# Colloquia

A regular colloquium (DK seminar) will be organized in every semester. This seminar will be attended by the participating members, the collegiates and possibly some outside guests. The organization will be in the hands of the PostDoc. In the first year, the supervisors will give longer introductory lectures about their subjects and will present the research themes. In the following years, the presentations will be given by the PhD students. This seminar will foster the collaboration among supervisors and may lead to joint publications.

## Summer Term 2018

No colloquium in summer term 2018.

## Winter Term 2017/18

When: Wednesday, 11:30 - 12:30

Where:* *ISOR Meeting Room 6.511 (6th floor), Faculty of Business, Economics and Statistics

18.10.2017

- Marko Djukanovic (TUW, Institute of Computer Graphics and Algorithms): Exact and heuristic algorithms for solving the Longest common palindromic subsequence problem

25.10.2017

- Matthias Horn (TUW, Institute of Computer Graphics and Algorithm): Job Sequencing with One Common and Multiple Secondary Resources: A Problem Motivated from Particle Therapy for Cancer Treatment

08.11.2017

- Gramoz Goranci (UW, Faculty of Computer Science): On Reachability Vertex Sparsifiers

15.11.2017

- Dennis Meier (UW, Faculty of Mathematics): ADMM for monotone operators

22.11.2017

- Vladimir Kolmogorov (IST Austria): Complexity classifications of Valued Constraint Satisfaction Problems (Abstract)

06.12.2017

- Birgit Rudloff (WU, Institute for Statistics and Mathematics): Dynamic programming for multivariate problems involving risk measures (Abstract)

13.12.2017

- Caroline Geiersbach (UW, Department of Statistics and OR): Projected Stochastic Gradient Descent in Hilbert Spaces

24.01.2018

- Georg Pflug (UW, Department of Statistics and OR)

31.01.2018

- Hermann Schichl (UW, Faculty of Mathematics)

UW = University of Vienna

TUW = TU Wien

WU = Vienna University of Economics and Business

IST = Institute of Science and Technology Austria

## Summer Term 2017

When: Wednesday, 13:30 - 15:00

Where: ISOR Meeting Room 6.511 (6th floor), Faculty of Business, Economics and Statistics

**22.03.2017 **

- Teresa Scarinci (UW, Department of Statistics and OR): On high order time-discretization schemes in optimal control problems with bang-bang solutions

**05.04.2017**

- Immanuel Bomze (UW, Department of Statistics and OR): The complexity of simple models - a study of worst and typical hard cases for the Standard Quadratic Problem (StQP)
- Georg Pflug

**03.05.2017**

- Arnold Neumaier (UW, Department of Mathematics): Constraint aggegation in global optimization
- Hermann Schichl (UW, Department of Mathematics): Recent developments in global optimization

**07.06.2017**

- Radu Ioan Bot (UW, Department of Mathematics): The proximal-gradient algorithm for fractional programming: convergence analysis and rates
- Guenther Raidl (TUW, Institute of Computer Graphics and Algorithms): Mixed Integer Programming Approaches for Resource-Constrained Project Scheduling

**14.06.2017**

- Radu Ioan Bot (UW, Department of Mathematics): The primal-dual Douglas-Rachford algorithm for nonsmooth convex optimization
- Monika Henzinger (UW, Department of Computer Science): An Introduction to the Analysis of Combinatorial Algorithms

## Winter Term 2016/17

When: Wednesday, 15:00 - 17:00

Where: Seminar Room 3.307 (3rd floor), Faculty of Business, Economics and Statistics

**16.11.2016**

- Stefan Neumann (UW, Department of Computer Science): What You Will Gain By Rounding: Theory and Algorithms for Rounding Rank

**23.11.2016**

- Gramoz Goranci (UW, Department of Computer Science): Oblivious Routing beyond L_p norms

**30.11.2016**

- Caroline Geiersbach (UW, Department of Statistics and OR): Stochastic Homogenization in Elliptic Partial Differential Equations: Error Estimates and Optimal Approaches

**07.12.2016**

- Axel Böhm (UW, Department of Mathematics): The Viability Kernel Algorithm

**14.12.2016**

- Dang Khoa Nguyen (UW, Department of Mathematics): Splitting algorithms for monotone inclusions

**18.01.2017**

- Markus Gabl (UW, Department of Statistics and OR): Quadratic and Robust Programming

**25.01.2017**

- Morteza Kimiaei (UW, Department of Mathematics): Some algorithms for solving box constrained optimization