Research lectures, seminars and events
The events listed in this area are research seminars, workshops and lectures hosted by Durham University departments and research institutes. If you are not a member of the University, but wish to enquire about attending one of the events please contact the organiser or host department.
|January 2020||March 2020|
Events for 26 February 2020
Approximate Bayesian Computation (ABC) has become a valuable tool for Bayesian Uncertainty Quantification, as it enables inference to be made even when the likelihood is intractable. ABC methods can produce unreliable inference when they introduce high approximation bias into the posterior through careless specification of the ABC kernel. Additionally MCMC-ABC methods often suffer from the local trapping problem which causes poor mixing when the tolerance parameter is low. We introduce a new ABC algorithm, the Stochastic Approximation Monte Carlo ABC (SAMC-ABC), which enables Bayesian Uncertainty Quantification in increasingly complex systems where inference was previously unreliable. SAMC-ABC adaptively constructs the so called ABC kernel, both reducing the approximation bias and providing immunity to the local trapping problem. We demonstrate the performance of the proposed algorithm with some benchmark examples and find that the method outperforms its competitors. We use our algorithm to analyse a computer model which describes the transmission of the Ebola virus against data from the 2014-15 Ebola outbreak in Liberia.
Research Seminar: Educational Values, Narratives and Outcomes: Alignments and Disjunctures in Bhutan
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Dr. Sturt Manning: Iroquoia, and Mediterranean radiocarbon offsets and calendar dates for Prehistory
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Salvador Ryan: The Materiality of Christian Pilgrimage, Medieval to Modern: Reflections From a Church Historian and Sometime Pilgrim
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IAS Fellow's Public Lecture - Natural Phenomena as Media: Challenging Perception and Experience Through Multimedia Artworks
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