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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="review-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Informacionnye Tehnologii</journal-id><journal-title-group><journal-title xml:lang="en">Informacionnye Tehnologii</journal-title><trans-title-group xml:lang="ru"><trans-title>Информационные технологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1684-6400</issn><publisher><publisher-name xml:lang="en">New Technologies Publishing House</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">702197</article-id><article-id pub-id-type="doi">10.17587/it.31.476-484</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Modeling and optimization</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Моделирование и оптимизация</subject></subj-group><subj-group subj-group-type="article-type"><subject>Review Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Building predictive models with structural discontinuities based on fuzzy Markov chains</article-title><trans-title-group xml:lang="ru"><trans-title>Построение прогнозных моделей со структурными разрывами на базе нечетких цепей Маркова</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sirota</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Сирота</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Ph.D., Associate Professor</p></bio><bio xml:lang="ru"><p>канд. физ.-мат. наук, доц.</p></bio><email>atoris@list.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Voronezh State University</institution></aff><aff><institution xml:lang="ru">Воронежский государственный университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-09-15" publication-format="electronic"><day>15</day><month>09</month><year>2025</year></pub-date><volume>31</volume><issue>9</issue><issue-title xml:lang="en">Informacionnye Tehnologii</issue-title><issue-title xml:lang="ru">Информационные технологии</issue-title><fpage>476</fpage><lpage>483</lpage><history><date date-type="received" iso-8601-date="2026-02-04"><day>04</day><month>02</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-02-04"><day>04</day><month>02</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Informacionnye Tehnologii</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Информационные технологии</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Informacionnye Tehnologii</copyright-holder><copyright-holder xml:lang="ru">Информационные технологии</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/1684-6400/article/view/702197">https://journals.eco-vector.com/1684-6400/article/view/702197</self-uri><abstract xml:lang="en"><p>An approach to modeling a multidimensional time series of atmospheric temperature data based on fuzzy Markov chains is considered. This approach allows us to solve the general scientific problem of constructing time series models with structural discontinuities, as well as solving the problem of parametric identification in the case when the model parameters depend on time. The paper compares the constructed models based on fuzzy Markov chains with other models proposed by the authors earlier. A numerical experiment using these data as an example showed the best quality of the proposed models, as well as a strictly justified approach to identifying areas of homogeneity of the time series.</p></abstract><trans-abstract xml:lang="ru"><p>Рассматривается подход к моделированию многомерного временного ряда на базе нечетких цепей Маркова. Этот подход позволяет решить проблему построения моделей временных рядов со структурными разрывами, а также задачу параметрической идентификации в случае, когда параметры модели зависят от времени. Проводится сравнение построенных на базе нечетких цепей Маркова моделей с другими моделями, предложенными авторами ранее. Численный эксперимент с использованием данных атмосферных температур показал лучшее качество предлагаемых моделей, а также строгую обоснованность подхода при выделении участков однородности временного ряда.</p></trans-abstract><kwd-group xml:lang="en"><kwd>time series</kwd><kwd>modeling</kwd><kwd>structural discontinuities</kwd><kwd>identification problem</kwd><kwd>parameters</kwd><kwd>fuzzy Markov chains</kwd><kwd>areas of uniformity of the time series</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>ременной ряд</kwd><kwd>моделирование</kwd><kwd>структурные разрывы</kwd><kwd>задача идентификации</kwd><kwd>параметры</kwd><kwd>нечеткие цепи Маркова</kwd><kwd>участки однородности временного ряда</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Grebenyuk E. A. 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