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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="research-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">707303</article-id><article-id pub-id-type="doi">10.17587/it.32.227-235</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>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Earthquake precursor detection algorithm based on two signal decomposition methods and machine learning and its numerical study</article-title><trans-title-group xml:lang="ru"><trans-title>Алгоритм обнаружения предвестников землетрясений на основе двух методов декомпозиции сигналов и машинного обучения и его численное исследование</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kolesnikova</surname><given-names>S. I.</given-names></name><name xml:lang="ru"><surname>Колесникова</surname><given-names>С. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. of Tech. Sc., Professor</p></bio><bio xml:lang="ru"><p>д-р техн. наук, проф.</p></bio><email>ksi@guap.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tsygankova</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Цыганкова</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Master’s Student</p></bio><bio xml:lang="ru"><p>магистр</p></bio><email>katetsugankova@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Saint-Petersburg State University of Aerospace Instrumentation</institution></aff><aff><institution xml:lang="ru">Санкт-Петербургский государственный университет аэрокосмического приборостроения</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-05-09" publication-format="electronic"><day>09</day><month>05</month><year>2026</year></pub-date><volume>32</volume><issue>5</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>227</fpage><lpage>235</lpage><history><date date-type="received" iso-8601-date="2026-05-08"><day>08</day><month>05</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-05-08"><day>08</day><month>05</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Informacionnye Tehnologii</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, Информационные технологии</copyright-statement><copyright-year>2026</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/707303">https://journals.eco-vector.com/1684-6400/article/view/707303</self-uri><abstract xml:lang="en"><p>The results of the combined application of the empirical mode decomposition methods, internal decomposition over the time scale and the Hilbert transform for individual modes in order to identify the diagnostic feature of the main event precursor are presented. А computational experiment aimed at a comparative study of the reliability and stability of the obtained forecast for detecting earthquake precursors on a specific sample of real observations against the neural network algorithm was conducted.</p></abstract><trans-abstract xml:lang="ru"><p>Представлены результаты совместного применения методов эмпирической модовой декомпозиции, внутренней декомпозиции по шкале времени и преобразования Гильберта для отдельных мод в целях выделения диагностического признака предвестника основного события. Проведен вычислительный эксперимент, направленный на сравнительное исследование надежности и устойчивости получаемого прогноза обнаружения предвестников землетрясения на конкретной выборке реальных наблюдений против нейросетевого алгоритма.</p></trans-abstract><kwd-group xml:lang="en"><kwd>empirical mode decomposition method</kwd><kwd>internal decomposition over the time scale</kwd><kwd>Hilbert-Huang transform</kwd><kwd>earthquake precursor features</kwd><kwd>noise-to-signal ratio</kwd><kwd>machine learning metrics</kwd><kwd>algorithm training</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>метод эмпирической модовой декомпозиции</kwd><kwd>внутренняя декомпозиция по шкале времени</kwd><kwd>преобразование Гильберта—Хуанга</kwd><kwd>признаки предвестников землетрясений</kwd><kwd>отношение шум—сигнал</kwd><kwd>метрики машинного обучения</kwd><kwd>обучение алгоритма</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">Huang N. 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