Search Results for author: Bastian Alt

Found 9 papers, 2 papers with code

Approximate Control for Continuous-Time POMDPs

1 code implementation2 Feb 2024 Yannick Eich, Bastian Alt, Heinz Koeppl

This work proposes a decision-making framework for partially observable systems in continuous time with discrete state and action spaces.

Decision Making

Collaborative Optimization of the Age of Information under Partial Observability

no code implementations20 Dec 2023 Anam Tahir, Kai Cui, Bastian Alt, Amr Rizk, Heinz Koeppl

In this work, we devise a decentralized AoI-minimizing transmission policy for a number of sensor agents sharing capacity-limited, non-FIFO duplex channels that introduce random delays in communication with a common receiver.

Entropic Matching for Expectation Propagation of Markov Jump Processes

no code implementations27 Sep 2023 Bastian Alt, Heinz Koeppl

This paper addresses the problem of statistical inference for latent continuous-time stochastic processes, which is often intractable, particularly for discrete state space processes described by Markov jump processes.

Bayesian Inference

Bayesian Inference for Jump-Diffusion Approximations of Biochemical Reaction Networks

no code implementations13 Apr 2023 Derya Altıntan, Bastian Alt, Heinz Koeppl

The presented blocked Gibbs particle smoothing algorithm utilizes a sequential Monte Carlo method to estimate the latent states and performs distinct Gibbs steps for the parameters of a biochemical reaction network, by exploiting a jump-diffusion approximation model.

Bayesian Inference

Variational Inference for Continuous-Time Switching Dynamical Systems

no code implementations NeurIPS 2021 Lukas Köhs, Bastian Alt, Heinz Koeppl

Since many areas, such as biology or discrete-event systems, are naturally described in continuous time, we present a model based on an Markov jump process modulating a subordinated diffusion process.

Time Series Time Series Analysis +1

Load Balancing in Compute Clusters with Delayed Feedback

1 code implementation17 Sep 2021 Anam Tahir, Bastian Alt, Amr Rizk, Heinz Koeppl

In this paper, we provide a partially observable (PO) model that captures the load balancing decisions in parallel buffered systems under limited information of delayed acknowledgements.

Decision Making

POMDPs in Continuous Time and Discrete Spaces

no code implementations NeurIPS 2020 Bastian Alt, Matthias Schultheis, Heinz Koeppl

We consider the problem of optimal decision making in such discrete state and action space systems under partial observability.

Decision Making

Correlation Priors for Reinforcement Learning

no code implementations NeurIPS 2019 Bastian Alt, Adrian Šošić, Heinz Koeppl

Many decision-making problems naturally exhibit pronounced structures inherited from the characteristics of the underlying environment.

Imitation Learning reinforcement-learning +1

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