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Measurements of systems taken along a continuous functional dimension, such as time or space, are ubiquitous in many fields, from the physical and biological sciences to economics and engineering.Such measurements can be viewed as…

We introduce a general non-parametric independence test between right-censored survival times and covariates, which may be multivariate. Our test statistic has a dual interpretation, first in terms of the supremum of a potentially infinite…

统计方法学 · 统计学 2021-11-23 Tamara Fernandez , Arthur Gretton , David Rindt , Dino Sejdinovic

We investigate the use of a non-parametric independence measure, the Hilbert-Schmidt Independence Criterion (HSIC), as a loss-function for learning robust regression and classification models. This loss-function encourages learning models…

机器学习 · 计算机科学 2020-07-14 Daniel Greenfeld , Uri Shalit

Measuring conditional independence is one of the important tasks in statistical inference and is fundamental in causal discovery, feature selection, dimensionality reduction, Bayesian network learning, and others. In this work, we explore…

统计理论 · 数学 2020-08-18 Tianhong Sheng , Bharath K. Sriperumbudur

Multivariate time series data that capture the temporal evolution of interconnected systems are ubiquitous in diverse areas. Understanding the complex relationships and potential dependencies among co-observed variables is crucial for the…

统计方法学 · 统计学 2023-11-03 Zhaolu Liu , Robert L. Peach , Felix Laumann , Sara Vallejo Mengod , Mauricio Barahona

Two-sample and independence tests with the kernel-based MMD and HSIC have shown remarkable results on i.i.d. data and stationary random processes. However, these statistics are not directly applicable to non-stationary random processes, a…

统计方法学 · 统计学 2021-01-05 Felix Laumann , Julius von Kügelgen , Mauricio Barahona

Representations of probability measures in reproducing kernel Hilbert spaces provide a flexible framework for fully nonparametric hypothesis tests of independence, which can capture any type of departure from independence, including…

统计计算 · 统计学 2018-06-11 Qinyi Zhang , Sarah Filippi , Arthur Gretton , Dino Sejdinovic

Many tools exist to detect dependence between random variables, a core question across a wide range of machine learning, statistical, and scientific endeavors. Although several statistical tests guarantee eventual detection of any…

机器学习 · 统计学 2026-03-23 Nathaniel Xu , Feng Liu , Danica J. Sutherland

This paper introduces Kernel-based Information Criterion (KIC) for model selection in regression analysis. The novel kernel-based complexity measure in KIC efficiently computes the interdependency between parameters of the model using a…

机器学习 · 统计学 2014-12-16 Somayeh Danafar , Kenji Fukumizu , Faustino Gomez

In this paper, we consider the nonparametric least square regression in a Reproducing Kernel Hilbert Space (RKHS). We propose a new randomized algorithm that has optimal generalization error bounds with respect to the square loss, closing a…

机器学习 · 计算机科学 2019-05-28 Kwang-Sung Jun , Ashok Cutkosky , Francesco Orabona

A new computationally efficient dependence measure, and an adaptive statistical test of independence, are proposed. The dependence measure is the difference between analytic embeddings of the joint distribution and the product of the…

机器学习 · 统计学 2016-10-18 Wittawat Jitkrittum , Zoltan Szabo , Arthur Gretton

In this paper, we aim to perform sensitivity analysis of set-valued models and, in particular, to quantify the impact of uncertain inputs on feasible sets, which are key elements in solving a robust optimization problem under constraints.…

We propose a series of computationally efficient nonparametric tests for the two-sample, independence, and goodness-of-fit problems, using the Maximum Mean Discrepancy (MMD), Hilbert Schmidt Independence Criterion (HSIC), and Kernel Stein…

机器学习 · 统计学 2023-01-27 Antonin Schrab , Ilmun Kim , Benjamin Guedj , Arthur Gretton

The Hilbert--Schmidt Independence Criterion (HSIC) is a popular measure of the dependency between two random variables. The statistic dHSIC is an extension of HSIC that can be used to test joint independence of $d$ random variables. Such…

统计理论 · 数学 2020-05-15 David Rindt , Dino Sejdinovic , David Steinsaltz

We describe a novel non-parametric statistical hypothesis test of relative dependence between a source variable and two candidate target variables. Such a test enables us to determine whether one source variable is significantly more…

机器学习 · 统计学 2015-05-28 Wacha Bounliphone , Arthur Gretton , Arthur Tenenhaus , Matthew Blaschko

Hilbert-Schmidt Independence Criterion (HSIC) has recently been used in the field of single-index models to estimate the directions. Compared with some other well-established methods, it requires relatively weaker conditions. However, its…

统计方法学 · 统计学 2021-05-19 Runxiong Wu , Chang Deng , Xin Chen

The problem of establishing out-of-sample bounds for the values of an unkonwn ground-truth function is considered. Kernels and their associated Hilbert spaces are the main formalism employed herein along with an observational model where…

机器学习 · 计算机科学 2022-09-13 Paul Scharnhorst , Emilio T. Maddalena , Yuning Jiang , Colin N. Jones

Distributed machine learning systems have been receiving increasing attentions for their efficiency to process large scale data. Many distributed frameworks have been proposed for different machine learning tasks. In this paper, we study…

机器学习 · 计算机科学 2020-07-01 Hongwei Sun , Qiang Wu

We propose a nonparametric test of independence, termed optHSIC, between a covariate and a right-censored lifetime. Because the presence of censoring creates a challenge in applying the standard permutation-based testing approaches, we use…

统计理论 · 数学 2020-11-03 David Rindt , Dino Sejdinovic , David Steinsaltz

Kernel-based modal statistical methods include mode estimation, regression, and clustering. Estimation accuracy of these methods depends on the kernel used as well as the bandwidth. We study effect of the selection of the kernel function to…

机器学习 · 统计学 2023-04-21 Ryoya Yamasaki , Toshiyuki Tanaka