<p>The purpose of this paper is to establish a connection between stochastic extreme value theory and certain aspects of topological data analysis. We propose two assumptions analogous to Leadbetter’s conditions (known as Conditions <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\varvec{D(u_n)}\)</EquationSource> </InlineEquation> and <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\varvec{D'(u_n)}\)</EquationSource> </InlineEquation>), which are widely used in extreme value theory. Under these assumptions, we derive rates of convergence, in expectation, for the Hausdorff metric between a finite set of stationary dependent random variables and their common support, assumed to be a compact subset of <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(\mathbb {R}^{\varvec{d}}\)</EquationSource> </InlineEquation>. We show that the optimal rate established by Chazal et al. (J. Mach. Learn. Res. <b>16</b>, 3603–3635 <CitationRef CitationID="CR3">2015</CitationRef>) in the i.i.d. case is reached. Our results apply, for instance, to a class of compactly supported stationary Markov chains, as well as to stationary <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(\varvec{\varphi }\)</EquationSource> </InlineEquation>-mixing, <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(\varvec{\rho }\)</EquationSource> </InlineEquation>-mixing, or <InlineEquation ID="IEq6"> <EquationSource Format="TEX">\(\varvec{\alpha }\)</EquationSource> </InlineEquation>-mixing sequences.</p>

错误:搜索内容不能为空,请输入英文关键词
错误:关键词超出字数限制,请精简
高级检索

Leadbetter-type conditions for bounding the Hausdorff metric of compactly supported stationary sequences

  • Sana Louhichi

摘要

The purpose of this paper is to establish a connection between stochastic extreme value theory and certain aspects of topological data analysis. We propose two assumptions analogous to Leadbetter’s conditions (known as Conditions \(\varvec{D(u_n)}\) and \(\varvec{D'(u_n)}\) ), which are widely used in extreme value theory. Under these assumptions, we derive rates of convergence, in expectation, for the Hausdorff metric between a finite set of stationary dependent random variables and their common support, assumed to be a compact subset of \(\mathbb {R}^{\varvec{d}}\) . We show that the optimal rate established by Chazal et al. (J. Mach. Learn. Res. 16, 3603–3635 2015) in the i.i.d. case is reached. Our results apply, for instance, to a class of compactly supported stationary Markov chains, as well as to stationary \(\varvec{\varphi }\) -mixing, \(\varvec{\rho }\) -mixing, or \(\varvec{\alpha }\) -mixing sequences.