non-divergence form. The elliptic equation is casted into a…

数值分析 · 数学 2022-11-09 Minqiang Xu , Runchang Lin , Qingsong Zou

We theoretically study high-harmonic generation (HHG) from transition metal elements Mn and Mn$^+$, using full-dimensional, all-electron, first-principles simulations. The HHG spectra calculated with the time-dependent complete-active-space…

原子物理 · 物理学 2019-06-26 Imam S. Wahyutama , Takeshi Sato , Kenichi L. Ishikawa

Measuring the expectation value of the molecular electronic Hamiltonian is one of the challenging parts of the variational quantum eigensolver. A widely used strategy is to express the Hamiltonian as a sum of measurable fragments using…

量子物理 · 物理学 2023-01-04 Seonghoon Choi , Ignacio Loaiza , Artur F. Izmaylov

Efficiency and reliability are both crucial for energy management, especially in multi-microgrid systems (MMSs) integrating intermittent and distributed renewable energy sources. This study investigates an economic and reliable energy…

系统与控制 · 电气工程与系统科学 2025-11-27 Junkai Hu , Li Xia

A computational/analytics framework for assessing the value of drill-hole information in ore grade estimation is described using Gaussian Process and statistics. A distinguishing feature is that it presents both a near-term and long-term…

计算工程、金融与科学 · 计算机科学 2026-05-26 Raymond Leung , Arman Melkumyan

Modern surveys with large sample sizes and growing mixed-type questionnaires require robust and scalable analysis methods. In this work, we consider recovering a mixed dataframe matrix, obtained by complex survey sampling, with entries…

统计方法学 · 统计学 2024-02-07 Xiaojun Mao , Hengfang Wang , Zhonglei Wang , Shu Yang