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The problem of quickest detection of an anomalous process among M processes is considered. At each time, a subset of the processes can be observed, and the observations from each chosen process follow two different distributions, depending…

信息论 · 计算机科学 2014-10-09 Kobi Cohen , Qing Zhao

In this paper, we propose novel, fully Bayesian non-parametric tests for one-sample and two-sample multivariate location problems. We model the underlying distribution using a Dirichlet process prior, and develop a testing procedure based…

统计理论 · 数学 2021-08-03 Indrabati Bhattacharya , Subhashis Ghosal

In this paper, we treat an asymptotic hypothesis testing (or state discrimination with asymmetric treatment of errors) between an arbitrary fixed bipartite pure state and the completely mixed state by one-way LOCC, two-way LOCC, and…

量子物理 · 物理学 2020-10-06 Masaki Owari , Masahito Hayashi

The problem of joint sequential detection and isolation is considered in the context of multiple, not necessarily independent, data streams. A multiple testing framework is proposed, where each hypothesis corresponds to a different subset…

统计理论 · 数学 2022-07-04 Anamitra Chaudhuri , Georgios Fellouris

How many free variables do we really need to build a credible model of a physical system? Currently there is no systematic approach; we appeal to some physical principles, tune free variables by comparing with canonical cases, and hope our…

信号处理 · 电气工程与系统科学 2020-01-07 Arthur Young , Andrew Lawrie

The Huge Object model is a distribution testing model in which we are given access to independent samples from an unknown distribution over the set of strings $\{0,1\}^n$, but are only allowed to query a few bits from the samples. We…

数据结构与算法 · 计算机科学 2024-09-18 Tomer Adar , Eldar Fischer , Amit Levi

Under some mild Markov assumptions it is shown that the problem of designing optimal sequential tests for two simple hypotheses can be formulated as a linear program. The result is derived by investigating the Lagrangian dual of the…

统计理论 · 数学 2015-02-24 Michael Fauss , Abdelhak M. Zoubir

This study develops a framework for testing hypotheses on structural parameters in incomplete models. Such models make set-valued predictions and hence do not generally yield a unique likelihood function. The model structure, however,…

计量经济学 · 经济学 2019-12-03 Hiroaki Kaido , Yi Zhang

Some challenging problems in tracking multiple objects include the time-dependent cardinality, unordered measurements and object parameter labeling. In this paper, we employ Bayesian Bayesian nonparametric methods to address these…

机器学习 · 计算机科学 2020-04-24 Bahman Moraffah , Antonia Papndreou-Suppopola

Contemporary machine learning applications often involve classification tasks with many classes. Despite their extensive use, a precise understanding of the statistical properties and behavior of classification algorithms is still missing,…

机器学习 · 计算机科学 2020-11-17 Christos Thrampoulidis , Samet Oymak , Mahdi Soltanolkotabi

We present a new perspective on loss minimization and the recent notion of Omniprediction through the lens of Outcome Indistingusihability. For a collection of losses and hypothesis class, omniprediction requires that a predictor provide a…

机器学习 · 计算机科学 2022-12-09 Parikshit Gopalan , Lunjia Hu , Michael P. Kim , Omer Reingold , Udi Wieder

The object of study is the problem of testing for uniformity of the multinomial distribution. We consider tests based on symmetric statistics, defined as the sum of some function of cell-frequencies. Mainly, attention is focused on the…

统计理论 · 数学 2022-09-12 Sherzod M. Mirakhmedov

Large vision language models (LVLMs) often suffer from object hallucination, producing objects not present in the given images. While current benchmarks for object hallucination primarily concentrate on the presence of a single object class…

计算机视觉与模式识别 · 计算机科学 2024-11-04 Xuweiyi Chen , Ziqiao Ma , Xuejun Zhang , Sihan Xu , Shengyi Qian , Jianing Yang , David F. Fouhey , Joyce Chai

The problem of hypothesis testing is examined from both the historical and Bayesian points of view in the case that sampling is from an underlying joint probability distribution and the hypotheses tested for are those of independence and…

comp-gas · 物理学 2008-02-03 David Wolf

Although the assumption of elliptical symmetry is quite common in multivariate analysis and widespread in a number of applications, the problem of testing the null hypothesis of ellipticity so far has not been addressed in a fully…

统计方法学 · 统计学 2019-11-20 Sladana Babic , Laetitia Gelbgras , Marc Hallin , Christophe Ley

This paper studies the problem of discriminating two multivariate Gaussian distributions in a distributed manner. Specifically, it characterizes in a special case the optimal typeII error exponent as a function of the available…

信息论 · 计算机科学 2020-05-15 Pierre Escamilla , Abdellatif Zaidi , Michèle Wigger

Recently Liu and Wang derived the likelihood ratio test (LRT) statistic and its asymptotic distribution for testing equality of two multinomial distributions vs. the alternative that the second distribution is larger in terms of increasing…

统计理论 · 数学 2007-06-13 Arthur Cohen , John Kolassa , Harold Sackrowitz

Anomaly detection in large populations is a challenging but highly relevant problem. The problem is essentially a multi-hypothesis problem, with a hypothesis for every division of the systems into normal and anomal systems. The number of…

机器学习 · 计算机科学 2013-09-24 Henrik Ohlsson , Tianshi Chen , Sina Khoshfetrat Pakazad , Lennart Ljung , S. Shankar Sastry

When we use the normal mixture model, the optimal number of the components describing the data should be determined. Testing homogeneity is good for this purpose; however, to construct its theory is challenging, since the test statistic…

统计理论 · 数学 2019-12-24 Natsuki Kariya , Sumio Watanabe

The Rasch model has been widely used to analyse item response data in psychometrics and educational assessments. When the number of individuals and items are large, it may be impractical to provide all possible responses. It is desirable to…

统计理论 · 数学 2025-01-15 Pai Peng , Lianqiang Qu , Qiuping Wang , Shufang Wang , Ting Yan