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Accurate characterization of microcalcifications (MCs) in 2D full-field digital screening mammography is a necessary step towards reducing diagnostic uncertainty associated with the callback of women with suspicious MCs. Quantitative…

图像与视频处理 · 电气工程与系统科学 2021-02-02 Chrysostomos Marasinou , Bo Li , Jeremy Paige , Akinyinka Omigbodun , Noor Nakhaei , Anne Hoyt , William Hsu

The recent emergence of deep learning has led to a great deal of work on designing supervised deep semantic segmentation algorithms. As in many tasks sufficient pixel-level labels are very difficult to obtain, we propose a method which…

计算机视觉与模式识别 · 计算机科学 2024-04-19 Matthias Schwab , Agnes Mayr , Markus Haltmeier

We consider the problem of covariance matrix estimation in the presence of latent variables. Under suitable conditions, it is possible to learn the marginal covariance matrix of the observed variables via a tractable convex program, where…

机器学习 · 统计学 2011-10-17 Gui-Bo Ye , Yuanfeng Wang , Yifei Chen , Xiaohui Xie

High-temperature electrolysis (HTE) is a promising technology for achieving high-efficiency power-to-gas, which mitigates the renewable curtailment by transforming wind or solar energy into fuels. Different from low-temperature…

应用物理 · 物理学 2018-10-17 Xuetao Xing , Jin Lin , Yonghua Song , Qiang Hu , You Zhou , Shujun Mu

We introduce a method to quantify the quality-of-fit between data and observables depending on the large scale Galactic magnetic field. We combine WMAP5 polarized synchrotron data and Rotation Measures of extragalactic sources in a joint…

星系天体物理 · 物理学 2009-07-22 Ronnie Jansson , Glennys R. Farrar , Andre H. Waelkens , Torsten A. Ensslin

In this paper, a non-uniform rational B-spline based iso-geometric finite element method is used to study the static and dynamic characteristics of functionally graded material (FGM) plates. The material properties are assumed to be graded…

The high cost associated with the evaluation of Hartree-Fock exchange (HFX) makes hybrid functionals computationally challenging for large systems. In this work, we present an efficient way to accelerate HFX calculations with numerical…

计算物理 · 物理学 2020-09-09 Xinming Qin , Jie Liu , Wei Hu , Jinlong Yang

Being able to efficiently obtain an accurate estimate of the failure probability of SRAM components has become a central issue as model circuits shrink their scale to submicrometer with advanced technology nodes. In this work, we revisit…

机器学习 · 计算机科学 2023-08-01 Yanfang Liu , Guohao Dai , Wei W. Xing

I propose a general quantitative framework to evaluate the quality, track the historical development, and guide future optimization of photovoltaic (PV) absorbers at any development level, including both experimentally synthesized and…

材料科学 · 物理学 2024-04-24 Andrea Crovetto

In this paper, we build and explore supervised learning models of ferromagnetic system behavior, using Monte-Carlo sampling of the spin configuration space generated by the 2D Ising model. Given the enormous size of the space of all…

统计力学 · 物理学 2017-09-06 Nataliya Portman , Isaac Tamblyn

We consider the problem of estimating the partition function of the ferromagnetic Ising model in a consistent external magnetic field. The estimation is done via importance sampling in the dual of the Forney factor graph representing the…

统计计算 · 统计学 2017-01-27 Mehdi Molkaraie

Energy-based models (EBMs) offer a flexible framework for parameterizing probability distributions using neural networks. However, learning EBMs by exact maximum likelihood estimation (MLE) is generally intractable, due to the need to…

机器学习 · 计算机科学 2025-08-20 Michael E. Sander , Vincent Roulet , Tianlin Liu , Mathieu Blondel

By Using the variational Monte Carlo (VMC) method, we calculate the 1s{\sigma}_g state energies, the dissociation energies and the binding energies of the hydrogen molecule and its molecular ion in the presence of an aligned magnetic field…

原子物理 · 物理学 2016-06-29 S. B. Doma , M. Abu-Shady , F. N. El-Gamma , A. A. Amer

We investigate a general channel estimation problem in the massive multiple-input multiple-output (MIMO) system which employs the hybrid analog/digital precoding structure with limited radio-frequency (RF) chains. By properly designing RF…

信息论 · 计算机科学 2017-12-27 Leyuan Pan , Le Liang , Wei Xu , Xiaodai Dong

Dielectric microstructures have generated much interest in recent years as a means of accelerating charged particles when powered by solid state lasers. The acceleration gradient (or particle energy gain per unit length) is an important…

光学 · 物理学 2017-09-14 Tyler Hughes , Georgios Veronis , Kent Wootton , R. Joel England , Shanhui Fan

There is a need for numerical models capable of predicting local accumulation of hydrogen near stress concentrators and crack tips to prevent and mitigate hydrogen assisted fracture in steels. The experimental characterisation of trapping…

应用物理 · 物理学 2020-10-27 A. Díaz , A. Zafra , E. Martínez-Pañeda , J. M. Alegre , J. Belzunce , I. I. Cuesta

This paper proposes a hybrid learning and optimization framework for mobile manipulators for complex and physically interactive tasks. The framework exploits an admittance-type physical interface to obtain intuitive and simplified human…

机器人学 · 计算机科学 2022-08-02 Jianzhuang Zhao , Alberto Giammarino , Edoardo Lamon , Juan M. Gandarias , Elena De Momi , Arash Ajoudani

Engineering problems often involve data sources of variable fidelity with different costs of obtaining an observation. In particular, one can use both a cheap low fidelity function (e.g. a computational experiment with a CFD code) and an…

机器学习 · 统计学 2017-12-19 Alexey Zaytsev , Evgeny Burnaev

We present quantitative means for assessing the numerical accuracy of static magnetic field calculations in finite-element models. Our calculations use the three-dimensional Opera simulation software suite of Dassault Syst`emes. Our need to…

加速器物理 · 物理学 2021-06-03 J. A. Crittenden

In the field of statistical learning and data analysis, estimating precision matrices (i.e., the inverse of covariance matrices) is a critical task, particularly for understanding dependency structures among variables. However, traditional…

统计方法学 · 统计学 2026-05-15 Zhongfeng Qin , Hao Xu , Wenhao Cui , Wan Tian