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Dr. rer. nat. Andreas Tillmann


Research Assistant
    • RWTH Aachen University
    • Chair of Operations Research
    • Kackertstraße 7
    • 52072 Aachen
    •  
  • Email: tillmann(at)or.rwth-aachen.de
  • Fax: +49 241 80 92369
    • Office: B245
    •  


About


I am a PostDoc at the Visual Computing Institute (see my Opens external link in new windowhomepage there) and the Chair of Operations Research, and head the "Data" unit of the profile area Opens external link in new windowCompSE (Computational Science and Engineering) of RWTH Aachen University. I received my doctoral degree from TU Darmstadt in December 2013, and was an interim/visiting professor of mathematical optimization at TU Braunschweig in winter 2014/15.

My research interests focus on theoretical and practical aspects of optimization and complexity theory in areas like compressed sensing, signal and image processing, machine learning, and (discrete) geometrical problems. I am affiliated with the project Opens external link in new window"EXPRESS – EXploiting structure in comPREssed Sensing using Side constraints" within the DFG priority program Opens external link in new windowCoSIP ("Compressed Sensing in Information Processing", SPP 1798).

You can also find me on Opens external link in new windowGoogle Scholar and on Opens external link in new windowResearch Gate.

Publications


  • A.M. Tillmann, Y.C. Eldar and J. Mairal (2016).
    Dictionary Learning from Phaseless Measurements. Proc. ICASSP 2016. pp. 4702-4706. [doi] [bib]
  • A.M. Tillmann, Y.C. Eldar and J. Mairal (2016).
    DOLPHIn – Dictionary Learning for Phase Retrieval. IEEE Transactions on Signal Processing 64 (24) (2016-): 6485-6500. [doi] [bib] [ArXiv]
  • D.A. Lorenz, M.E. Pfetsch and A.M. Tillmann (2015).
    Solving Basis Pursuit: Heuristic Optimality Check and Solver Comparison. ACM Transactions on Mathematical Software 41 (2) (2015-): [doi] [bib]
  • A.M. Tillmann (2015).
    On the Computational Intractability of Exact and Approximate Dictionary Learning. IEEE Signal Processing Letters 22 (1) (2015-): 45-49. [doi] [bib] [ArXiv]
  • A.M. Tillmann (2015).
    Equivalence of Linear Programming and Basis Pursuit. Proc. in Applied Mathematics and Mechanics 15 (1) (2015-): 735-738. [doi] [bib]
  • A.M. Tillmann and M.E. Pfetsch (2014).
    The Computational Complexity of the Restricted Isometry Property, the Nullspace Property, and Related Concepts in Compressed Sensing. IEEE Transactions on Information Theory 60 (2) (2014-): 1248-1259. [doi] [bib] [ArXiv]
  • D.A. Lorenz, M.E. Pfetsch and A.M. Tillmann (2014).
    An Infeasible-Point Subgradient Method Using Adaptive Approximate Projections. Computational Optimization and Applications 57 (2) (2014-): 271-306. [doi] [bib] [ArXiv]
  • A.M. Tillmann, R. Gribonval and M.E. Pfetsch (2014).
    Projection Onto The Cosparse Set is NP-Hard. Proc. ICASSP 2014. pp. 7148-7152. [doi] [bib] [ArXiv]
  • A.M. Tillmann (2013).
    Computational Aspects of Compressed Sensing. Doctoral Dissertation, TU Darmstadt [www] [bib]
  • S. Wenger, M. Ament, S. Guthe, D. Lorenz, A.M. Tillmann, D. Weiskopf and M. Magnor (2012).
    Visualization of Astronomical Nebulae via Distributed Multi-GPU Compressed Sensing Tomography. IEEE Transactions on Visualization and Computer Graphics 18 (12) (2012-): 2188-2197. [doi] [bib]