Institute for
Numerical Simulation

Research Group
M. Griebel

Dr. Christian Feuersänger

Address:	Institut für Numerische Simulation Wegelerstr. 6 53115 Bonn Germany
E-Mail:	feuersaengerins.uni-bonn.de
URL:	http://wissrech.ins.uni-bonn.de/people/feuersaenger.html

Former member of the institute

Now at Recommind (http://www.recommind.de/)

Research Projects

	DFG priority program 1324: Extraktion quantifizierbarer Information aus komplexen Systemen Lower-Dimensional Principal Manifold Learning in Higher-Dimensional Data Spaces by Sparse Grid Methods
	Sparse grid methods for higher dimensional Fokker-Planck-Equations
	Material parameter compression for flow simulation Cooperation with Fraunhofer Institute for Algorithms and Scientific Computing SCAI
	Cluster of Excellence: Hausdorff Center for Mathematics Project Area J: High-dimensional problems and multi-scale methods

Teaching

• SS 2010:
  Numerische Mathematik, module V2E2
  Lecture with Prof. Dr. Michael Griebel.
• WS 2009/2010:
  Hauptseminar Wissenschaftliches Rechnen, module S2E2
  Seminar with Prof. Dr. Marc Alexander Schweitzer.
• SS 2009:
  Numerische Mathematik, module V2E2
  Lecture with Prof. Dr. Helmut Harbrecht.
• WS 2008/2009:
  Mathematische Modellierung und Numerische Approximation von hochdimensionalen Problemen, module S2E2
  Seminar with Prof. Dr. Michael Griebel and Dipl.-Math. Ralf Wildenhues.
• WS 2007/2008:
  Algorithmische Mathematik I, module V1G5
  Lecture with Prof. Dr. Helmut Harbrecht.
• SS 2007:
  Wissenschaftliches Rechnen II (Scientific Computing II), module 6565
  Lecture with Prof. Dr. Michael Griebel.
• WS 2006/2007:
  Wissenschaftliches Rechnen I (Scientific Computing I), module 6558
  Lecture with Prof. Dr. Michael Griebel.
• WS 2005/2006:
  Analysis und Numerik der Fokker-Planck-Gleichung (Analysis and Numerics of the Fokker-Planck Equation)
  Seminar with Prof. Dr. Michael Griebel.

Publications

[1]	C. Feuersänger. Sparse Grid Methods for Higher Dimensional Approximation. Dissertation, Institut für Numerische Simulation, Universität Bonn, Sept. 2010. [ bib | .pdf (link) | http ]
[2]	C. Feuersänger and M. Griebel. Principal manifold learning by sparse grids. Computing, 85(4), Aug. 2009. Also available as INS Preprint no 0801. [ bib | DOI | http | .pdf 1 | Abstract ]
[3]	C. Feuersänger. Dünngitterverfahren für hochdimensionale elliptische partielle Differentialgleichungen. Diplomarbeit, Institut für Numerische Simulation, Universität Bonn, 2005. (pdf enthält Korrekturen). [ bib | .pdf 1 ]

Talks

Conference contributions

[1]	Challenges of Sparse Grid Methods for Higher Dimensional Approximation, A4A6 - Algorithms for Approximation VI , Ambleside, Lake District, UK, August 31 - September 4, 2009.
[2]	An efficient sparse-grid method for the high-dimensional Fokker­Planck-Equation, ICIAM 07 - International Congress on Industrial and Applied Mathematics, Zürich, Switzerland, July 16-20, 2007.
[3]	An Efficient Sparse Grid Method for the high dimensional Fokker-Planck-Equation, HDA07 - Second Workshop on High-dimensional Approximation, Canberra, Australia, February 19-23, 2007.

Other Talks

[1]	Dünngitterverfahren für höherdimensionale Approximation, Promotionskolloquium, Bonn, September 7, 2010.

Responsibilities

• Head of Development team for Design and Implementation of a prototype for function approximation based on the sparse grid technology
• Internet Representation
  • Database design, management and development of front-end administrative interfaces
  • Design and Implementation of Web Services for content management, a central teaching repository (Shared Aufgabenpool), web based conference registration, timetable and -proceedings management
  • Coordination of web pages between research groups

Further (spare-time) Interests

	LaTeX package pgfplots: Development of LaTeX Plotting Package [example] Visit the Gallery
	LaTeX package pgfplotstable: Development of LaTeX Package: Loading, rounding and formatting tables in LaTeX [example] [example data] Component of pgfplots Visit the Gallery

Misc

[1]	C. Feuersänger. Wichtige LaTeX Befehle - (m)eine Kurzreferenz. [ pdf]