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Power analyses are an important aspect of experimental design, because they help determine how experiments are implemented in practice. It is common to specify a desired level of power and compute the sample size necessary to obtain that…

统计方法学 · 统计学 2022-12-09 Zach Branson , Xinran Li , Peng Ding

Energy-based models are a simple yet powerful class of probabilistic models, but their widespread adoption has been limited by the computational burden of training them. We propose a novel loss function called Energy Discrepancy (ED) which…

In this paper, I propose a general procedure for multivariate distribution-free nonparametric testing derived from the concept of ranks that are based upon measure transportation in the context of multiple change point analysis. I will use…

其他统计学 · 统计学 2021-08-30 Amanda Ng

Two-sample inference for the difference of population means typically relies upon a Central Limit Theorem approximation. When data are drawn from a Negative Binomial distribution, previous work of Shilane et al. (2010) showed that a Normal…

统计方法学 · 统计学 2012-03-06 David Shilane , Derek Bean

We study the problem of testing the equivalence of functional parameters (such as the mean or variance function) in the two sample functional data problem. In contrast to previous work, which reduces the functional problem to a multiple…

统计理论 · 数学 2020-04-28 Holger Dette , Kevin Kokot

Two-sample network hypothesis testing is an important inference task with applications across diverse fields such as medicine, neuroscience, and sociology. Many of these testing methodologies operate under the implicit assumption that the…

统计方法学 · 统计学 2024-05-28 Ayushi Saxena , Vince Lyzinski

Imagine that you could calculate of posttest probabilities, i.e. Bayes theorem with simple addition. This is possible if we stop thinking of probabilities as ranging from 0 to 1.0. There is a naturally occurring linear probability space…

其他统计学 · 统计学 2019-04-03 Christopher M Rembold

We propose a framework for analyzing and comparing distributions, allowing us to design statistical tests to determine if two samples are drawn from different distributions. Our test statistic is the largest difference in expectations over…

机器学习 · 计算机科学 2008-05-16 Arthur Gretton , Karsten Borgwardt , Malte J. Rasch , Bernhard Scholkopf , Alexander J. Smola

A model is proposed for the statistical analysis of arbitrary-strength quantum measurements, based on a picture of "sampling weak values" from different configurations of the system. The model is comprised of two elements: a "local weak…

量子物理 · 物理学 2007-05-23 Alonso Botero

Many enhanced sampling techniques rely on the identification of a number of collective variables that describe all the slow modes of the system. By constructing a bias potential in this reduced space one is then able to sample efficiently…

计算物理 · 物理学 2019-03-05 Michele Invernizzi , Michele Parrinello

Two-sample hypothesis testing for random graphs arises naturally in neuroscience, social networks, and machine learning. In this paper, we consider a semiparametric problem of two-sample hypothesis testing for a class of latent position…

统计方法学 · 统计学 2015-06-19 Minh Tang , Avanti Athreya , Daniel L. Sussman , Vince Lyzinski , Carey E. Priebe

We introduce and study the notion of the energy of a smooth metric measure space, which includes as special cases the Yamabe constant and Perelman's $\nu$-entropy. We then investigate some properties the energy shares with these constants,…

微分几何 · 数学 2012-05-04 Jeffrey S. Case

The two-sample test is a fundamental problem in statistics with a wide range of applications. In the realm of high-dimensional data, nonparametric methods have gained prominence due to their flexibility and minimal distributional…

统计方法学 · 统计学 2024-12-24 Zexi Cai , Wenbo Fei , Doudou Zhou

In scientific research, many hypotheses relate to the comparison of two independent groups. Usually, it is of interest to use a design (i.e., the allocation of sample sizes $m$ and $n$ for fixed $N = m + n$) that maximizes the power of the…

统计方法学 · 统计学 2022-11-24 Paul-Christian Bürkner , Philipp Doebler , Heinz Holling

Testing equality of two multivariate distributions is a classical problem for which many non-parametric tests have been proposed over the years. Most of the popular two-sample tests, which are asymptotically distribution-free, are based…

统计理论 · 数学 2019-04-17 Bhaswar B. Bhattacharya

In many application domains, time series are monitored to detect extreme events like technical faults, natural disasters, or disease outbreaks. Unfortunately, it is often non-trivial to select both a time series that is informative about…

统计方法学 · 统计学 2020-05-01 Erik Scharwächter , Emmanuel Müller

The strongest evidence for dark energy comes presently from geometric techniques such as the supernova distance-redshift relation. By combining the measured expansion history with the Friedmann equation one determines the energy density and…

天体物理学 · 物理学 2008-11-26 Edmund Bertschinger

We study the problem of two-sample comparison with categorical data when the contingency table is sparsely populated. In modern applications, the number of categories is often comparable to the sample size, causing existing methods to have…

统计方法学 · 统计学 2014-08-14 Hao Chen , Nancy R. Zhang

Kernel two-sample tests have been widely used for multivariate data to test equality of distributions. However, existing tests based on mapping distributions into a reproducing kernel Hilbert space mainly target specific alternatives and do…

统计方法学 · 统计学 2023-11-21 Hoseung Song , Hao Chen

Measurements of a weighted energy density average taken in the vacuum state of a conformal field theory in $1+1$ dimensions are randomly distributed with vanishing expectation value. The probability distribution is computed in closed form…

高能物理 - 理论 · 物理学 2020-01-29 Matthew C. Anthony , Christopher J. Fewster