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Geological parameterization enables the representation of geomodels in terms of a relatively small set of variables. Parameterization is therefore very useful in the context of data assimilation and uncertainty quantification. In this…

计算机视觉与模式识别 · 计算机科学 2021-03-17 Yimin Liu , Louis J. Durlofsky

Through the Bayesian lens of data assimilation, uncertainty on model parameters is traditionally quantified through the posterior covariance matrix. However, in modern settings involving high-dimensional and computationally expensive…

统计计算 · 统计学 2023-11-16 Michael Stanley , Mikael Kuusela , Brendan Byrne , Junjie Liu

Sedimentation is a crucial phenomenon in recovering water from slurries by separating solid-liquid. Thickeners and sedimentation columns are equipments widely used in the process industry to reclaim water from process slurries. This…

系统与控制 · 电气工程与系统科学 2024-07-02 Jesus-Pablo Toledo-Zucco , Daniel Sbarbaro , Joao Manoel Gomes da Silva

Recently, there has been an interest in the incorporation of buckypaper (BP), or carbon nanotube (CNT) membranes, in composite laminates. Research has shown that using BP in contrast to nanotube doped resin enables the introduction of a…

机器学习 · 计算机科学 2025-03-14 Kartik Tripathi , Mohamed H. Hamza , Aditi Chattopadhyay , Todd C. Henry , Asha Hall

We present a theoretical model and simulation for the formation dynamics of diverse texture patterns that emerge spontaneously or self-organize during phase inversion processes of fresh cream by mechanical whipping. The results suggest that…

软凝聚态物质 · 物理学 2025-04-02 Erika Nozawa , Tetsuo Deguchi

In this work, we contribute to the broader understanding of inverse problems by introducing a versatile multiscale modeling framework tailored to the challenges of sediment concentration estimation. Specifically, we propose a novel approach…

数值分析 · 数学 2025-03-14 Jiwei Li , Lingyun Qiu , Zhongjing Wang , Hui Yu , Siqin Zheng

A constrained multivariate linear model is a multivariate linear model with the columns of its coefficient matrix constrained to lie in a known subspace. This class of models includes those typically used to study growth curves and…

统计方法学 · 统计学 2021-01-05 Dennis Cook , Liliana Forzani , Lan Liu

High-pressure crystal structure prediction (CSP) underpins advances in condensed matter physics, planetary science, and materials discovery. Yet, most large atomistic models are trained on near-ambient, equilibrium data, leading to degraded…

材料科学 · 物理学 2025-09-15 Yinan Wang , Xiaoyang Wang , Zhenyu Wang , Jing Wu , Jian Lv , Han Wang

Current and future Cosmic Microwave Background (CMB) experiments aim to achieve high-precision reconstruction of the CMB polarization signal, with the most ambitious objective being the detection of primordial $B$ modes sourced by cosmic…

宇宙学与河外天体物理 · 物理学 2025-10-28 Alessandro Carones

Mixed-paradigm process models integrate strengths of procedural and declarative representations like Petri nets and Declare. They are specifically interesting for process mining because they allow capturing complex behaviour in a compact…

形式语言与自动机理论 · 计算机科学 2020-11-30 Boudewijn van Dongen , Johannes De Smedt , Claudio Di Ciccio , Jan Mendling

Parameters in climate models are usually calibrated manually, exploiting only small subsets of the available data. This precludes both optimal calibration and quantification of uncertainties. Traditional Bayesian calibration methods that…

Hyperparameter tuning of multi-stage pipelines introduces a significant computational burden. Motivated by the observation that work can be reused across pipelines if the intermediate computations are the same, we propose a pipeline-aware…

机器学习 · 计算机科学 2019-03-14 Liam Li , Evan Sparks , Kevin Jamieson , Ameet Talwalkar

Understanding the microstuctural evolution during the sintering process is of high relevance as it is a key part in many industrial manufacturing processes. Simulations are one avenue to achieve this understanding, especially field-resolved…

材料科学 · 物理学 2023-05-17 Marco Seiz , Henrik Hierl , Britta Nestler

We demonstrate that hierarchical backmapping strategies incorporating generic blob-based models can equilibrate melts of high-molecular-weight polymers, described with chemically specific, atomistic, models. The central idea behind these…

Predicting the evolving microstructure of hydrating cement is essential for understanding and modeling its mechanical property development. Physics-based continuum approaches offer a rigorous framework for capturing the thermodynamics of…

材料科学 · 物理学 2026-03-31 Alexandre Sac-Morane , Katerina Ioannidou , Manolis Veveakis , Hadrien Rattez

Nested simulation is a natural approach to tackle nested estimation problems in operations research and financial engineering. The outer-level simulation generates outer scenarios and the inner-level simulations are run in each outer…

风险管理 · 定量金融 2022-03-31 Kun Zhang , Ben Mingbin Feng , Guangwu Liu , Shiyu Wang

Confidence calibration of classification models is a technique to estimate the true posterior probability of the predicted class, which is critical for ensuring reliable decision-making in practical applications. Existing confidence…

统计方法学 · 统计学 2025-02-19 Jinzong Dong , Zhaohui Jiang , Dong Pan , Haoyang Yu

For both isothermal and thermal petroleum reservoir simulation, the Constrained Pressure Residual (CPR) method is the industry-standard preconditioner. This method is a two-stage process involving the solution of a restricted pressure…

数值分析 · 数学 2020-05-28 Thomas Roy , Tom B Jönsthövel , Christopher Lemon , Andrew J Wathen

Blending biomass materials of different physical or chemical properties provides an opportunity to adjust the quality of the feedstock to meet the specifications of the conversion platform. We propose a model which identifies the right mix…

最优化与控制 · 数学 2020-06-15 Sandra D. Eksioglu , Berkay Gulcan , Mohammad Roni , Scott Mason

Process mining provides methods to analyse event logs generated by information systems during the execution of processes. It thereby supports the design, validation, and execution of processes in domains ranging from healthcare, through…

数据库 · 计算机科学 2024-02-06 Mehdi Acheli , Daniela Grigori , Matthias Weidlich