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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">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-911</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Классификация анальгетических лекарственных препаратов в первичной упаковке по спектрам терагерцового диапазона с использованием многопараметрических методов</article-title><trans-title-group xml:lang="en"><trans-title>Classification of Analgetic Drugs in Primary Packages by Applying Multivariate Methods to Terahertz Spectra</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>Ляхнович</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Lyakhnovich</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</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>Синицын</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sinitsyn</surname><given-names>G. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</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>Ходасевич</surname><given-names>M. A.</given-names></name><name name-style="western" xml:lang="en"><surname>Khodasevich</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><email xlink:type="simple">m.khodasevich@ifanbel.bas-net.by</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>Борисевич</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Borisevich</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физики НАН Беларуси</institution></aff><aff xml:lang="en"><institution>B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>10</day><month>10</month><year>2021</year></pub-date><volume>88</volume><issue>5</issue><fpage>778</fpage><lpage>782</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ляхнович А.В., Синицын Г.В., Ходасевич M.A., Борисевич Д.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Ляхнович А.В., Синицын Г.В., Ходасевич M.A., Борисевич Д.А.</copyright-holder><copyright-holder xml:lang="en">Lyakhnovich A.V., Sinitsyn G.V., Khodasevich M.A., Borisevich D.A.</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://zhps.ejournal.by/jour/article/view/911">https://zhps.ejournal.by/jour/article/view/911</self-uri><abstract><p>Выполнен сравнительный анализ эффективности нескольких многопараметрических методов распознавания классов образцов лекарственных средств в первичной упаковке по спектрам пропускания терагерцового диапазона. Показано преимущество метода опорных векторов, демонстрирующего ошибку классификации ≤5.7 %, для двух групп анальгетических препаратов с высокой степенью неоднородности образцов в группах.</p></abstract><trans-abstract xml:lang="en"><p>We cоmpared the efficiency of some multivariate methods of recognition of drug classes in primary packages using THz transmission spectra. The advantages of the support vector machine are demonstrated with a classification error not exceededing 5.7% for two groups of analgetic drugs with a high level of heterogeneity of the samples in these groups.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>метод главных компонент</kwd><kwd>метод построения деревьев классификации и регрессии</kwd><kwd>линейный дискриминантный анализ</kwd><kwd>метод опорных векторов</kwd><kwd>терагерцовая спектроскопия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>principal component analysis</kwd><kwd>classification and regression tree</kwd><kwd>linear discriminant analysis</kwd><kwd>support vector machine</kwd><kwd>THz spectroscopy</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">W. Suy, T. Chaoy, S. Yangy, Ch. Lin. 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