Heidelberg Graduate School HGS MathComp

HGS MathComp Events

WS 12/13SS 13WS 13/14SS 14WS 14/15SS 15WS 15/16SS 16WS 16/17SS 17WS 17/18
Workshops
info  Laufworkshop Gabriele Braun March 10, 2016 and April 14, 2016 ECTS-Points: not yet determined
Link for more information Location:
Mathematikon, Im Neuenheimer Feld 205, 5. Stock, Seminarraum 10
Time:
9:00
ECTS-Points:
not yet determined
info  Steuertipps für Masterstudenten & Doktoranden Michael Müller, Diplom-Volkswirt January 14, 2016, 16:00-19:00 ECTS-Points: 0
Abstract, registration & information:
Manche Studien behaupten: Der Steuerspartrieb der Deutschen ist stärker ausgeprägt als der Sexualtrieb. Nun haben Studenten im Studium nur selten Steuerabgaben zu leisten, aber dafür eine Vielzahl an Studienkosten (z.B. für den Laptop, für Lehrmaterialien, Fahrtkosten,Telefon, Miete u.v.m.). Und diese Ausgaben können vom Finanzamt zurückgeholt werden, spätestens ab dem Zeitpunkt in dem Steuern anfallen. Erfahrungsgemäß bedeutet das im ersten Berufsjahr eine Steuererstattung in 4-stelliger Höhe.

Darüber hinaus gibt es auch wirtschaftliche Themen, die im Studium / Promotion bewegt werden sollten und die eine immer wiederkehrende Steuererstattung ermöglichen. Dies wird ebenfalls aufgezeigt.

Nach dem Training werden die Teilnehmer:
-die Vorgehensweise kennen, wie sie ihre Studienkosten rückerstattet bekommen.
-für sich wichtige Themen erkennen und einen der größten Steuerhebel nutzen können.
-wissen, wie sie einen Verlustvortrag generieren und Werbungskosten und Sonderausgaben steueroptimiert einordnen können.

Anmeldung bitte hier
Location:
IWR, Room 432, Im Neuenheimer Feld 368, 69120 Heidelberg
Time:
16:00
ECTS-Points:
0
info  Advances in discontinuous Galerkin Methods and related topics Various December 14-16, 2015 ECTS-Points: not yet determined
Link for more information Location:
IWH, Hauptstrasse 242 69117 Heidelberg
Time:
8:45
ECTS-Points:
not yet determined
info  Cryptoparty NoName e.V. Dienstag, 24.11.2015 und Mittwoch 09.12.2015; jeweils 18:30 ECTS-Points: 0
Link for more information Location:
Im Neuenheimer Feld 368, Raum 432
Time:
18:30
ECTS-Points:
0
info  Financial Education - Strategie schlägt Zufall Michael Müller, Diplom-Volkswirt October 28, 2015, 16:00-19:00 Uhr ECTS-Points: not yet determined
Abstract, registration & information:
Please register here
Abstract (PDF)
Location:
IWR, Raum 520, Im Neuenheimer Feld 368, 69120 Heidelberg
Time:
16:00
ECTS-Points:
not yet determined
info  Probabilistic Graphical Models Workshop 2015 Various October, 22 - 23, beginning lunchtime Thursday ending lunchtime Friday ECTS-Points: 0
Abstract, registration & information:
Probabilistic graphical models provide a consistent framework for the statistical modeling and the computational analysis of scientific empirical data. The past decade has witnessed a significant increase in respective research in the field of image analysis and related application areas, driven by the synergy between statistics, pattern recognition, computer vision and machine learning. The objective is to devise models that enable to infer a coherent global interpretation of noisy and ambiguous local image measurements, taking into account spatiotemporal context in images and videos, and domain-specific contextual knowledge.

Applications of probabilistic graphical models to such large-scale problems raise numerous research problems of modeling and algorithm design for inference and learning, requiring interdisciplinary expertise in applied mathematics, computer science and physics, besides a profound knowledge of the respective application areas.

The basic intention of the Research Training Group is to gather experts from these fields and to establish a coherent research and study program on probabilistic graphical models, with a focus on spatial and spatiotemporal models and their applications in image analysis. The project treats methodological basic research on an equal footing with challenging scientific applications of image analysis in environmental science, life sciences and industry.

The Research Training Group will provide a scientifically unique environment for study, collaboration and innovative research on probabilistic graphical models across disciplines, producing highly-qualified candidates for research careers in academia and industry.

Confirmed speakers:

Mario A. T. Figueiredo, Instituto Superior Técnico, Lisboa, Portugal
Victor Lempitsky, Skoltech Computer Vision, Moskau, Russia
Raquel Urtasun, University of Toronto, Toronto, Canada
Max Welling, University of Amsterdam, Amsterdam, Netherlands

Please register free of charge here by September 30, 2015.
Link for more information
Location:
HCI, Speyerer Str. 6, 2nd floor, room H 2.22
Time:
12:30
ECTS-Points:
0
info  Traffic Optimization Various October 8, 2015, 09:00 ECTS-Points: 0
Abstract, registration & information:
Traffic optimization is a big field related to many subjects, such as, mathematics, computer science, or physic. In big cities, people are suffering from traffic problems, for example traffic jams, traffic accidents. Thus, improving traffic systems in urban areas becomes more and more important. The 1-day workshop on "Traffic Optimization" is organized by the research group for Discrete and Combinatorial Optimization on 8th October, 2015. The workshop aims at addressing the many aspects of traffic optimization, in particular in urban environments. The main purpose is to introduce the field to general audience. There are about 6-8 experts coming from Germany, Italy, Hungary, and Spain. Each one will give a 45-minutes talk about some topics as followings:

- Routing problems, such as shortest path, dissimilar paths, etc.
- Traffic assignment modeling
- Traffic simulation

More information are available in the webpage.
Link for more information
Location:
IWR, Room 432, Im Neuenheimer Feld 368, 69120 Heidelberg
Time:
9:00
ECTS-Points:
0
Events
info  Recent Achievements in Robotic Bipedal Locomotion in Novi Sad Prof. Branislav Borovac February 16, 2016, 15:00 ECTS-Points: not yet determined
Abstract, registration & information:
Speaker: Prof. Branislav Borovac, Mechatronics, Robotics and Automation, University of Novi Sad, Serbia

This talk is part of the ORB Oberseminar that for this week has been shifted to: Tuesday, Feb 16, 2016 at 15:00 at Speyerer Str. 6, room H2.22
Location:
HCI, room H2.22, Speyerer Str. 6, 69115 Heidelberg
Time:
15:00
ECTS-Points:
not yet determined
info  Herausforderungen der Mayaschrift Dr. Christian Prager 3. Februar 2016, 13:15 ECTS-Points: not yet determined
Abstract, registration & information:
Im Rahmen des Forschungsprojekts "Textdatenbank und Wörterbuch des Klassischen Maya" wird derzeit eine maschinenlesbare Annotation der Hieroglyphentexte auf der Grundlage von XML TEI konzipiert und entworfen. Ziel des strukturierten Markups der Mayaschrift ist es die Struktur der Originalschreibung und die Anordnung der Zeichen im Text möglichst genau mit Hilfe von TEI XML abzbilden. Bei partiell entzifferten Mayaschrift kommt das Problem hinzu, dass anstelle von Transliterationen und Transkriptionen unentzifferte Zeichen oder Textstellen mit Hilfe von Codes und Nomenklaturen wiedergegeben werden müssen um auf dieser Grundlage fragliche Zeichen in ihrem jeweiligen Verwendungskontext zu dokumentieren. Die Dokumentation der Originalschreibung ist grundlegend für die epigraphische Arbeit mit syllabischen und logo-syllabischen Hieroglyphen- und Keilschriftsystemen. Unser Projekt hat hier ein Desiderat für die vergleichende Schriftforschung erkannt und möchte in Zusammenarbeit mit Experten für kompexe Schriftsysteme Lösungen auf der Grundlage von XML TEI und Epidoc erabeiten. Im Rahmen des Vortrags in Heidelberg stellen wir die Probleme und Herausforderungen bei der Annotation der Mayaschrift vor.

Auf Grund der begrenzten Platzkapazität wird um Anmeldung per Doodle gebeten.
Location:
IWR, Raum 532, Im Neuenheimer Feld 368, 69120 Heidelberg
Time:
13:15
ECTS-Points:
not yet determined
info  Digitale Epigraphik - Die Erforschung der Hieroglyphentexte und Bildbotschaften der Maya in der virtuellen Forschungsumgebung TextGrid Prof. Nikolai Grube 3. Februar 2016, 14:00 ECTS-Points: not yet determined
Abstract, registration & information:
Die nur teilweise entzifferte Hieroglyphenschrift und Sprache der Mayakultur steht im Mittelpunkt eines Forschungsprojektes der NRW Akademie der Wissenschaften, das in Kooperation zwischen den Universitäten Bonn und Göttingen durchgeführt wird. Ziel ist die Erstellung einer Textdatenbank und ein darauf basierendes Wörterbuchs des Klassischen Maya. Im Rahmen des Projekts werden die Text- und Bildträger systematisch und nach einheitlichen Standards beschrieben, das Ausgangsmaterial auf der Basis von XML maschinenlesbar gemacht und auf diese Weise die Grundlagen für die Kompilation des Wörterbuchs geschaffen. Dieses Unterfangen wird mit Methoden und Technologien aus den digitalen Geisteswissenschaften in Angriff genommen. Wesentliche Voraussetzung ist dabei, dass nicht nur der sprachliche Inhalt der Inschriften und die ikonischen Informationen der Bilddarstellungen, sondern auch Daten über den Inschriften- und Bilddträger (Beschreibungs- oder Metadaten) berücksichtigt und in einer Datenbank angelegt werden. Zu diesem Zweck werden in TextGrid Tools und Workflows entwickelt, welche die I. Dokumentation der Schrift- und Bildträger mit Aufarbeitung des Forschungsstandes, II. die epigraphisch-linguistische Auswertung der Hieroglyphentexte sowie III. Edition der Texte mit Transliteration, Transkription und Übersetzung in einem einzigen System ermöglichen. Die VRE enthält nicht nur Beschreibungen der Textträger oder Informationen die Texte, sondern der Datenbanknutzer bekommt mit Hilfe der Literaturdatenbank auch einen Überblick darüber, welche Autoren sich mit einem Monument befasst oder es publiziert haben, eine Textpassage diskutiert oder erstmals eine bis heute gültige sprachliche Lesung einer Hieroglyphe präsentiert haben. Der Textträger erhält dadurch eine ‚Biographie‘, die eng mit dem Textinhalten verwoben ist und bei der Bedeutungsanalyse von Wörtern berücksichtigt wird.

Auf Grund der begrenzten Platzkapazität wird um Anmeldung per Doodle gebeten.
Location:
IWR, Raum 532, Im Neuenheimer Feld 368, 69120 Heidelberg
Time:
14:00
ECTS-Points:
not yet determined
info  Multiphysics, Multiscale Simulations of the Formation of Stars and Planets Prof. Mordecai-Mark Mac Low January 20, 2015, 16:15 ECTS-Points: not yet determined
Abstract, registration & information:
The formation of stars and their accompanying planets occurs in a dynamic environment in which larger scales couple to smaller scales all the way from the infall of gas from the cosmic web into galaxies down to the accumulation of dust to form planetesimals within protostellar disks. To understand the origins of our own Solar System and the observed populations of stars and planets requires simulations that capture the interactions between these scales while modeling the dominant physical and chemical processes at each scale. (Whether these set the stage for biological processes elsewhere is, of course, one of the great unanswered scientific questions.) In this talk I will review my group’s work on such simulations, using multiple numerical techniques.
Abstract (PDF)
Link for more information
Location:
IWR, Room 432, Im Neuenheimer Feld 368, 69120 Heidelberg
Time:
16:15
ECTS-Points:
not yet determined
info  10. Modellierungstag Rhein-Neckar “Open Data“ Various Speakers 3. Dezember 2015, 14:00 ECTS-Points: not yet determined
Abstract, registration & information:
Wir haben die Daten - nutzen wir sie!

Nach Public Domain und Open Source ist Open Data ein weiteres Buzzword, das den Zugang zu digitalen Ressourcen thematisiert.

- Public Domain ist die Idee, Programme kostenfrei zu vertreiben. Sie stammt aus der Urzeit der Programmierung. Viele hochwertige Anwendungen sind daraus entstanden.

- Open Source ist der nächste wichtige Meilenstein, denn erst die Freilegung des Quellcodes garantiert, dass Programme transparent werden und viele Entwickler freie Software stetig verbessern können. Mit Linux hat sich das heute erfolgreichste Server-Betriebssystem dieser Idee verschrieben.

- Open Data ist die logische Weiterentwicklung. Vor allem in Verwaltungsorganen, aber auch in öffentlich geförderten Forschungsprojekten oder in Krankenhäusern werden ständig große Datenmengen erzeugt. Diese Daten frei und umfassend zugänglich zu machen, ist die Idee hinter Open Data.

Dieses Konzept ist bestechend: Wenn die Allgemeinheit auf diese mit öffentlichem Geld geförderten Daten vollen Zugriff hat, kann auf vielfältige Weise ein gänzlich neuer Mehrwert entstehen. Aus diesem Ansatz ergeben sich Chancen und Risiken, die wir am Modellierungstag offen diskutieren wollen.

- Grundsätze bei der Publikation von Open Data

- Vorteile und Nachteile von Open Data für Unternehmen

- Qualitätssicherung in Open Data Projekten

- Geschäftsmodelle auf Basis offener Daten

Zu diesen und weiteren Themen erwarten wir interessante Vorträge aus Wissenschaft und Wirtschaft. Auch die öffentliche Verwaltung ist zum Dialog rund um dieses Thema herzlich eingeladen, hängt doch Open Data eng mit Open Government, dem Konzept der offenen Beteiligung der Zivilgesellschaft an der Verwaltung, zusammen.
Link for more information
Location:
Print Media Academy, Kurfürstenanlage 52-60, 69115 Heidelberg
Time:
14:00
ECTS-Points:
not yet determined
info  Sparsity and inverse problems: a tale of splines and innovations Prof. Michael Unser December 2, 2015, 16:15 ECTS-Points: not yet determined
Abstract, registration & information:
We start with a brief historical account of inverse problems in imaging. We highlight the emergence of the concept of sparsity, which opened the door to the resolution of more difficult image reconstruction problems, including compressed sensing. We then show the optimality of splines for solving problems with total-variation (TV) regularization constraints, which concludes the deterministic part of our story.
Next, we introduce a statistical formulation in which signals are modeled as sparse stochastic processes. These latter entities (including splines) are solutions of non-Gaussian stochastic differential equations and are intrinsically sparse in the sense that they admit a concise representation in a matched wavelet basis. The formalism is applied to the discretization of ill-conditioned linear inverse problems where both the statistical and physical measurement models are projected onto a linear reconstruction space. This leads to the specification of a general class of maximum a posteriori (MAP) signal estimators complemented with a practical iterative reconstruction scheme. While the framework is backward compatible with the traditional methods of Tikhonov and TV, it opens the door to a much broader class of potential functions that are inherently sparse, while it also suggests alternative Bayesian recovery procedures. The approach is illustrated with the reconstruction of images in a variety of modalities including deconvolution microscopy, phase-contrast tomography, and refractive-index microscopy.

Biography:
Michael Unser is professor and director of EPFL_s Biomedical Imaging Group, Lausanne, Switzerland. His primary area of investigation is biomedical image processing. He is internationally recognized for his research contributions to sampling theory, wavelets, the use of splines for image processing, stochastic processes, and computational bioimaging. He has published over 250 journal papers on those topics. He is the author with P. Tafti of the book "An introduction to sparse stochastic processes", Cambridge University Press 2014.
From 1985 to 1997, he was with the Biomedical Engineering and Instrumentation Program, National Institutes of Health, Bethesda USA, conducting research on bioimaging.
Dr. Unser has held the position of associate Editor-in-Chief (2003-2005) for the IEEE Transactions on Medical Imaging. He is currently member of the editorial boards of SIAM J. Imaging Sciences, IEEE J. Selected Topics in Signal Processing, and Foundations and Trends in Signal Processing. He co-organized the first IEEE International Symposium on Biomedical Imaging (ISBI_2002) and was the founding chair of the technical committee of the IEEE-SP Society on Bio Imaging and Signal Processing (BISP).
Prof. Unser is a fellow of the IEEE (1999), an EURASIP fellow (2009), and a member of the Swiss Academy of Engineering Sciences. He is the recipient of several international prizes including three IEEE-SPS Best Paper Awards and two Technical Achievement Awards from the IEEE (2008 SPS and EMBS 2010).
Abstract (PDF)
Link for more information
Location:
IWR, Room 432, Im Neuenheimer Feld 368, 69120 Heidelberg
Time:
16:15
ECTS-Points:
not yet determined
info  Numerical methods for phase-field fracture propagation Dr. Thomas Wick November 11, 2015, 16:15 ECTS-Points: not yet determined
Abstract, registration & information:
Currently, fracture propagation is a major topic in applied mathematics and engineering. It seems to turn out that one of the most promising methods is based on a variational setting and more specifically on a thermodynamically consistent phase-field model. Here a smoothed indicator function determines the crack location and is characterized through a model regularization parameter. In addition, modeling assumes that the fracture can never heal, which is imposed through a temporal constraint, leading to a variational inequality system.
The basic fracture model problem is augmented with several hints and discussions of serious challenges in developing numerical methods for fracture propagation. Key aspects are robust and efficient algorithms for imposing the previously mentioned crack irreversibility constraint, an heuristic solution of the otherwise indefinite Jacobian matrix, computational analysis of the interplay of model and discretization parameters, goal-functional evaluations, coupling to other multiphyics problems such as fluid-filled fractures in porous media, and steps towards high performance computing for tackling practical field problems.
Location:
URZ, Seminar Room 215, Im Neuenheimer Feld 293, 69120 Heidelberg
Time:
16:15
ECTS-Points:
not yet determined
info  HGS MathComp von Neumann Lecture: The changing Role of Simulation - From Mathematics to CAE Democratization Dr. Dirk Hartmann November 11, 2015, 17:15 ECTS-Points: not yet determined
Abstract, registration & information:
Due to ever increasing product complexity of today_s and tomorrow’s products, the role of simulation is changing rapidly. Without simulation we would not be able to handle the ever growing complexity of our products at the speed innovations are emerging today. Additionally simulation is not only a key technology for engineering but simulation per se is expected to be of a fundamental value customers are paying for, e.g. as an assist system for optimal operation of products, systems, and infrastructures.

In this talk, I provide a short overview on Computer Aided Engineering in an industrial context as well as highlighting three innovation topics exploiting state-of-the-art mathematical research: Interactive Computer Aided Engineering, Plug & Play Multi-X-Simulation, and Simulation-based Assist Systems.
Abstract (PDF)
Location:
IWR, Room 432, Im Neuenheimer Feld 368, 69120 Heidelberg
Time:
17:15
ECTS-Points:
not yet determined
info  Method of multiple shooting for solving the geometric shortest path problem Prof. Phan Thanh November 5, 2015, 14:15 ECTS-Points: not yet determined
Abstract, registration & information:
The geometric shortest path problem: computing approximately the shortest path between two points in a geometric domain such as a simple polygon or on a polytope, is a fundamental problem in computational geometry and is already solved using Steiner points and graph tools on the entire domain.

In this talk I will introduce the method of multiple shooting for solving the problem. It includes the factors: (f1) partition of the domain, (f2) the collinear/straightest condition for the shortest path at shooting points, and (f3) refinement of shooting points. In particular, the method no longer relies on Steiner points and graph tools on the entire domain.

Our corresponding algorithms are implemented in C and comparisons with Lee and Preparata`s algorithm (in a simple polygon) on running time, with Agarwal, Har-Peled, and Karia`s algorithm (on a polytope) on the accuracy of the approximate shortest paths, are presented. This is a joint work with N. N. Hai and T. V. Hoai.
Location:
IWR, Room 432, Im Neuenheimer Feld 368, 69120 Heidelberg
Time:
14:15
ECTS-Points:
not yet determined
info  The Physics and Control of Balancing on a Point Prof. Roy Featherstone October 28, 2015, 16:15 ECTS-Points: not yet determined
Abstract, registration & information:
In the field of robotics, the task of actively balancing on a narrow support, such as a point or line, is usually seen as a control problem; and it has been solved many times using various ideas from control theory. This talk takes a fresh look at the problem from a physical point of view, which yields both a simple model of the physical process of balancing and a simple control system to accomplish it. For the special case of balancing in a plane, the robot’s behaviour is characterized by just two numbers, and the controller’s gains are trivial functions of these numbers. The talk will also explain how it is possible to use a single motion freedom to perform two tasks at once: balance the robot and simultaneously follow a commanded motion trajectory. Several examples of balancing behaviours will be shown and explained.
Abstract (PDF)
Link for more information
Location:
IWR, Room 432, Im Neuenheimer Feld 368, 69120 Heidelberg
Time:
16:15
ECTS-Points:
not yet determined
info  The study of Levantine Prehistory based on computerized 3D Analysis - Colloquium: Scientific Computing for the Humanities Dr. Leore Grosman October 16, 2015, 14:15 ECTS-Points: not yet determined
Abstract, registration & information:
The computerized revolution poses challenges and creates new opportunities in prehistorical research of the Southern Levant. The Computerized Archaeology Laboratory at the Hebrew University integrates techniques and ideas from computer science (e.g., computer graphics, machine learning) in the archaeological research methodologies. We operate optical scanners which provide three dimensional (3D) digital models that are analyzed with computer programs developed in our laboratory. We address research issues and needs which could not be addressed without the availability of digital 3D models. Beyond ‘capturing’ and visualizing data, I will focus on the process of analysis and provide novel ways of interpretation. Several examples will be presented as the clustering between prehistoric lithic assemblages while verifying or negating the traditional classification. This will provide new insights to the path of Homo Erectus out of Africa c.a. 1.4 million years ago and the Neanderthal occupation in the Southern Levant c.a. 100,000 years ago.
Link for more information
Location:
IWR, Room 432, Im Neuenheimer Feld 368, 69120 Heidelberg
Time:
14:15
ECTS-Points:
not yet determined
info  An Introduction to Scalar Field Topology Dr. Julien Tierny January 18, 2016, 16:15 ECTS-Points: not yet determined
Abstract, registration & information:
Scalar fields are a versatile and integral part of many applications: In computer graphics, they appear in the form of the classical heat kernel shape descriptors. In molecular chemistry simulations, scalar fields derived from electron density are used to model complex molecular interactions.

Scalar fields are very appealing for analysing and visualizing complex data sets because they permit a precise mathematical theory that is largely based on Morse theory.

In this talk, Julien Tierny of the French National Centre for Scientific Research will give an introduction to this topic and outline past and current research. The talk is specifically geared towards an audience of non-experts in topological methods.
Location:
IWR, Room 432, Im Neuenheimer Feld 368, 69120 Heidelberg
Time:
16:15
ECTS-Points:
not yet determined