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SUMMARY:Lise Gamboa - Interpretation measures in Random Survival Forests (
 RSF) with longitudinal predictors
DTSTART:20251218T120000Z
DTEND:20251218T130000Z
DTSTAMP:20260425T212600Z
UID:indico-event-15196@indico.math.cnrs.fr
CONTACT:denis.rustand@u-bordeaux.fr
DESCRIPTION:Speakers: Lise Gamboa (Université de Bordeaux\, Inserm Bordea
 ux Population Health U1219\, BIOSTAT)\n\nSpeaker: Lise Gamboa from BPHTitl
 e: Interpretation measures in Random Survival Forests (RSF) with longitudi
 nal predictors\nAbstract: \nIn many biomedical studies\, time-to-event ou
 tcomes must be predicted from diverse predictors\, including numerical\, c
 ategorical\, and longitudinal variables measured repeatedly over time. Ran
 dom Survival Forests (RSF) are increasingly used in this setting because t
 hey provide strong predictive performance\, handle complex relationships\,
  and do not rely on assumptions such as proportional hazards ratio. Howeve
 r\, their internal mechanisms remain difficult to interpret\, which limits
  their use in clinical contexts where interpretability is essential. Exist
 ing interpretability tools such as variable importance\, partial dependenc
 e plots\, or SHAP values offer useful insights but are not yet adapted to 
 longitudinal predictors\, even though these dynamic markers have critical 
 information in health research.\nThis work addresses this limitation by ex
 ploring how current interpretability methods can be extended to RSF models
  that incorporate longitudinal data. To do so\, we rely on the DynForest p
 ackage\, which constructs random forests specifically designed to integrat
 e longitudinal markers into the construction of the forest. The aim is to 
 improve the interpretability of RSF in settings where repeated measurement
 s play a central role.\nCalendar subscription link for the complete semina
 r series:https://indico.math.cnrs.fr/category/711/events.ics\nProgram of t
 he Biostatistics seminars:https://indico.math.cnrs.fr/category/711/\nSubsc
 ribe to the seminar mailing list:https://diff.u-bordeaux.fr/sympa/subscrib
 e/seminaire.biostat.bph\nFormer e-seminars on our YouTube channel (mostly 
 in French): https://www.youtube.com/channel/UCURp-hEQL7k23UzGfqgEurA/video
 s\n \nBiostatistics seminar series from the Department of Public Health f
 rom the University of Bordeaux and the Bordeaux Population Health UMR 1219
  research center\n \n\nhttps://indico.math.cnrs.fr/event/15196/
LOCATION:Module 1.3 (ISPED)
URL:https://indico.math.cnrs.fr/event/15196/
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