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Scientists and practitioners increasingly rely on machine learning to model data and draw conclusions. Compared to statistical modeling approaches, machine learning makes fewer explicit assumptions about data structures, such as linearity.…

In the evolving field of psychopathology, the accurate assessment and forecasting of data derived from Ecological Momentary Assessment (EMA) is crucial. EMA offers contextually-rich psychopathological measurements over time, that…

Machine Learning · Computer Science 2024-03-29 Mandani Ntekouli , Gerasimos Spanakis , Lourens Waldorp , Anne Roefs

A serious barrier impedes the comparison between the theoretical prediction and the experimental observation in field emission because there is no way to measure the emission area. We introduce three dimensionless variables…

Materials Science · Physics 2018-08-29 Shi-Dong Liang

Computing partition function is the most important statistical inference task arising in applications of Graphical Models (GM). Since it is computationally intractable, approximate methods have been used to resolve the issue in practice,…

Machine Learning · Statistics 2017-09-13 Sungsoo Ahn , Michael Chertkov , Jinwoo Shin

The field enhancement factor at the emitter tip and its variation in a close neighbourhood determines the emitter current in a Fowler-Nordheim like formulation. For an axially symmetric emitter with a smooth tip, it is shown that the…

Applied Physics · Physics 2018-01-30 Debabrata Biswas , Gaurav Singh , Shreya G. Sarkar , Raghwendra Kumar

Non-negative Matrix Factorization (NMF) is an intensively used technique for obtaining parts-based, lower dimensional and non-negative representation. Researchers in biology, medicine, pharmacy and other fields often prefer NMF over other…

Machine Learning · Computer Science 2025-02-04 Matej Mihelčić , Pauli Miettinen

Studying the effects of air-pollution on health is a key area in environmental epidemiology. An accurate estimation of air-pollution effects requires spatio-temporally resolved datasets of air-pollution, especially, Fine Particulate Matter…

Applications · Statistics 2019-03-27 Ron Sarafian , Itai Kloog , Allan C. Just , Johnathan D. Rosenblatt

Recently, Iseni (arXiv:1709.03109v1) reported measurements and analysis of electric field (EF) strengths adjacent to propagating ionization waves (IWs) in non-thermal atmospheric pressure He plasma jets. We demonstrate that these…

Plasma Physics · Physics 2017-10-12 Eric Robert , Jean Michel Pouvesle , Xavier Damany , Sebastien Dozias , Thibault Darny

Field ion microscopy (FIM) allows to image individual surface atoms by exploiting the effect of an intense electric field. Widespread use of atomic resolution imaging by FIM has been hampered by a lack of efficient image processing/data…

The Gaussian graphical model (GGM) incorporates an undirected graph to represent the conditional dependence between variables, with the precision matrix encoding partial correlation between pair of variables given the others. To achieve…

Methodology · Statistics 2023-07-03 Yueqi Qian , Xianghong Hu , Can Yang

We propose a new "Poisson flow" generative model (PFGM) that maps a uniform distribution on a high-dimensional hemisphere into any data distribution. We interpret the data points as electrical charges on the $z=0$ hyperplane in a space…

Machine Learning · Computer Science 2022-10-21 Yilun Xu , Ziming Liu , Max Tegmark , Tommi Jaakkola

Accurately forecasting electricity price volatility is crucial for effective risk management and decision-making. Traditional forecasting models often fall short in capturing the complex, non-linear dynamics of electricity markets,…

Computational Engineering, Finance, and Science · Computer Science 2025-05-20 Haochen Xue , Chenghao Liu , Chong Zhang , Yuxuan Chen , Angxiao Zong , Zhaodong Wu , Yulong Li , Jiayi Liu , Kaiyu Liang , Zhixiang Lu , Ruobing Li , Jionglong Su

We explore theoretically the principles that govern photon emission from single-molecule conductors carrying electric currents between metallic contacts. The molecule and contacts are represented by a generic tight-binding model. The…

Condensed Matter · Physics 2009-11-07 John Buker , George Kirczenow

While classical or quantum interacting liquids become turbulent under sufficiently strong driving, it is not obvious what flow pattern an ideal quantum gas develops under similar conditions. Unlike classical noninteracting particles which…

Quantum Gases · Physics 2013-10-14 Marco Beria , Yasir Iqbal , Massimiliano Di Ventra , Markus Müller

The paper examines the Fractional Fourier Transform (FRFT) based technique as a tool for obtaining the probability density function and its derivatives, and mainly for fitting stochastic model with the fundamental probabilistic…

Methodology · Statistics 2022-05-06 A. H. Nzokem

Fermi's golden rule (FGR) serves as the basis for many expressions of spectroscopic observables and quantum transition rates. The utility of FGR has been demonstrated through decades of experimental confirmation. However, there still remain…

Quantum Physics · Physics 2025-12-30 Seogjoo J. Jang , Young Min Rhee

In the current era of rapidly growing digital data, evaluating the political bias and factuality of news outlets has become more important for seeking reliable information online. In this work, we study the classification problem of…

Machine Learning · Computer Science 2024-12-17 Muhammad Arslan Manzoor , Ruihong Zeng , Dilshod Azizov , Preslav Nakov , Shangsong Liang

The uniform electron gas placed between two reservoirs is used as a model system for molecular junctions under an external bias. The energetics of the electron gas are calculated by generalizing the Thomas-Fermi-Dirac (TFD) model to…

Mesoscale and Nanoscale Physics · Physics 2013-11-25 Chun Zhang

Forecasters often use common information and hence make common mistakes. We propose a new approach, Factor Graphical Model (FGM), to forecast combinations that separates idiosyncratic forecast errors from the common errors. FGM exploits the…

Econometrics · Economics 2021-05-19 Tae-Hwy Lee , Ekaterina Seregina

It is common practice to extract field enhancement factor from the slope of FN plot. Many experimentalists working on field electron emission had reported multi-(linear segment) FN plots, which can be divided into several (usually two)…

Materials Science · Physics 2012-11-20 Weiliang Wang , Zhibing Li