  The third edition of the "international - Traveling Workshop on Interactions
between Sparse models and Technology" (iTWIST) took place in Aalborg, the 4th
largest city in Denmark situated beautifully in the northern part of the
country, from the 24th to 26th of August 2016. The workshop venue was at the
Aalborg University campus. One implicit objective of this biennial workshop is
to foster collaboration between international scientific teams by disseminating
ideas through both specific oral/poster presentations and free discussions. For
this third edition, iTWIST'16 gathered about 50 international participants and
features 8 invited talks, 12 oral presentations, and 12 posters on the
following themes, all related to the theory, application and generalization of
the "sparsity paradigm": Sparsity-driven data sensing and processing (e.g.,
optics, computer vision, genomics, biomedical, digital communication, channel
estimation, astronomy); Application of sparse models in non-convex/non-linear
inverse problems (e.g., phase retrieval, blind deconvolution, self
calibration); Approximate probabilistic inference for sparse problems; Sparse
machine learning and inference; "Blind" inverse problems and dictionary
learning; Optimization for sparse modelling; Information theory, geometry and
randomness; Sparsity? What's next? (Discrete-valued signals; Union of
low-dimensional spaces, Cosparsity, mixed/group norm, model-based,
low-complexity models, ...); Matrix/manifold sensing/processing (graph,
low-rank approximation, ...); Complexity/accuracy tradeoffs in numerical
methods/optimization; Electronic/optical compressive sensors (hardware).
