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DTSTART;TZID=Europe/Berlin:20180122T160000
DTEND;TZID=Europe/Berlin:20180122T180000
DTSTAMP:20171213T084948Z
CREATED:20171011T122606Z
LAST-MODIFIED:20171213T084948Z
UID:1513-1516636800-1516644000@alop.uni-trier.de
SUMMARY:ALOP-Colloquium with Prof. Andrea Walther
DESCRIPTION:On Monday\, January 22\, 2018\, at 16:00 Prof. Andrea Walther of Paderborn University will join the ALOP-Colloquium and present her recent work entitled: \nRecent progress in the optimization of piecewise smooth functions \nIn a previous paper\, we derived first and second order convexity conditions for a large class  of piecewise smooth functions. \nIn that analysis based on piecewise linearization\, a key assumption was the Linear Independence Kink Qualification (LIKQ)\, a generalization of the Linear Independence Constraint Qualification (LICQ) known from smooth nonlinear optimization. In this talk\, we discuss recent results for the optimization of this class of functions. \nThis includes that even without any kink qualifications\, local optimality of the nonlinear objective always requires local optimality of its piecewise linearization\, and strict minimality of the latter is in fact equivalent to strong local minimality of the former.  Moreover\, we analyse convergence rates for an optimization algorithm based on successive piecewise linearization. Numerical results illustrate the theoretical findings. \n  \nThis is joint work with Andreas Griewank\, Yachay Tech\, Ecuador \n  \nThe presentation will take place in HS9. \nPlease join us for coffee at 15:45 in E10.
URL:https://alop.uni-trier.de/event/alop-colloquium-with-prof-andrea-walther/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Colloquium
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
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