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Stock Prices as Janardan Galton Watson Process

Authors: Ali Saeb

arXiv

Janardan (1980) introduces a class of offspring distributions that sandwich between Bernoulli and Poisson. This paper extends the Janardan Galton Watson (JGW) branching process as a model of stock pri...

mental health psychology open access

Model Specification in Mixed-Effects Models: A Focus on Random Effects

Authors: Keith R. Lohse, Allan J. Kozlowski, Michael J. Strube

arXiv

Mixed-effect models are flexible tools for researchers in a myriad of fields, but that flexibility comes at the cost of complexity and if users are not careful in how their model is specified, they co...

mental health psychology open access

Predicting the power grid frequency of European islands

Authors: Thorbjørn Lund Onsaker, Heidi S. Nygård, Damià Gomila, Pere Colet, Ralf Mikut, Richard Jumar, Heiko Maass, Uwe Kühnapfel, Veit Hagenmeyer, Benjamin Schäfer

arXiv

Modelling, forecasting and overall understanding of the dynamics of the power grid and its frequency are essential for the safe operation of existing and future power grids. Much previous research was...

mental health psychology open access

Nonparametric augmented probability weighting with sparsity

Authors: Xin He, Xiaojun Mao, Zhonglei Wang

arXiv

Nonresponse frequently arises in practice, and simply ignoring it may lead to erroneous inference. Besides, the number of collected covariates may increase as the sample size in modern statistics, so...

mental health psychology open access

Understanding the impacts and the influences of Metro rail on urban environment Case studies and the Bengaluru scenario

Authors: R. Hemasree, C. V. Subramanian

arXiv

Urban sprawl is brought on by migration brought on by the new and exciting prospects in the cities. Cities expand rapidly, which leads to increased population growth and exceeding vehicle expansion. T...

mental health psychology open access

Hierarchical Graph Convolutional Network Built by Multiscale Atlases for Brain Disorder Diagnosis Using Functional Connectivity

Authors: Mianxin Liu, Han Zhang, Feng Shi, Dinggang Shen

arXiv

Functional connectivity network (FCN) data from functional magnetic resonance imaging (fMRI) is increasingly used for the diagnoses of brain disorders. However, state-of-the-art studies used to build...

mental health psychology open access

Sure Screening for Transelliptical Graphical Models

Authors: Yuxiang Xie, Chengchun Shi, Rui Song

arXiv

We propose a sure screening approach for recovering the structure of a transelliptical graphical model in the high dimensional setting. We estimate the partial correlation graph by thresholding the el...

mental health psychology open access

Using propensity scores for racial disparities analysis

Authors: Fan Li, Fan Li

arXiv

Propensity score plays a central role in causal inference, but its use is not limited to causal comparisons. As a covariate balancing tool, propensity score can be used for controlled descriptive comp...

mental health psychology open access

Use of Non-concurrent Common Control in Master Protocols in Oncology Trials: Report of an American Statistical Association Biopharmaceutical Section Open Forum Discussion

Authors: Rajeshwari Sridhara, Olga Marchenko, Qi Jiang, Richard Pazdur, Martin Posch, Scott Berry, Marc Theoret, Yuan Li Shen, Thomas Gwise, Lorenzo Hess, Andrew Raven, Khadija Rantell, Kit Roes, Richard Simon, Mary Redman, Yuan Ji, Cindy Lu

arXiv

This article summarizes the discussions from the American Statistical Association (ASA) Biopharmaceutical (BIOP) Section Open Forum that took place on December 10, 2020 and was organized by the ASA BI...

mental health psychology open access

Deterioration Prediction using Time-Series of Three Vital Signs and Current Clinical Features Amongst COVID-19 Patients

Authors: Sarmad Mehrdad, Farah E. Shamout, Yao Wang, S. Farokh Atashzar

arXiv

Unrecognized patient deterioration can lead to high morbidity and mortality. Most existing deterioration prediction models require a large number of clinical information, typically collected in hospit...

mental health psychology open access

Robust estimation of dependent competing risk model under interval monitoring and determining optimal inspection intervals

Authors: Shuvashree Mondal, Shanya Baghel

arXiv

Recently, a growing amount interest is quite evident in modelling dependent competing risks in life time prognosis problem. In this work, we propose to model the dependent competing risks by Marshal-O...

mental health psychology open access

Efficient Random Walk based Sampling with Inverse Degree

Authors: Xiao Qi

arXiv

Random walk sampling methods have been widely used in graph sampling in recent years, while it has bias towards higher degree nodes in the sample. To overcome this deficiency, classical methods such a...

mental health psychology open access

Task-dependent fractal patterns of information processing in working memory

Authors: Jeremi K. Ochab, Marcin Wątorek, Anna Ceglarek, Magdalena Fąfrowicz, Koryna Lewandowska, Tadeusz Marek, Barbara Sikora-Wachowicz, Paweł Oświęcimka

arXiv

We applied detrended fluctuation analysis, power spectral density, and eigenanalysis of detrended cross-correlations to investigate fMRI data representing a diurnal variation of working memory in four...

mental health psychology open access

On the Comparison between the Reliability of Units Produced by Different Production Lines

Authors: Rashad M. EL-Sagheer, Mahmoud A. W. Mahmoud, Mahmoud M. M. Mansour, Mohamed S. Aboshady

arXiv

The paper discusses how to evaluate the reliability of units produced by different production lines. The procedure is based on selecting independent random samples of units produced by different produ...

mental health psychology open access

Joint Stochastic Model for Electric Load, Solar and Wind Power at Asset Level and Monte Carlo Scenario GenerationRené Carmona \& Xinshuo Yang

Authors: Rene Carmona, Xinshuo Yang

arXiv

For the purpose of Monte Carlo scenario generation, we propose a graphical model for the joint distribution of wind power and electricity demand in a given region. To conform with the practice in the...

mental health psychology open access