Group Workshops

For one week in summer and sometimes also for another week in winter we escape to remote locations in the mountains and do nothing but work, eat well, and enjoy nature. In the summer we regularly go to Buchboden. Sometimes we are also joined by other groups from the Institute of Theoretical Computer Science or external guests. You can find a list of guests and results below.

External Guests


Here is a (partial) list of results obtained in our research retreats. The year given is the year in which the corresponding workshop was held.


Random initialisations performing above chance and how to find them
F. Benzing, S. Schug, R. Meier, J. v. Oswald, Y. Akram, N. Zucchet, L. Aitchison, A. Steger
Arxiv preprint.


Open-Ended Reinforcement Learning with Neural Reward Functions (arxiv version)
R. Meier, A. Mujika


An optimal decentralized (Δ+1)-coloring algorithm
D. Bertschinger, J. Lengler, A. Martinsson, R. Meier A. Steger, M. Trujić, E. Welzl


Improving Gradient Estimation in Evolutionary Strategies With Past Descent Directions
F. Meier*, A. Mujika*, M. Gauy and A. Steger

Long cycles, heavy cycles and cycle decompositions in digraphs
C. Knierim, M. Larcher, A. Martinsson and A. Noever


Optimal Kronecker-Sum Approximation of Real Time Recurrent Learning
F. Benzing, M. Gauy, A. Mujika, A. Martinsson and A. Steger

Optimal strategies for patrolling fences
Bernhard Haeupler, Fabian Kuhn, Anders Martinsson, Kalina Petrova, Pascal Pfister

The edge-statistics conjecture for ℓ ≪ k6/5
A. Martinsson, F. Mousset, A. Noever, and M. Trujić
Israel Journal of Mathematics, 2019

Even flying cops should think ahead
A. Martinsson, F. Meier, P. Schnider, A.Steger

Kr-Factors in Graphs with Low Independence Number
C. Knierim, P. Su


Labeling Schemes for Nearest Common Ancestors through Minor-Universal Trees
P. Gawrychowski, F. Kuhn, J. Łopuszański, K. Panagiotou, and P. Su
A hippocampal model for behavioral time acquisition and fast bidirectional replay of spatio-temporal memory sequences
M. Gauy, H. Einarsson, J. Lengler, F. Meier, F. Weissenberger, M. F. Yanik and A. Steger
Frontiers in Neuroscience, Systems Biology, 2018
The linear hidden subset problem for the (1+1)EA with scheduled and adaptive mutation rates
F. Meier, H. Einarsson, M. Gauy, J. Lengler, A. Mujika, A. Steger and F. Weissenberger


Triangle resilience of the square of a Hamilton cycle in random graphs
M. Fischer, N. Škorić, A. Steger, and Miloš Trujić
JCTB, 2022

Asymptotically Optimal Amplifiers for the Moran Process
Leslie Ann Goldberg, John Lapinskas, Johannes Lengler, Florian Meier and Konstantinos Panagiotou
Voltage dependence of synaptic plasticity is essential for rate based learning with short stimuli
F. Weissenberger, M. Gauy, J. Lengler, F. Meier and A. Steger
Scientific Reports, 2018


A tight Erdős-Pósa function for long cycles
A. Noever, F. Mousset, N. Škorić, and F. Weissenberger
Long synfire chains emerge by spike-timing dependent plasticity modulated by population activity
F. Weissenberger, F. Meier, J. Lengler, H. Einarsson and A. Steger
International Journal of Neural Systems, 2017
A model of fast Hebbian spike latency normalization
H. Einarsson, M. Gauy, J. Lengler and A. Steger
Frontiers in Computational Neuroscience, 2017


Limits of Random Graphs from Subcritical Classes
K. Panagiotou, B. Stufler, and K. Weller
Almost-spanning universality in random graphs
D. Conlon, A. Ferber, R. Nenadov, and N. Škorić


Robust hamiltonicity of random directed graphs
A. Ferber, R. Nenadov, A. Noever, U. Peter, and N. Škorić
In Proceedings of the 10th Annual ACM-SIAM Symposium on Discrete Algorithms (SODA '15), 2015, 1752-1758
Connectivity thresholds for bounded size rules
H. Einarsson, J. Lengler, F. Mousset, K. Panagiotou, and A. Steger
Annals of Applied Probability, 2016
Bootstrap percolation with inhibition
H. Einarsson, J. Lengler, F. Mousset, K. Panagiotou, and A. Steger
Random Structures and Algorithms, 2019


Internal DLA: Efficient Simulation of a Physical Growth Model
K. Bringmann, F. Kuhn, K. Panagiotou, U. Peter, and H. Thomas
In Proceedings of the 41th International Colloquium on Automata, Languages, and Programming (ICALP '14), 2014, 247-258
A high-capacity model for one shot association learning in the brain
H. Einarsson, J. Lengler, and A. Steger
Frontiers in Computational Neuroscience


Random Hyperbolic Graphs: Degree Sequence and Clustering
L. Gugelmann, K. Panagiotou, and U. Peter
In Proceedings of the 39th Int. Colloquium on Automata, Languages and Programming (ICALP '12), 2012, 573-585


Explosive percolation in Erdős-Rényi-like random graph processes
K. Panagiotou, R. Spöhel, A. Steger, and H. Thomas
Combinatorics, Probability and Computing 22(1), 2013, 133-145


A polynomial lower bound for distributed graph coloring in a weak LOCAL model
D. Hefetz, F. Kuhn, Y. Maus, A. Steger
In: Proceedings of the 30th International Symposium on Distributed Computing (DISC), 2016, 99-113; best paper award


Von Neumann and Newman poker with a flip of hand values
N. Bernasconi, J. Lorenz, and R. Spöhel
Discrete Mathematics 311(21), 2011, 2337-2345
Synchrony and Asynchrony in Neural Networks
F. Kuhn, J. Spencer, K. Panagiotou, and A. Steger
In Proceedings of the 10th Annual ACM-SIAM Symposium on Discrete Algorithms (SODA '10), 2010, 949-964


Observational learning in random networks
J. Lorenz, M. Marciniszyn, and A. Steger
In Proceedings of the 20th Annual Conference on Learning Theory (COLT '07), 2007, 574-588
Maximizing the Minimum Load for Random Processing Times
S. Gerke, K. Panagiotou, J. Schwartz, and A. Steger
ACM Transactions on Algorithms 11(3), 2015, Article No. 17
On Euclidean Vehicle Routing with Allocation
J. Remy, R. Spöhel, and A. Weißl
Computational Geometry 43(4), 2010, 357-376