69 citations · 162 across the 10 of their papers we have counts for
11 papers
Extended Successive Convex Approximation for Phase Retrieval with Dictionary Learning
Tianyi Liu, Andreas M. Tillmann, Yang Yang +2
Phase retrieval aims at reconstructing unknown signals from magnitude measurements of linear mixtures. In this paper, we consider the phase retrieval with dictionary learning probl…
Cardinality Minimization, Constraints, and Regularization: A Survey
Andreas M. Tillmann, Daniel Bienstock, Andrea Lodi +1
We survey optimization problems that involve the cardinality of variable vectors in constraints or the objective function. We provide a unified viewpoint on the general problem cla…
Exact separation of forbidden-set cuts associated with redundant parity checks of binary linear codes
Christian Puchert, Andreas M. Tillmann
In recent years, several integer programming (IP) approaches were developed for maximum-likelihood decoding and minimum distance computation for binary linear codes. Two aspects in…
Structured Discrete Shape Approximation: Theoretical Complexity and Practical Algorithm
Andreas M. Tillmann, Leif Kobbelt
We consider the problem of approximating a two-dimensional shape contour (or curve segment) using discrete assembly systems, which allow to build geometric structures based on limi…
Joint Antenna Selection and Phase-Only Beamforming Using Mixed-Integer Nonlinear Programming
Tobias Fischer, Ganapati Hegde, Frederic Matter +3
In this paper, we consider the problem of joint antenna selection and analog beamformer design in downlink single-group multicast networks. Our objective is to reduce the hardware…
A Primal-Dual Homotopy Algorithm for -Minimization with -Constraints
Christoph Brauer, Dirk A. Lorenz, Andreas M. Tillmann
In this paper we propose a primal-dual homotopy method for -minimization problems with infinity norm constraints in the context of sparse reconstruction. The natural homoto…