BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Laboratoire de Mathématiques de Versailles - ECPv6.3.5//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Laboratoire de Mathématiques de Versailles X-ORIGINAL-URL:https://lmv.math.cnrs.fr X-WR-CALDESC:évènements pour Laboratoire de Mathématiques de Versailles REFRESH-INTERVAL;VALUE=DURATION:PT1H X-Robots-Tag:noindex X-PUBLISHED-TTL:PT1H BEGIN:VTIMEZONE TZID:Europe/Paris BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:20200329T010000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:20201025T010000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20200428T113000 DTEND;TZID=Europe/Paris:20200428T123000 DTSTAMP:20240329T153525 CREATED:20200226T133406Z LAST-MODIFIED:20200330T101807Z UID:7497-1588073400-1588077000@lmv.math.cnrs.fr SUMMARY:PS : Emilie Chautru (Mines ParisTech) : Champs aléatoires max-stables dans une optique géostatistique : REPORTÉ DESCRIPTION:In many geostatistical applications (soil contamination evaluation\, mining resources estimation)\, the physical phenomenon under study cannot be observed more than a small number of times. When it is modeled as a random field\, this raises the question of how to assess its characteristics from a single realization. To determine when it is even possible\, a geostatistical tool named the integral range is introduced. It characterizes the statistical fluctuations of a random field at large scale\, and is thus intricately linked to the concepts of ergodicity and mixing. When applied to excursion sets of a max-stable process\, we show how it relates to its dependence structure\, thereby completing results established by Erwan Koch in a spatial risk context. From this primary analysis\, we derive a new estimator of the extremal coefficient function\, the spatial asymptotics of which are explored in a continuous domain framework. (Collaboration with Marine Demangeot and Anne Sabourin) \nPS : Emilie Chautru (Mines ParisTech) : Champs aléatoires max-stables dans une optique géostatistique : REPORTÉ URL:https://lmv.math.cnrs.fr/evenenement/ps-emilie-chautru-ecole-des-mines-titre-a-preciser-date-a-confirmer/ LOCATION:Bâtiment Fermat\, salle 2107 CATEGORIES:Séminaire PS END:VEVENT END:VCALENDAR