BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Drupal iCal API//EN X-WR-CALNAME:Events items teaser X-WR-TIMEZONE:America/Toronto BEGIN:VTIMEZONE TZID:America/Toronto X-LIC-LOCATION:America/Toronto BEGIN:DAYLIGHT TZNAME:EDT TZOFFSETFROM:-0500 TZOFFSETTO:-0400 DTSTART:20210314T070000 END:DAYLIGHT BEGIN:STANDARD TZNAME:EST TZOFFSETFROM:-0400 TZOFFSETTO:-0500 DTSTART:20201101T060000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:68326d84dd444 DTSTART;TZID=America/Toronto:20210910T153000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Toronto:20210910T153000 URL:/combinatorics-and-optimization/events/tutte-colloq uium-jane-ye SUMMARY:Tutte Colloquium - Jane Ye CLASS:PUBLIC DESCRIPTION:Summary \n\nTITLE: On solving bilevel programming problems\n\n Speaker:\n Jane Ye\n\nAffiliation:\n University of Victoria\n\nZoom:\n Ple ase email Emma Watson\n\nABSTRACT:\n\nA bilevel programming problem is a sequence of two optimization\nproblems where the constraint region of the upper level problem is\ndetermined implicitly by the solution set to the l ower level problem.\nIt can be used to model a two-level hierarchical syst em where the two\ndecision makers have different objectives and make their decisions on\ndifferent levels of hierarchy. Recently more and more appli cations\nincluding those in machine learning have been modelled as bilevel \noptimization problems. In this talk\, I will report some recent\ndevelop ments in optimality conditions and numerical algorithms for\nsolving this class of very difficult optimization problems.\n DTSTAMP:20250525T010820Z END:VEVENT END:VCALENDAR