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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8323-2026-70-3-191-200</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-1309</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАТЕМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICS</subject></subj-group></article-categories><title-group><article-title>Неоднородные цепи Маркова высокого порядка: модели и их вероятностно-статистический анализ</article-title><trans-title-group xml:lang="en"><trans-title>Non-homogeneous high-order Markov chains: models and their probabilistic-statistical analysis</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Харин</surname><given-names>Ю. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kharin</surname><given-names>Yu. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Харин Юрий Семенович – академик, д-р физ.-мат. наук, профессор, директор</p><p>пр. Независимости, 4, 220030, Минск</p></bio><bio xml:lang="en"><p>Kharin Yuriy S. – Academician, D. Sc. (Physics and Mathematics), Professor, Director</p><p>4, Nezavisimosti Ave., 220030, Minsk</p></bio><email xlink:type="simple">kharin@bsu.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт прикладных проблем математики  и информатики Белорусского государственного университета</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Research Institute for Applied Problems of Mathematics and Informatics of the Belarusian State University</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>09</day><month>07</month><year>2026</year></pub-date><volume>70</volume><issue>3</issue><fpage>191</fpage><lpage>200</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Харин Ю.С., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Харин Ю.С.</copyright-holder><copyright-holder xml:lang="en">Kharin Y.S.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://doklady.belnauka.by/jour/article/view/1309">https://doklady.belnauka.by/jour/article/view/1309</self-uri><abstract><p>Сообщение посвящено развитию теории вероятностно-статистического анализа неоднородных цепей Маркова высокого порядка, для которых матрица вероятностей одношаговых переходов допускает изменение во времени. Построены модели детерминировано-неоднородных и стохастически-неоднородных цепей Маркова высокого порядка, исследованы их вероятностные свойства и предложены подходы к статистическому оцениванию параметров этих моделей.</p></abstract><trans-abstract xml:lang="en"><p>The paper is devoted to the development of probabilistic and statistical analysis of non-homogeneous high-order Markov chains for cases in which the matrix of one-step transition probabilities is time-varying. Models for deterministically non-homogeneous and stochastically non-homogeneous high-order Markov chains are constructed. Probabilistic properties of these models are analyzed and some approaches to statistical estimation of the model parameters are proposed.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>цепь Маркова</kwd><kwd>неоднородность</kwd><kwd>скрытая цепь</kwd><kwd>двойная цепь</kwd><kwd>статистическое оценивание</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Markov chain</kwd><kwd>non-homogeneity</kwd><kwd>Hidden chain</kwd><kwd>Double Markov chain</kwd><kwd>statistical estimation</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Данные исследования частично поддержаны финансированием по ГП «Конвергенция–2030».</funding-statement><funding-statement xml:lang="en">This research is partially financially supported by the project on GP “Convergence–2030”.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">. Kharin, Yu. 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