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GERAD Seminar – A distributed Jacobi algorithm for large-scale constrained convex optimization

May 29, 2017 from 10:30 to 11:30

Dang Doan – University of Freiburg, Germany

We consider sparse convex optimization problems, under general affine constraints. There are couplings between variables in both the cost function and constraints of the optimization problem. We propose a distributed Jacobi algorithm to solve this problem in a cooperative manner. Using a local update in each iteration which is equivalent to a convex combination of new local solutions and old iterates, the Jacobi algorithm guarantees to achieve feasible solutions at every iteration. We provide the a posteriori certification for centralized optimality of distributed solutions, and a priori conditions that guarantee convergence to optimality in several problem settings. The proposed approach is useful for distributed model predictive control applications where feasibility is an important requirement. It fosters distributing the computations, especially in settings with a large number of subsystems, a sparse coupling structure, and local communication is available.

This seminar is presented by the Group for Research in Decision Analysis (GERAD).
Free entrance. Welcome to everyone!


Venue

André-Aisenstadt Building
Université de Montréal Campus
2920, chemin de la Tour
Montréal QC H3T 1J4
Université de Montréal
Room 4488



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