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PRODID:-//Columba Systems Ltd//NONSGML CPNG/SpringViewer/ICal Output/3.3-
 M3//EN
VERSION:2.0
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20261020T090715Z
DTSTART:20261021T140000Z
DTEND:20261021T150000Z
SUMMARY:SQUIDS Seminar: Sean Holman
UID:{http://www.columbasystems.com/customers/uom/gpp/eventid/}wde-mvggma5
 8-j6cjl1
DESCRIPTION:Speaker: Sean Holman (University of Manchester)\n\nTitle: Con
 fidence intervals for Landweber reconstruction using randomised normal o
 perator approximation\n\nAbstract: We analyse the propagation of error t
 hrough the Landweber iteration\, establishing confidence regions with st
 atistical coverage guarantees. For large problems\, calculation of the c
 onfidence regions is prohibitively expense\, and to make this feasible w
 e introduce randomised approximation of the normal operator. This approx
 imation also adds a second layer of regularisation\, which avoids excess
 ively large confidence regions. We are motivated by X-ray CT and provide
  some numerical experiments\, calculating reconstructions with confidenc
 e intervals\, in that context. \n\nThis is based on joint work with Anuj
  Abhishek.
STATUS:TENTATIVE
TRANSP:TRANSPARENT
CLASS:PUBLIC
LOCATION:G.205\, Alan Turing Building\, Manchester
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