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BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Canal UGR - ECPv6.15.5//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Canal UGR X-ORIGINAL-URL:https://canalugr.si2.dev X-WR-CALDESC:Eventos para Canal UGR REFRESH-INTERVAL;VALUE=DURATION:PT1H X-Robots-Tag:noindex X-PUBLISHED-TTL:PT1H BEGIN:VTIMEZONE TZID:Europe/Madrid BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:20210328T010000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:20211031T010000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTART;TZID=Europe/Madrid:20210628T120000 DTEND;TZID=Europe/Madrid:20210628T130000 DTSTAMP:20260617T210216 CREATED:20210625T105022Z LAST-MODIFIED:20210625T105022Z UID:373860-1624881600-1624885200@canalugr.si2.dev SUMMARY:Seminario "Overfitting mitigation in correlation matrices and applications to the study of brain connectivity" DESCRIPTION:Seminario (online y presencial) a cargo del Dr. Miguel Ibáñez\, ISTC-CNR (Italy). \nAbstract: We compare various known and original strategies of overfitting mitigation in correlation matrices\, in the context of brain functional connectivity. In particular\, we infer a database of human brain activity from functional Magnetic Resonance Imaging (fMRI)\, beyond Maximum Likelihood inference and using the multivariate Gaussian as likelihood. We show that the relative algorithm performances are consistent across subjects\, and across samples of a synthetic database of similar characteristics. We observe as well that the resulting cleaned correlation matrices\, that are proposed as a refined model of functional connectivity\, depend crucially on the cleaning algorithm. We discuss possible applications of these findings to network neuroscience. \n\n\nFecha: Lunes\, 28 de junio 2021\nLugar: Aula de ordenadores del Área de Física de la Materia (hasta completar aforo). Online: https://meet.google.com/ijd-agcd-rye\nHorario: 12:00 h.\nOrganiza: grupo de Física Estadística de los sistemas Complejos\nMás información: Daniel Manzano | manzano@onsager.ugr.es URL:https://canalugr.si2.dev/evento/seminario-overfitting-mitigation-in-correlation-matrices-and-applications-to-the-study-of-brain-connectivity/ LOCATION:https://meet.google.com/ijd-agcd-rye CATEGORIES:Conferencias, seminarios, divulgación científica ATTACH;FMTTYPE=image/png:https://canalugr.si2.dev/wp-content/uploads/2020/02/matematicas-fisica.png END:VEVENT END:VCALENDAR