![]() |
COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring. | ![]() |
University of Cambridge > Talks.cam > Microsoft Research Machine Learning and Perception Seminars > On a first-order primal-dual algorithm with applications to convex problems in computer vision
On a first-order primal-dual algorithm with applications to convex problems in computer visionAdd to your list(s) Download to your calendar using vCal
If you have a question about this talk, please contact Microsoft Research Cambridge Talks Admins. In the first part of the talk I give new results for a first-order primal-dual algorithm to solve non-smooth convex optimization problems with known saddle-point structure. I show that the algorithm converges to a saddle-point with rate O(1/N) for the complete class of problems. Furthermore, I show that we can get better convergence rates on problems with more regularity. In the second part of the talk, I discuss new preconditioning techniques for the algorithm. In particular, I propose a family of simple and easy to compute diagonal preconditioners for which convergence of the algorithm is guaranteed without the need to compute any step size parameters. In the third part of the talk I demonstrate the improved performance of the algorithm by applying it to standard linear programming test problems and a few standard computer vision problems such as image restoration, graph cuts, multi-label image segmentation and optical flow. (Joint work with Antonin Chambolle, CMAP , Ecole Polytechnique) This talk is part of the Microsoft Research Machine Learning and Perception Seminars series. This talk is included in these lists:
Note that ex-directory lists are not shown. |
Other listsCUSAS Forum Speaker Series Immunology and Medicine Seminars Cambridge Public Policy WorkshopsOther talksEurostar with Philippe Mouly A continuum theory for the fractures in brittle and ductile solids Grammar Variational Autoencoder Modular Algorithm Analysis Trees as keys, ladders, maps: a revisionist history of early systematic trees Production Processes Group Seminar - 'Re-thinking biosensors for resource-limited settings' |