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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">litosphere</journal-id><journal-title-group><journal-title xml:lang="ru">Литосфера</journal-title><trans-title-group xml:lang="en"><trans-title>LITHOSPHERE (Russia)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1681-9004</issn><issn pub-type="epub">2500-302X</issn><publisher><publisher-name>A.N. Zavaritsky Institute of Geology and Geochemistry</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24930/1681-9004-2025-25-2-320-335</article-id><article-id custom-type="edn" pub-id-type="custom">XFIXKQ</article-id><article-id custom-type="elpub" pub-id-type="custom">litosphere-2279</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>МЕТОДЫ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RESEARCH METHODS</subject></subj-group></article-categories><title-group><article-title>Применение методов машинного обучения для классификации кварцитов по химическому составу: влияние микроэлементов и геохимическая идентификация</article-title><trans-title-group xml:lang="en"><trans-title>Application of machine learning methods to classify quartzites by chemical composition: the influence of trace elements and geochemical identification</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>Мясникова</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Myasnikova</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>664033; ул. Фаворского, 1А,; Иркутск</p></bio><bio xml:lang="en"><p>Alexandra S. Myasnikova</p><p>664033; 1A Favorsky st.; Irkutsk</p></bio><email xlink:type="simple">sasham@igc.irk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шендрик</surname><given-names>Р. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Shendrik</surname><given-names>R. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>664033; ул. Фаворского, 1А,; Иркутск</p></bio><bio xml:lang="en"><p>Roman Yu. Shendrik</p><p>664033; 1A Favorsky st.; Irkutsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Елисеев</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Eliseev</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>664033; ул. Фаворского, 1А,; Иркутск</p></bio><bio xml:lang="en"><p>Igor A. Eliseev</p><p>664033; 1A Favorsky st.; Irkutsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чачанагова</surname><given-names>О. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Chachanagova</surname><given-names>O. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>664033; ул. Фаворского, 1А,; Иркутск</p></bio><bio xml:lang="en"><p>Olga I. Chachanagova</p><p>664033; 1A Favorsky st.; Irkutsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Федоров</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedorov</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>664033; ул. Фаворского, 1А,; Иркутск</p></bio><bio xml:lang="en"><p>Alexander M. Fedorov</p><p>664033; 1A Favorsky st.; Irkutsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Непомнящих</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Nepomniyschikh</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>664033; ул. Фаворского, 1А,; Иркутск</p></bio><bio xml:lang="en"><p>Alexander I. Nepomniyschikh</p><p>664033; 1A Favorsky st.; Irkutsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт геохимии им. А.П. Виноградова СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>A.P. Vinogradov Institute of Geochemistry, SB RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>04</day><month>05</month><year>2025</year></pub-date><volume>25</volume><issue>2</issue><issue-title>Минералы: строение, свойства, методы исследования</issue-title><fpage>320</fpage><lpage>335</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мясникова А.С., Шендрик Р.Ю., Елисеев И.А., Чачанагова О.И., Федоров А.М., Непомнящих А.И., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Мясникова А.С., Шендрик Р.Ю., Елисеев И.А., Чачанагова О.И., Федоров А.М., Непомнящих А.И.</copyright-holder><copyright-holder xml:lang="en">Myasnikova A.S., Shendrik R.Y., Eliseev I.A., Chachanagova O.I., Fedorov A.M., Nepomniyschikh A.I.</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://www.lithosphere.ru/jour/article/view/2279">https://www.lithosphere.ru/jour/article/view/2279</self-uri><abstract><sec><title>   Объект исследования</title><p>   Объект исследования. Кварциты из различных участков Восточно-Саянского кварценосного района.</p></sec><sec><title>   Цель</title><p>   Цель. Целью данного исследования является применение методов машинного обучения для эффективной классификации образцов кварцитов по их химическому составу, включая идентификацию ключевых микроэлементов, таких как марганец, и выявление геохимических различий между образцами.</p></sec><sec><title>   Материалы и методы</title><p>   Материалы и методы. В исследовании использовались данные химического анализа 776 образцов кварцита, которые были подвергнуты интерпретации с помощью методов машинного обучения. В качестве методов были применены стандартные техники предварительной обработки данных, такие как нормализация, а также аугментация данных с использованием SMOTE для решения проблемы дисбаланса классов. В итоге был выбран алгоритм CatBoost, который показал высокую точность классификации.</p></sec><sec><title>   Результаты</title><p>   Результаты. Результаты кросс-валидации показали, что алгоритм CatBoost достиг точности классификации до 97 %. Важность признаков указывает на то, что марганец является ключевым элементом в классификации образцов, в то время как такие элементы, как алюминий и калий, оказывают вспомогательное влияние. Также успешно проведен анализ классификации по цвету кварцитов с точностью до 0.94.</p></sec><sec><title>   Выводы</title><p>   Выводы. Исследование демонстрирует эффективность применения методов машинного обучения для анализа химического состава кварцитов, предоставляя новые возможности для геохимических и археологических исследований.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>   Research subject</title><p>   Research subject. Quartzites from Different Sites of the East Sayan Quartz-Bearing Region.</p></sec><sec><title>   Aim</title><p>   Aim. The aim of this study is to apply machine learning methods to effectively classify quartzite samples by their chemical composition, including the identification of key trace elements such as manganese and the detection of geochemical differences between samples.</p></sec><sec><title>   Materials and methods</title><p>   Materials and methods. The study used chemical analysis data from 776 quartzite samples, which were interpreted using machine learning methods. Standard data preprocessing techniques such as normalization were applied as well as data augmentation using SMOTE to solve the class imbalance problem. As a result, the CatBoost algorithm was selected, which showed high classification accuracy.</p></sec><sec><title>   Results</title><p>   Results. Cross-validation results showed that the CatBoost algorithm achieved classification accuracy of up to 97 %. The importance of features indicates that manganese is a key element in the classification of samples, while elements such as aluminum and potassium have a supporting effect. The analysis of the classification by color of quartzites with an accuracy of 0.94 was also successfully carried out.</p></sec><sec><title>   Conclusions</title><p>   Conclusions. The study demonstrates the effectiveness of applying machine learning methods to the analysis of the chemical composition of quartzites, providing new opportunities for geochemical and archaeological research.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>кварциты</kwd><kwd>машинное обучение</kwd><kwd>классификация горных пород</kwd><kwd>RobustScaler</kwd><kwd>статистический анализ</kwd></kwd-group><kwd-group xml:lang="en"><kwd>quartzites</kwd><kwd>machine learning</kwd><kwd>rock classification</kwd><kwd>RobustScaler</kwd><kwd>statistical analysis</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование проведено в рамках выполнения государственного задания по Проекту № 0284-2021-0004</funding-statement><funding-statement xml:lang="en">The study was performed by the governmental assignment in terms of Project 0284-2021-0004</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">Аюржанаева Д.Ц., Федоров А.М., Мазукабзов А.М., Непомнящих А.И., Очирова Э.А. 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