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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">vestnikmephi</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник НИЯУ МИФИ</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik natsional'nogo issledovatel'skogo yadernogo universiteta "MIFI"</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2304-487X</issn><publisher><publisher-name>National Research Nuclear University "MEPhI"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.1134/S2304487X19040047</article-id><article-id custom-type="elpub" pub-id-type="custom">vestnikmephi-41</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>ПРИКЛАДНАЯ МАТЕМАТИКА И ИНФОРМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>APPLIED MATHEMATICS AND COMPUTER SCIENCE</subject></subj-group></article-categories><title-group><article-title>Аппроксимация измерений интернет-трафика в магистральном канале суммой логнормальных распределений</article-title><trans-title-group xml:lang="en"><trans-title>Approximation of Internet Traffic Measurements in the Trunk Channel by the Sum of Lognormal Distributions</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>Иванов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Валерий В. Иванов</p><p>141981</p><p>141980</p><p>Московская область</p><p>Дубна</p></bio><bio xml:lang="en"><p>Valery V. Ivanov</p><p>141981</p><p>141980</p><p>Moscow oblast</p><p>Dubna</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>Иванов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виктор В. Иванов</p><p>141980</p><p>115409</p><p>Московская область</p><p>Дубна</p><p>Москва</p></bio><bio xml:lang="en"><p>Victor V. Ivanov</p><p>141980</p><p>115409</p><p>Moscow oblast</p><p>Dubna</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Крянев</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kryanev</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>141980</p><p>115409</p><p>Московская область</p><p>Дубна</p><p>Москва</p></bio><bio xml:lang="en"><p>141980</p><p>115409</p><p>Moscow oblast</p><p>Dubna</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Татаринов</surname><given-names>И. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Tatarinov</surname><given-names>I. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>123060</p><p>Москва</p></bio><bio xml:lang="en"><p>123060</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ЗАО “МПОТК “ТЕХНОКОМПЛЕКТ”; Объединенный институт ядерных исследований</institution><country>Россия</country></aff><aff xml:lang="en"><institution>CJSC “MPOTC “TECHNOKOMPLEKT”; United Institute for Nuclear Research</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Объединенный институт ядерных исследований; Национальный исследовательский ядерный университет “МИФИ”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>United Institute for Nuclear Research; National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>АО “Лаборатория Касперского”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kaspersky Lab</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>08</day><month>02</month><year>2023</year></pub-date><volume>8</volume><issue>4</issue><fpage>380</fpage><lpage>394</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Иванов В.В., Иванов В.В., Крянев А.В., Татаринов И.И., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Иванов В.В., Иванов В.В., Крянев А.В., Татаринов И.И.</copyright-holder><copyright-holder xml:lang="en">Ivanov V.V., Ivanov V.V., Kryanev A.V., Tatarinov I.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://vestnikmephi.elpub.ru/jour/article/view/41">https://vestnikmephi.elpub.ru/jour/article/view/41</self-uri><abstract><p>   В настоящей работе представлены два численных подхода для аппроксимации измерений сетевого трафика, регистрируемого в магистральном канале, на основе традиционного метода наименьших квадратов (МНК) и коэффициента детерминации R2 . Для дополнительной оценки точности аппроксимации анализируемых данных логнормальным распределением в настоящей статье анализировалась динамика зависимости максимума интенсивности сетевого трафика от размера окна агрегации. В первом и втором подходах был достигнут высокий уровень соответствия данных наблюдения логнормальному закону. При этом после включения в аппроксимирующую функцию дополнительных слагаемых точность аппроксимации заметно возрастает. Показано, что зависимость коэффициента детерминации от размера окна агрегации для анализируемых сетевых пакетов позволяет контролировать точность аппроксимации данных наблюдения логнормальным законом.</p></abstract><trans-abstract xml:lang="en"><p>   Two numerical approaches for approximating measurements of the network traffic recorded in a trunk channel based on the traditional least squares method and the coefficient of determination R2 . To additionally estimate the accuracy of the approximation of the analyzed data by a lognormal distribution, the dynamics of the dependence of the maximum intensity of the network traffic on the size of the aggregation window has been analyzed. A high level of compliance of the observation data with a lognormal law has been achieved in both approaches. At the same time, the accuracy of approximation increases noticeably when additional terms are included in the approximating function. It has been shown that the dependence of the determination coefficient on the size of the aggregation window for the analyzed network packets allows one to control the accuracy of the observation data by a lognormal law.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сетевой трафик</kwd><kwd>интенсивность</kwd><kwd>аппроксимация</kwd><kwd>логнормальное распределение</kwd><kwd>окно агрегации</kwd><kwd>коэффициент детерминации</kwd></kwd-group><kwd-group xml:lang="en"><kwd>traffic</kwd><kwd>intensity</kwd><kwd>approximation</kwd><kwd>lognormal distribution</kwd><kwd>aggregation window</kwd><kwd>coefficient of determination</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">Zrelov P. V., Ivanov Valery V., Ivanov Victor V., Kryukov Yu. A., Tatarinov I. I. Study of Internet-Traffic Features in the Trunk Channel, Physics of Particles and Nuclei Letters. 2019. V. 16. № 3. 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