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<front>
<journal-meta>
<journal-id journal-id-type="publisher">EGUsphere</journal-id>
<journal-title-group>
<journal-title>EGUsphere</journal-title>
<abbrev-journal-title abbrev-type="publisher">EGUsphere</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">EGUsphere</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub"></issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/egusphere-2026-3775</article-id>
<title-group>
<article-title>Unsupervised neural network for dynamics control under chaotic regime</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Neves Salles</surname>
<given-names>Roberto</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Leite de Oliveira Jr.</surname>
<given-names>César Magno</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Saiki</surname>
<given-names>Yoshitaka</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Fraga de Campos Velho</surname>
<given-names>Haroldo</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Hitotsubashi University, Kunitachi, Tokyo, 186-8601, Japan</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>University of São Paulo, São Paulo, SP, 05508-900, Brazil</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>National Institute for Space Research, São José dos Campos, SP, 12227-010, Brazil</addr-line>
</aff>
<pub-date pub-type="epub">
<day>04</day>
<month>08</month>
<year>2026</year>
</pub-date>
<volume>2026</volume>
<fpage>1</fpage>
<lpage>16</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2026 Roberto Neves Salles et al.</copyright-statement>
<copyright-year>2026</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/4.0/">https://creativecommons.org/licenses/by/4.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://egusphere.copernicus.org/preprints/2026/egusphere-2026-3775/">This article is available from https://egusphere.copernicus.org/preprints/2026/egusphere-2026-3775/</self-uri>
<self-uri xlink:href="https://egusphere.copernicus.org/preprints/2026/egusphere-2026-3775/egusphere-2026-3775.pdf">The full text article is available as a PDF file from https://egusphere.copernicus.org/preprints/2026/egusphere-2026-3775/egusphere-2026-3775.pdf</self-uri>
<abstract>
<p>Some natural phenomena have strong impacts on society, implying the loss of human lives and a huge amount of financial costs. Therefore, the possibility of controlling severe natural phenomena is of practical interest, preserving lives and mitigating costs. The simulation of dynamical systems could help us to predict severe events, allowing the deployment of control actions to avoid or to mitigate the severity associated with the predicted phenomenon. Similar to the numerical experiments of Miyoshi and Sun (2022), here, ensemble predictions are employed to drive the control action in a chaotic dynamical system. The Observing Systems Simulation Experiment (OSSE) is performed using the Cellular Neural Network (CeNN) as the data assimilation operator with the Lorenz-63 system. The proposed CeNN-based assimilation achieved control performance comparable to or better than a perturbed observation ensemble Kalman filter, particularly for the more frequent assimilation interval.</p>
</abstract>
<counts><page-count count="16"/></counts>
<funding-group>
<award-group id="gs1">
<funding-source>Conselho Nacional de Desenvolvimento Científico e Tecnológico</funding-source>
<award-id>201435/2024-1</award-id>
<award-id>140762/2022-1</award-id>
<award-id>315349/2023-9</award-id>
</award-group>
<award-group id="gs2">
<funding-source>Universidade de São Paulo</funding-source>
<award-id>605052/2025</award-id>
</award-group>
<award-group id="gs3">
<funding-source>Moonshot Research and Development Program</funding-source>
<award-id>JPMJMS2282-15</award-id>
</award-group>
</funding-group>
</article-meta>
</front>
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<back>
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