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SUMMARY:Clement Royer (UBC-O hosted\, on-line only) (Université Paris Dau
 phine-PSL)
DTSTART:20250729T180000Z
DTEND:20250729T190000Z
DTSTAMP:20260513T193637Z
UID:SFUOR/56
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/SFUOR/56/">A
  derivative-free method for continuous submodular optimization</a>\nby Cle
 ment Royer (UBC-O hosted\, on-line only) (Université Paris Dauphine-PSL) 
 as part of PIMS-CORDS SFU Operations Research Seminar\n\nLecture held in A
 SB 10908.\n\nAbstract\nSubmodular functions are a classical concept of dis
 crete optimization\, that can also be extended to the\ncontinuous setting.
  In particular\, the class of continuous submodular functions encompasses 
 some\nnonconvex functions arising in natural language processing\, which p
 artly explains renewed interest for\nthis topic in recent years.\n\nIn thi
 s talk\, I will describe a derivative-free algorithm for continuous submod
 ular optimization\nover compact sets\, adapted from a classical framework 
 for bound-constrained derivative-free\noptimization. The first part will f
 ocus on theoretical (complexity) guarantees for the proposed method\,\nwhi
 ch departs from the general nonconvex setting. The second part will illust
 rate the practical\nperformance of our algorithm on continuous submodular 
 tasks. Time permitting\, I will also discuss the\ndiscrete submodular case
 .\n
LOCATION:https://researchseminars.org/talk/SFUOR/56/
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