Search Results for author: Erik Nygren

Found 4 papers, 1 papers with code

Scope Restriction for Scalable Real-Time Railway Rescheduling: An Exploratory Study

1 code implementation5 May 2023 Erik Nygren, Christian Eichenberger, Emma Frejinger

Instead, we propose defining a core problem that restricts a rescheduling problem in response to a disturbance to only trains that need to be rescheduled, hence restricting the scope in both time and space.

Flatland-RL : Multi-Agent Reinforcement Learning on Trains

no code implementations10 Dec 2020 Sharada Mohanty, Erik Nygren, Florian Laurent, Manuel Schneider, Christian Scheller, Nilabha Bhattacharya, Jeremy Watson, Adrian Egli, Christian Eichenberger, Christian Baumberger, Gereon Vienken, Irene Sturm, Guillaume Sartoretti, Giacomo Spigler

In order to probe the potential of Machine Learning (ML) research on Flatland, we (1) ran a first series of RL and IL experiments and (2) design and executed a public Benchmark at NeurIPS 2020 to engage a large community of researchers to work on this problem.

Imitation Learning Multi-agent Reinforcement Learning +3

Improving Sample Efficiency and Multi-Agent Communication in RL-based Train Rescheduling

no code implementations28 Apr 2020 Dano Roost, Ralph Meier, Stephan Huschauer, Erik Nygren, Adrian Egli, Andreas Weiler, Thilo Stadelmann

We present preliminary results from our sixth placed entry to the Flatland international competition for train rescheduling, including two improvements for optimized reinforcement learning (RL) training efficiency, and two hypotheses with respect to the prospect of deep RL for complex real-world control tasks: first, that current state of the art policy gradient methods seem inappropriate in the domain of high-consequence environments; second, that learning explicit communication actions (an emerging machine-to-machine language, so to speak) might offer a remedy.

Policy Gradient Methods reinforcement-learning +1

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