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This paper introduces chi-square goodness-of-fit tests to check for conditional distribution model specification. The data is cross-classified according to the Rosenblatt transform of the dependent variable and the explanatory variables,…

计量经济学 · 经济学 2023-09-25 Miguel A. Delgado , Julius Vainora

This paper lays out a principled approach to compare copula forecasts via strictly consistent scores. We first establish the negative result that, in general, copulas fail to be elicitable, implying that copula predictions cannot sensibly…

统计方法学 · 统计学 2026-02-11 Tobias Fissler , Yannick Hoga

So-called linear rank statistics provide a means for distribution-free (even in finite samples), yet highly flexible, two-sample testing in the setting of univariate random variables. Their flexibility derives from a choice of weights that…

统计方法学 · 统计学 2023-10-03 Dan D. Erdmann-Pham

Given a sample of independent and identically distributed random variables, a novel nonparametric maximum entropy method is presented to estimate the underlying continuous univariate probability density function (pdf). Estimates are found…

概率论 · 数学 2016-06-30 Jenny Farmer , Donald J. Jacobs

Inverse classification, the process of making meaningful perturbations to a test point such that it is more likely to have a desired classification, has previously been addressed using data from a single static point in time. Such an…

机器学习 · 计算机科学 2016-11-15 Michael T. Lash , W. Nick Street

Scaling-invariant functions preserve the order of points when the points are scaled by the same positive scalar (with respect to a unique reference point). Composites of strictly monotonic functions with positively homogeneous functions are…

最优化与控制 · 数学 2021-09-09 Cheikh Touré , Armand Gissler , Anne Auger , Nikolaus Hansen

While scale-invariant modeling has substantially boosted the performance of visual recognition tasks, it remains largely under-explored in deep networks based image restoration. Naively applying those scale-invariant techniques (e.g.…

计算机视觉与模式识别 · 计算机科学 2019-12-20 Yuchen Fan , Jiahui Yu , Ding Liu , Thomas S. Huang

The general relationship between an arbitrary frequency distribution and the expectation value of the frequency distributions of its samples is discussed. A wide set of measurable quantities ("invariant moments") whose expectation value…

数据分析、统计与概率 · 物理学 2015-06-15 Paolo Rossi

Motivated by the inapproximability of reconfiguration problems, we present a new PCP-type characterization of PSPACE, which we call a probabilistically checkable reconfiguration proof (PCRP): Any PSPACE computation can be encoded into an…

计算复杂性 · 计算机科学 2025-01-08 Shuichi Hirahara , Naoto Ohsaka

A number of biomedical problems require performing many hypothesis tests, with an attendant need to apply stringent thresholds. Often the data take the form of a series of predictor vectors, each of which must be compared with a single…

统计方法学 · 统计学 2014-05-13 Yi-Hui Zhou , Fred Wright

The evaluation of probabilistic forecasts plays a central role both in the interpretation and in the use of forecast systems and their development. Probabilistic scores (scoring rules) provide statistical measures to assess the quality of…

统计方法学 · 统计学 2020-12-24 Hailiang Du

The translation equivariance of convolutions can make convolutional neural networks translation equivariant or invariant. Equivariance to other transformations (e.g. rotations, affine transformations, scalings) may also be desirable as soon…

信号处理 · 电气工程与系统科学 2021-05-05 Mateus Sangalli , Samy Blusseau , Santiago Velasco-Forero , Jesus Angulo

We consider component-wise equivariant estimation of order restricted location/scale parameters of a general bivariate distribution under quite general conditions on underlying distributions and the loss function. This paper unifies various…

统计理论 · 数学 2022-07-05 Naresh Garg , Neeraj Misra

This article proposes a bivariate Simplex distribution for modeling continuous outcomes constrained to the interval $(0,1)$, which can represent proportions, rates, or indices. We derive analytical expressions to calculate the dependence…

统计方法学 · 统计学 2025-04-03 Emerson Amaral , Lucas S. Vieira , Lizandra C. Fabio , Vanessa Barros , Jalmar M. F. Carrasco

A new class of general exponential ranking models is introduced which we label angle-based models for ranking data. A consensus score vector is assumed, which assigns scores to a set of items, where the scores reflect a consensus view of…

统计方法学 · 统计学 2017-12-27 Hang Xu , Mayer Alvo , Philip L. H. Yu

The rank correlation coefficients and the ranked-based statistical tests (as a subset of non-parametric techniques) might be misleading when they are applied to subjectively collected opinion scores. Those techniques assume that the data is…

多媒体 · 计算机科学 2020-10-01 Babak Naderi , Sebastian Möller

Proposed in Hyv\"arinen (2005), score matching is a parameter estimation procedure that does not require computation of distributional normalizing constants. In this work we utilize the geometric median of means to develop a robust score…

机器学习 · 统计学 2025-06-23 Richard Schwank , Andrew McCormack , Mathias Drton

We provide a general mathematical framework for selective inference with supervised model selection procedures characterized by quadratic forms in the outcome variable. Forward stepwise with groups of variables is an important special case…

统计方法学 · 统计学 2015-11-05 Joshua R. Loftus , Jonathan E. Taylor

Conformal prediction is a useful and versatile alternative to model calibration in machine learning classification. It replaces single-class prediction with prediction sets, guaranteeing that the \textit{a priori} probability of the…

机器学习 · 计算机科学 2026-05-26 Sol Erika Boman

Conformal prediction is a powerful framework for constructing prediction sets with valid coverage guarantees in multi-class classification. However, existing methods often rely on a single score function, which can limit their efficiency…

机器学习 · 统计学 2025-03-05 Rui Luo , Zhixin Zhou