Department of Mathematics

CoSy Lunch Seminar

  • Date: 12/12/2017 at 12:15 PM 1:00 PM
  • Location: Ångströmlaboratoriet, Lägerhyddsvägen 1 Å4003
  • Lecturer: Markos Katsoulakis, University of Massachusetts Amherst, Mathematics & Statistics
  • Organizer: CIM
  • Contact person: Joel Dahne
  • Phone: 0762020507
  • Seminarium

Information Inequalities and model-form Uncertainty Quantification; Speaker: Markos Katsoulakis, University of Massachusetts Amherst, Mathematics & Statistics

12 December
Speaker: Markos Katsoulakis, University of Massachusetts Amherst, Mathematics & Statistics
Title: Information Inequalities and model-form  Uncertainty Quantification
Place: Å4003
Time: 12:15 -- 13:00
Abstract:
In this talk we discuss information theoretic uncertainty quantification methods for probabilistic models in materials, catalysis and related design problems. We first demonstrate how new, tight and scalable information inequalities can provide computable uncertainty quantification (UQ) indices for observables of interest; these indices account for model-form uncertainty in a neighborhood of a baseline model defined via information divergences. We apply these tools in two  problems arising in catalysis and energy research: a) fast sensitivity screening of complex reaction networks with thousands of parameters and  b) quantifying the impact of multiple sources of uncertainty in mesoscale bayesian reaction networks that include electronic structure data. In the latter context and time permitting,  we will also discuss new UQ methods for probabilistic graphical models.