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<!doctype html> <html> <head> <meta content="text/html; charset=utf-8" http-equiv="content-type"> <title>CEMAT - </title> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous"> <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"> <link rel="stylesheet" type="text/css" href="css/cemat.css" media="screen"> </head> <body> <div id="header"> <a href="main.php"><img border="0" id="logo" name="logo" alt="CEMAT - Centro de Matem锟絫ica e Aplica锟斤拷es" src="imgs/logocemat.png" width="150" height="82"></a> <div id="header-links" class="d-none d-sm-block"> <a href="https://tecnico.ulisboa.pt" target="_blank"><img border="0" src="imgs/logoist.png" width="87" height="37"></a> <a href="https://ciencias.ulisboa.pt" target="_blank"><img border="0" src="imgs/Ciencias_Logo_Azul-01.png" width="86" height="35"></a> <a href="https://www.fct.pt" target="_blank"><img border="0" src="imgs/logo_fct20anos.png" style="margin-top:-3px;" width="185" height="49"></a> </div> <div id="lang-select"> <a href="?sem_id=2748&amp;locale=pt">pt</a> | <a href="?sem_id=2748&amp;locale=en">en</a> </div> </div> <nav class="navbar navbar-expand-lg navbar-dark bg-dark"><button aria-expanded="false" aria-label="Toggle navigation" aria-controls="navbarSupportedContent" class="navbar-toggler" data-toggle="collapse" data-target="#navbarSupportedContent"><span class="navbar-toggler-icon">&nbsp;</span></button> <div id="navbarSupportedContent" class="collapse navbar-collapse"> <ul class="navbar-nav w-100 d-flex justify-content-around"> <!-- Home --> <li class="nav-item"><a data-menu="main" href="main.php#main" class="nav-link"><span>Home</span></a></li> <!-- Dropdown1 Areas --> <li class="nav-item dropdown"><a data-menu="area.p" href="#" aria-haspopup="true" aria-expanded="false" role="button" id="navbarDropdown1" class="nav-link dropdown-toggle" data-toggle="dropdown"><span>Research Areas</span></a> <div class="dropdown-menu rounded-0 py-0" aria-labelledby="navbarDropdown1"> <a href="area.php?section=algebra&member_id=16&project_id=7#area.p" class="dropdown-item">Algebra and Computing</a> <a href="area.php?section=applied&member_id=84&project_id=4#area.p" class="dropdown-item">Applied and Numerical Analysis</a> <a href="area.php?section=modeling&member_id=83&project_id=6#area.p" class="dropdown-item">Mathematical Modeling in Biomedicine</a> <a href="area.php?section=statistics&member_id=86&project_id=5#area.p" class="dropdown-item">Statistics and Stochastic Processes</a> </div></li> <!-- Dropdown2 Members --> <li class="nav-item"><a data-menu="members" href="members.php#members" class="nav-link"><span>Members</span></a></li> <!-- Dropdown3 Publications --> <li class="nav-item"><a data-menu="documents" href="documents.php#documents" class="nav-link"><span>Publications</span></a></li> <!-- Dropdown4 Events --> <li class="nav-item dropdown"><a data-menu="seminar" href="#" aria-haspopup="true" aria-expanded="false" role="button" id="navbarDropdown4" class="nav-link dropdown-toggle" data-toggle="dropdown"><span>Events</span></a> <div class="dropdown-menu rounded-0 py-0" aria-labelledby="navbarDropdown4"> <a href="seminars.php?event_type_id=15#seminar" class="dropdown-item">Applied and Numerical Analysis Seminar</a> <a href="seminars.php?event_type_id=16#seminar" class="dropdown-item">Probability and Statistics Seminar</a> <a href="seminars.php?event_type_id=1#seminar" class="dropdown-item">Algebra Seminars</a> <a href="seminars.php?event_type_id=17#seminar" class="dropdown-item">CEMAT's Open Seminar</a> <a href="seminars.php?event_type_id=6#seminar" class="dropdown-item">Scientific Meetings</a> <a href="seminars.php?event_type_id=5#seminar" class="dropdown-item">Courses</a> </div></li> <!-- Gallery --> <li class="nav-item"><a data-menu="projects" href="content.php?section=projects#projects" class="nav-link"><span>Projects</span></a> </li> <!-- Open Positions --> <li class="nav-item"><a data-menu="positions" href="content.php?section=positions#positions" class="nav-link"><span>Open Positions</span></a> </li> <!-- Contacts --> <li class="nav-item"><a data-menu="contacts" href="contacts.php#contacts" class="nav-link"><span>Contacts</span></a></li> </ul> </div> </nav> <div class="container" style="min-height:600px;"> <h2><a href="#" onclick="window.history.back();">Events</a>&nbsp;&gt; Probability and Statistics Seminar</h2> <div class="header-bar"></div> <form method="post" name="seminar" action="seminar.php?sem_id=2748&amp;ccsForm=seminar%3AEdit"> <table id="structure" cellspacing="0" width="100%"> <tr> <td valign="top" width="100%"> <table class="contentTable" cellspacing="0" cellpadding="0" width="100%"> <tr> <td width="100%"> <h3> From data transformations and aggregations to transfer functions: The importance of extremes and boundary data models</h3> <b>15/01/2025&nbsp;Wednesday 15th January 2025, 14:30 ()&nbsp;</b> <a href="https://pe.math.tecnico.ulisboa.pt/seminars/?action=show&id=7436" target="_blank"> <span class="more">More</span> </a> <br> Milan Stehl铆k, Institute of Statistics, Universidad de Valpara铆so, Chile <br> <br> <p><p>Biological, physical, and ecological systems offer a lot of complexity that should be well understood before valuable interventions can be made. We will address both complex and extreme measurements from these systems. There is a necessity to classify appropriate learning mechanisms and define transfer functions and statistics. A natural question may arise: how to address extreme parts of data? How to define boundaries of the datasets and what can be the effects on statistical properties of estimated structures (e.g. uniqueness of copulas? Can we provide efficient estimators of extremes? For closed physical systems, all can be well integrated into both natural and technical sciences, which gives us an optimal instrument for the decomposition of data into stochastic, deterministic, and chaotic part. In particular, we will introduce SPOCU transfer function and provide some of its unique properties for processing of complex data, statistical learning will be discussed, and tuning of parameters of SPOCU-based neural networks will be explained. During the talk, I will acknowledge the contributions of the Portuguese Extreme group and outline some relations to t-Hill-based estimators. The t-Hill approach will be introduced from a robustness perspective, mentioning and interconnecting with articles, among others. Attractive applications to biological systems, such as mass balance in the ecosystem of glaciers in Patagonia, or methane emissions from wetlands will be addressed.</p></p> </td> </tr> </table> </td> </tr> </table> </form> </div> <div id="foot"> <div class="container"> <div class="text-center"> <b>CEMAT</b> - Center for Computational and Stochastic Mathematics </div> <div id="foot-bar"></div> <div class="text-center"> <a href="http://www.ist.utl.pt/" target="_blank">Instituto Superior T&ecirc;cnico</a><br> <a href="http://www.fc.ul.pt/" target="_blank">Faculdade de Ci&ecirc;ncias</a><br> <a href="http://www.ul.pt/" target="_blank">Universidade de Lisboa</a><br> </div> </div> </div> <script src="./js/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js" integrity="sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicKwpJf9c9IpFgh" crossorigin="anonymous"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js" integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkCk9SaVuEZflJ" crossorigin="anonymous"></script> <script src="./js/cemat.js"></script> </body> </html>

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