Sponsored by:
Mathematical Signal Processing and Data Analysis
September 18-20, 2017
University of Bremen
Determining the characteristics of data is a crucial part of all data-driven science. Detecting the boundaries of a region of interest in an image, ascertaining trends in time-series data, and uncovering latent variables and the non-linear but dependent relationships between them are just some examples of problems in signal processing and data analysis. Often low complexity modelling, like sparsity/cosparsity assumptions, (non-)linear dimensionality reduction, manifold learning, etc. underlies the analysis. Other approaches are powered by variational methods, neural networks, Bayesian analysis, computational topology, and more.
The goal of this workshop is to bring together researchers of different aspects of mathematical signal processing and data analysis. The workshop aims to address theoretical, applied, and numerical aspects of data analysis. To encourage younger researchers, there will be a poster session and, pending final funding, travel support.
The workshop is an official event of and supported by the DFG Research Training Group 2224 π3 Parameter Identification - Analysis, Algorithms, Applications and also serves as the annual meeting of the GAMM Activity Group Mathematical Signal and Image Processing.
Plenary Speakers
Confirmed:
Ulrich Bauer, Geometry and Visualization, Technische Universität München, Germany
Christine De Mol, European Center for Advanced Research in Economics and Statistics, Université libre de Bruxelles, Belgium (Public lecture at Haus der Wissenschaft)
Monika Dörfler, Numerical Harmonic Analysis Group, Universität Wien, Austria
Barbara Hammer, Machine Learning Group, Universität Bielefeld, Germany
Valeriya Naumova, Section for Computing and Software, Simula, Norway
Steve Oudot, DataShape Team, Inria Saclay and École Polytechnique, Palaiseau, France
Location
The daytime activities will take place in the MZH building on the campus of the University of Bremen. The address of building MZH is Bibliothekstr. 5, 28359 Bremen. The talks will take place in room MZH 1090 and the coffee breaks and poster session in MZH 1100.
The public lecture on Monday evening will be held at Haus der Wissenschaft, Sandstraße 4/5, 28195 Bremen and the conference dinner following the public lecture at Bremer Ratskeller, Am Markt, 28195 Bremen.
Registration
The deadline for submitting a talk or poster has passed. Onsite registration will be available in MZH 1100.
Program
The plenary talks are 60 minutes each and the contributed talks 30 minutes.
The public lecture on Monday evening takes place at Haus der Wissenschaft, Sandstraße 4/5, 28195 Bremen in the city center.
Monday, September 18th
Main Themes: Applied Harmonic Analysis, Variational Methods, and Neural Networks
| 9:00 -- 9:30 | MZH 1100 | Registration |
| 9:30 -- 10:00 | MZH 1090 | Emily King / Rafael Reisenhofer, University of Bremen (Germany): Opening Remarks |
| 10:00 -- 10:20 | MZH 1100 | Coffee Break |
| 10:20 -- 10:50 | MZH 1090 | Stefen Kunis, University of Osnabrück (Germany): Prony's method and applications |
| 10:50 -- 10:55 | -- | Break |
| 10:55 -- 11:25 | MZH 1090 | Benedikt Diederichs, University of Hamburg (Germany): Well-Posedness of Prony's Problem |
| 11:25 -- 11:30 | -- | Break |
| 11:30 -- 12:00 | MZH 1090 | Friedrich Philipp, Catholic University of Eichstätt-Ingolstadt (Germany): Dynamic Sampling in Finite and Infinite Dimensions |
| 12:00 -- 13:30 | -- | Lunch Break |
| 13:30 -- 14:30 | MZH 1090 | Monika Dörfler, University of Vienna (Austria): [Plenary Talk] Inside the Spectrogram: Time-Frequency Analysis meets Convolutional Neural Network |
| 14:30 -- 14:50 | MZH 1100 | Coffee Break |
| 14:50 -- 15:20 | MZH 1090 | Matthias Beckmann, University of Hamburg (Germany): Error Analysis for Filtered Back Projection Reconstructions in Fractional Sobolev Spaces |
| 15:20 -- 15:25 | -- | Break |
| 15:25 -- 15:55 | MZH 1090 | Armin Iske, University of Hamburg (Germany): Image Approximation by Adaptive Thinning |
| 15:55 -- 16:00 | -- | Break |
| 16:00 -- 16:30 | MZH 1090 | Hasan Ayad, Cairo University (Egypt): Encryption Security with Logic Circuits and Chaotic Scrambling |
| 18:00 -- 19:00 | Haus der Wissenschaft | Christine de Mol, Université libre de Bruxelles (Belgium): [Public Lecture] Angels and Demons of Mathematical Imaging |
| 19:15 -- | Ratskeller | Conference Dinner |
Tuesday, September 19th
Main Themes: Sparsity, Compressed Sensing, Dictionary Learning, and Machine Learning I
| 8:30 -- 9:00 | MZH 1100 | Registration |
| 9:00 -- 10:00 | MZH 1090 | Valeriya Naumova, Simula Research Laboratory (Norway): [Plenary Talk] Multi-parameter regularisation for solving unmixing problems in signal processing: theoretical and practical aspects |
| 10:00 -- 10:20 | MZH 1100 | Coffee Break |
| 10:20 -- 10:50 | MZH 1090 | Sandra Keiper, TU Berlin (Germany): Reconstruction of Finite-Valued Sparse Signals |
| 10:50 -- 10:55 | -- | Break |
| 10:55 -- 11:25 | MZH 1090 | Martin Genzel, TU Berlin (Germany): Sparse Recovery From Superimposed Non-Linear Measurements |
| 11:25 -- 11:30 | -- | Break |
| 11:30 -- 12:00 | MZH 1090 | Niklas Wagner, University of Hamburg (Germany): Sparse Approximation of Videos by Adaptive Linear Splines |
| 12:00 -- 13:30 | -- | Lunch Break |
| 13:30 -- 14:30 | MZH 1090 | Barbara Hammer, Universität Bielefeld (Germany): [Plenary Talk] Metric learning in prototype-based models |
| 14:30 -- 15:20 | MZH 1100 | Poster Session & Coffee Break |
| 15:20 -- 15:50 | MZH 1090 | Renato Budinich, University of Göttingen (Germany): A 2D Haar-like Sparse Dictionary Learning Method |
| 15:50 -- 15:55 | -- | Break |
| 15:55 -- 16:25 | MZH 1090 | Delf Lachmund, University of Bremen (Germany): NMF Algorithms for Supervised Learning |
| 16:25 -- 16:30 | -- | Break |
| 16:30 -- 17:00 | MZH 1090 | Kai Brehmer, University of Lübeck (Germany): Non-parametric registration of medical image data using Schatten-q-Norm |
| 19:00 -- | Tendüre Restaurant | Unofficial Conference Dinner (sign up before the lunch break) |
Wednesday, September 20th
Main Themes: Topological Data Analysis and Machine Learning II
| 8:30 -- 9:00 | MZH 1100 | Registration |
| 9:00 -- 10:00 | MZH 1090 | Ulrich Bauer, Technische Universität München (Germany): [Plenary Talk] Persistent homology: from theory to computation |
| 10:00 -- 10:20 | MZH 1100 | Coffee Break |
| 10:20 -- 10:50 | MZH 1090 | Henri Riihimäki, Tampere University of Technology (Finland): Topological Signatures of Data Sets |
| 10:50 -- 10:55 | -- | Break |
| 10:55 -- 11:25 | MZH 1090 | Mijail Guillemard, Technische Universität Hamburg (Germany): On Clifford Algebras, Data Analysis and Persistent Homology |
| 11:25 -- 11:30 | -- | Break |
| 11:30 -- 12:00 | MZH 1090 | Tobias Boskamp, University of Bremen (Germany): Tumor typing of tissue sections based on MALDI mass spectrometry imaging and model based machine learning |
| 12:00 -- 13:30 | -- | Lunch Break |
| 13:30 -- 14:30 | MZH 1090 | Steve Oudot, Inria Saclay and École Polytechnique (France): [Plenary talk] A Gaussian Type Kernel for Persistence Diagrams |
| 14:30 -- 14:50 | MZH 1100 | Coffee Break |
| 14:50 -- 15:20 | MZH 1090 | Vitaliy Kurlin, University of Liverpool (UK): Topological methods for a faster materials discovery |
| 15:20 -- 15:25 | -- | Break |
| 15:25 -- 15:55 | MZH 1090 | Mateusz Juda, Jagiellonian University (Poland): Combinatorial Multivector Fields |
| 15:55 -- 16:00 | -- | Break |
| 16:00 -- 16:30 | MZH 1090 | Tamal Dey, Ohio State University (USA): SimBa: Approximating the Persistence Diagram of Rips Filtration |
| 16:30 -- 16:45 | MZH 1090 | Concluding Remarks |
Travel Information
Arrival in Bremen:
Bremen Hauptbahnhof/Main Train Station: Bremen is well-connected to the rest of Germany and neighboring countries through the Deutsche Bahn rail service. Tram line 6 also travels from the train station to the university.
Bremen Flughafen/Airport: Bremen's airport is served by major airlines like Lufthansa, Air France, and KLM, as well as low cost carriers like Ryan Air. Tram line 6 travels from the airport to the university.
Arrival at the University:
Tram line 6 travels directly to the university from both the Bremen Airport and the main railway station (Hauptbahnhof). Take the tram from either the train station or the airport in direction "Universität". Exit tram line 6 at "Universität / Zentralbereich" to get to the workshop. Talks will take place in the building MZH. It is a high-rise with red base, you pass it just before the streetcar stops. It is circled in the following campus map.
Traveling around Bremen:
The tram system (Straßenbahn) in Bremen is quite convenient. Tram line 6 connects the university, city center (Domsheide), main train station, and airport. Some key information about public transportation in Bremen:
You may buy individual tickets on the tram. Look for the ticket machine that has a slot for cash. The other machines only work with the so-called BOB card. Each individual ticket costs €2.75. "Bremen 100" is the price zone. Tickets bought on the tram are automatically canceled. That is, they must be immediately used. You cannot buy tickets on a tram to use in the future. Warning: The ticket machines in the tram usually do not allow you to use a €20 bill or sometimes even a €10 bill to purchase a single ticket.
For those arriving at the airport: You can buy single tickets and 4 packs (at a discounted rate) at the parking / information booth in the middle of the entry hall. If it is closed, then there is a machine (BSAG-Automat) where you can buy tickets.
For those arriving at the train station: You can buy single tickets and 4 packs (at a discounted rate) at any of the ticket machines.
If you ride a night line (denoted with an 'N'), then you must pay an additional fee (Nachtlinien-Zuschlag) no matter what ticket you already have / buy. These tickets can be purchased on the tram.
Accomodation
Hotel Munte: Hotel Munte is within walking distance of the University of Bremen campus and located across the street from the beautiful Bürgerpark. Nearby dining options, however, are limited. We currently have a block of 20 rooms reserved there for the conferece. Single occupancy rooms cost 97€ and double occupancy 119€. Please mention the GAMM-MSIP workshop when booking your room. The deadline to book is August 17.
Novum Hotel Bremer Haus Bremen: The Novum Hotel is within walking distance of the Hauptbahhof/tram line 6 (which goes to the university and the airport), the city center (which is a UNESCO World Heritage Site and where the evening lecture on September 18 will be held), and the Viertel (where Bremen nightlife is located). We currently have a block of 20 rooms reserved there for the conferece. Single occupancy rooms cost 64€. The cost includes breakfast. Please mention the GAMM-MSIP workshop when booking your room. The deadline to book is August 18.
If there are no remaining rooms at your desired hotel, please contact Katie Lorenz, kalorenzAmathDuni-bremenDde. She can also assist you with any other questions you have concerning the lodging.
Organizers
- Emily J. King, AG Computational Data Analysis / RTG π3
- Rafael Reisenhofer, AG Computational Data Analysis
- Yovany Cordero, AG Technomathematik / RTG π3
- Frank Weilandt, Institute for Algebra, Geometry, Topology and their Applications / RTG π3
Support Staff: Kathryn Lorenz, kalorenz AT math DOT uni-bremen DOT de