Events

Here you can find upcoming and past events organized by our group.

Event Information:

  • Thu
    22
    Jun
    2017

    SC Seminar: Marc Pfetsch

    11:30SC Seminar Room 32-349

    Prof. Marc Pfetsch, Research Group Optimization, TU Darmstadt

    Title:
    Compressed Sensing and Discrete Optimization

    Abstract:

    The goal of this talk is to give an overview on compressed sensing from an discrete optimization/geometry point of view. The main problem in compressed sensing – the sparse representation problem – is to find the sparsest solutions of underdetermined linear equation systems. This problem is computationally hard, but can be efficiently solved by a linear program if certain conditions are satisfied. The talk will review some well known conditions and show that they are computationally hard to check. Moreover, the solution of this problem to global optimality will be discussed. The next step consists of presenting results on the unique recovery of integer solutions. Of course, even obtaining some feasible solution is hard in this case. Nevertheless, the potential of investing computational resources to obtain optimal solutions will be discussed.