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X-WR-CALDESC:Events for Ashoka University
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TZID:Asia/Kolkata
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DTSTART:20240101T000000
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BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20251030T133000
DTEND;TZID=Asia/Kolkata:20251030T143000
DTSTAMP:20251019T114656Z
CREATED:20251019T114614Z
LAST-MODIFIED:20251019T114656Z
UID:85310-1761831000-1761834600@www.ashoka.edu.in
SUMMARY:On diffusion sampling of exponentially tilted distributions - Sarvesh Ravichandran Iyer\, SCDLDS\, Ashoka University
DESCRIPTION:Colloquium announcement\nOn diffusion sampling of exponentially tilted distributions\nby Sarvesh Ravichandran Iyer \n \nPost-doctoral Fellow\, SCDLDS\, Ashoka University \n\nSarvesh Ravichandran Iyer is a post doctoral student under Prof. Sandeep Juneja and a member of the SCDLDS since May 2025. He obtained his dual BS-MS degree from IISc in 2018\, and his PhD. in 2024 from ISI\, Bangalore. He was a visiting faculty in the mathematics department at Ashoka in the academic year 2024-25. His research interests revolve around pure jump Levy processes and their applications. \nAbstract: Exponential tilting is a technique in rare event sampling that uses an underlying change of measure in a probability space\, making these rare events more likely. It is applied in multiple domains like finance and climate science to aid with the prediction and mitigation of extreme events. Typically\, given some number of samples from an unknown distribution\, one is required to produce a large number of exponentially twisted samples from these in order to predict the likelihood of such events. We achieve this aim in two steps. First\, we reweigh the samples of the original distribution appropriately using a twisted empirical estimator\, and subsequently perform diffusion sampling on the output of the estimator\, thereby obtaining more twisted samples. We delineate regimes where the empirical estimator performs well\, and where it does not : informally\, large twists cannot be performed with very few samples\, and twisting unbounded distributions is harder than twisting bounded distributions. We also provide theoretical guarantees on the accuracy of diffusion sampling in these regimes. \n\nDate: Wednesday\, Oct 30\, 2025\nTime: 1:30 PM – 2:30 PM\nVenue: AC-02-LR-208-209\, Ashoka University CampusZoom link: https://zoom.us/j/96594121617?pwd=fmrllBAcKhOjDrRScaaVySkDE9bzWi.1\nWebsite: https://cdlds.ashoka.edu.in/
URL:https://www.ashoka.edu.in/event/scdlds-coll09/
LOCATION:AC-02-LR-208-209\, Ashoka University
ORGANIZER;CN="SCDLDS":MAILTO:ashoka-cdlds@ashoka.edu.in
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DTSTART;TZID=Asia/Kolkata:20251030T140000
DTEND;TZID=Asia/Kolkata:20251030T150000
DTSTAMP:20251027T005728Z
CREATED:20251027T005657Z
LAST-MODIFIED:20251027T005728Z
UID:85602-1761832800-1761836400@www.ashoka.edu.in
SUMMARY:Mathematics Colloquium
DESCRIPTION:Dear All\, \nThe Department of Mathematics invites you to a colloquium on October 30\, 2025. \nSpeaker: Dr. Tanushree Shah \nTitle: Visualising contact structures in 3D through paintings \nAbstract:  Mathematics and art\, often seen as distinct realms\, share a common pursuit of structure\, abstraction\, and beauty. In the setting of differential topology\, contact structures on 3-manifolds present a particularly rich geometric landscape. We begin with an introduction to two flavors of contact structures: tight and overtwisted—the latter being well understood\, while the former remains more mysterious. Through the tools of surgery and convex surface theory\, classification of tight structures has been extended to Seifert fibered manifolds. Finally\, we turn to the frontier: What new insights can 4-manifold techniques bring\, and what questions still lie beyond our reach? \nLooking forward to your participation.  \n 
URL:https://www.ashoka.edu.in/event/mathematics-colloquium/
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DTSTART;TZID=Asia/Kolkata:20251030T183000
DTEND;TZID=Asia/Kolkata:20251030T200000
DTSTAMP:20251024T014118Z
CREATED:20251024T014118Z
LAST-MODIFIED:20251024T014118Z
UID:85423-1761849000-1761854400@www.ashoka.edu.in
SUMMARY:The Role of Science in Conserving Wildlife in India
DESCRIPTION:Dear All\, \nThe Department of Environmental Studies cordially invites you to the third colloquium in the Monsoon '25 Colloquium Series on Thursday\, 30 October 2025 \nTime: 6:30 PM IST \nZoom Link: https://zoom.us/j/98843612730?pwd=bEbv3kmHup1p7i0VFbxgPXbZke6Qoj.1  \nTitle: "The Role of Science in Conserving Wildlife in India" \nSpeaker: Dr. Yadvendradev V. Jhala\,  INSA Senior Scientist at National Centre for Biological Sciences \nAbstract: The talk examines the critical\, yet often inconsistent\, role of science in shaping India's wildlife conservation policy and management. Drawing on case studies of iconic species—including the tiger\, Asiatic lion\, snow leopard\, wolf\, and great Indian bustard—it highlights their specific ecological requirements and assesses the current alignment of government policies with these scientific needs. The presentation concludes by identifying key gaps and proposing necessary actions to better integrate scientific evidence into effective conservation strategies. \n\nSpeaker's Bio: Dr. Yadvendradev V. Jhala is a renowned wildlife scientist with a Ph.D. from Virginia Tech and post-doctoral experience at the Smithsonian Institution. He served as Senior Professor and Dean at the Wildlife Institute of India until 2023 and is now an INSA Senior Scientist at the National Centre for Biological Sciences. A fellow of INSA and NASI\, his pioneering research on tigers\, lions\, wolves\, and bustards has directly influenced national policy\, including vulture conservation and the reintroduction of cheetahs to India. His work exemplifies the application of science to effective wildlife conservation and management. \nWe look forward to your active participation. \n  \nWarm regards\, \nEnvironmental Studies Department
URL:https://www.ashoka.edu.in/event/the-role-of-science-in-conserving-wildlife-in-india/
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