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UID:20251219T165412EST-3924HAUiBF@132.216.98.100
DTSTAMP:20251219T215412Z
DESCRIPTION:Speaker: Ila Fiete \n\nProfessor\, Department of Brain and Cogn
 itive Sciences\, Massachusetts Institute of Technology\, USA\n\nEpisodic m
 emory involves fragmenting the continuous stream of experience into discre
 te episodes. Not coincidentally\, the hippocampus\, which plays a central 
 role in both episodic memory and spatial navigation\, represents large spa
 tial environments in a fragmented way even when explored in a continuous t
 rajectory. In non-spatial and non-memory contexts too\, humans report sudd
 en contextual re-anchoring or re-orientation when reading garden path sent
 ences ('Time flies like an arrow\, fruit flies like a banana.') or watchin
 g a movie with viewpoint changes. In this talk\, I will describe a theory 
 for the online and real-time generation of fragmented representations and 
 contextual re-anchoring from continuous experience that resemble those obt
 ained by principled but offline and computationally complex information-ba
 sed algorithms. The resulting fragmentations closely match those observed 
 from neural recordings in animals navigating through complex environments.
  I will discuss the utility of map fragmentation\, as a form of state abst
 raction that enables representation fidelity\, flexible and rapid learning
  through reuse of existing fragments\, and many-fold improvements in the a
 bility to plan and navigate through complex environments relative to more 
 global representations.\n\nRegistration available here. \n\nDr. Fiete is a
  Professor in the Department of Brain and Cognitive Sciences and an Associ
 ate Member of the McGovern Institute at MIT. She obtained her undergraduat
 e degrees in Physics and Mathematics at the University of Michigan and her
  M.A. and Ph.D. in Physics at Harvard\, under the guidance of Sebastian Se
 ung at MIT (co-advised by Daniel Fisher). Her postdoctoral work was at the
  Kavli Institute for Theoretical Physics at Santa Barbara\, and at Caltech
 \, where she was a Broad Fellow. She was subsequently on the faculty of th
 e University of Texas at Austin in the Center for Learning and Memory. Ila
  Fiete is an HHMI Faculty Scholar. She has been a CIFAR Senior Fellow\, a 
  McKnight Scholar\, an ONR Young Investigator\, an Alfred P. Sloan Foundat
 ion Fellow and a Searle Scholar.\n\n\nSupported by the generosity of the K
 illam Trusts \, The Neuro’s Killam Seminar series hosts outstanding guest 
 speakers whose research is of interest to the scientific community at The 
 Neuro and 9IÖÆ×÷³§Ãâ·Ñ.\n
DTSTART:20211102T200000Z
DTEND:20211102T210000Z
SUMMARY:Killam Seminar Series presents 'Efficient representation\, learning
 \, and planning through abstraction: clustering cognitive spaces into subm
 aps'
URL:/neuro/channels/event/killam-seminar-series-presen
 ts-efficient-representation-learning-and-planning-through-abstraction-3344
 14
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