Search Results for author: Manuel Dahmen

Found 14 papers, 1 papers with code

Multivariate Scenario Generation of Day-Ahead Electricity Prices using Normalizing Flows

no code implementations23 Nov 2023 Hannes Hilger, Dirk Witthaut, Manuel Dahmen, Leonardo Rydin Gorjao, Julius Trebbien, Eike Cramer

Additionally, our analysis highlights how our improvements towards adaptations in changing regimes allow the normalizing flow to adapt to changing market conditions and enable continued sampling of high-quality day-ahead price scenarios.

End-to-End Reinforcement Learning of Koopman Models for Economic Nonlinear Model Predictive Control

no code implementations3 Aug 2023 Daniel Mayfrank, Alexander Mitsos, Manuel Dahmen

(Economic) nonlinear model predictive control ((e)NMPC) requires dynamic models that are sufficiently accurate and computationally tractable.

Model Predictive Control reinforcement-learning

A Recursively Recurrent Neural Network (R2N2) Architecture for Learning Iterative Algorithms

no code implementations22 Nov 2022 Danimir T. Doncevic, Alexander Mitsos, Yue Guo, Qianxiao Li, Felix Dietrich, Manuel Dahmen, Ioannis G. Kevrekidis

Meta-learning of numerical algorithms for a given task consists of the data-driven identification and adaptation of an algorithmic structure and the associated hyperparameters.

Inductive Bias Meta-Learning

Physical Pooling Functions in Graph Neural Networks for Molecular Property Prediction

no code implementations27 Jul 2022 Artur M. Schweidtmann, Jan G. Rittig, Jana M. Weber, Martin Grohe, Manuel Dahmen, Kai Leonhard, Alexander Mitsos

We recommend using sum pooling for the prediction of properties that depend on molecular size and compare pooling functions for properties that are molecular size-independent.

Molecular Property Prediction Property Prediction

Graph neural networks for the prediction of molecular structure-property relationships

no code implementations25 Jul 2022 Jan G. Rittig, Qinghe Gao, Manuel Dahmen, Alexander Mitsos, Artur M. Schweidtmann

Molecular property prediction is of crucial importance in many disciplines such as drug discovery, molecular biology, or material and process design.

Drug Discovery Molecular Property Prediction +1

Graph Machine Learning for Design of High-Octane Fuels

no code implementations1 Jun 2022 Jan G. Rittig, Martin Ritzert, Artur M. Schweidtmann, Stefanie Winkler, Jana M. Weber, Philipp Morsch, K. Alexander Heufer, Martin Grohe, Alexander Mitsos, Manuel Dahmen

We propose a modular graph-ML CAMD framework that integrates generative graph-ML models with graph neural networks and optimization, enabling the design of molecules with desired ignition properties in a continuous molecular space.

Bayesian Optimization BIG-bench Machine Learning +1

Normalizing Flow-based Day-Ahead Wind Power Scenario Generation for Profitable and Reliable Delivery Commitments by Wind Farm Operators

no code implementations5 Apr 2022 Eike Cramer, Leonard Paeleke, Alexander Mitsos, Manuel Dahmen

We present a specialized scenario generation method that utilizes forecast information to generate scenarios for day-ahead scheduling problems.

Scheduling

Nonlinear Isometric Manifold Learning for Injective Normalizing Flows

no code implementations8 Mar 2022 Eike Cramer, Felix Rauh, Alexander Mitsos, Raúl Tempone, Manuel Dahmen

To model manifold data using normalizing flows, we employ isometric autoencoders to design embeddings with explicit inverses that do not distort the probability distribution.

Density Estimation Model Selection

Validation Methods for Energy Time Series Scenarios from Deep Generative Models

no code implementations27 Oct 2021 Eike Cramer, Leonardo Rydin Gorjão, Alexander Mitsos, Benjamin Schäfer, Dirk Witthaut, Manuel Dahmen

The design and operation of modern energy systems are heavily influenced by time-dependent and uncertain parameters, e. g., renewable electricity generation, load-demand, and electricity prices.

Time Series Time Series Analysis

Personalized Algorithm Generation: A Case Study in Learning ODE Integrators

2 code implementations4 May 2021 Yue Guo, Felix Dietrich, Tom Bertalan, Danimir T. Doncevic, Manuel Dahmen, Ioannis G. Kevrekidis, Qianxiao Li

As a case study, we develop a machine learning approach that automatically learns effective solvers for initial value problems in the form of ordinary differential equations (ODEs), based on the Runge-Kutta (RK) integrator architecture.

Meta-Learning

Principal Component Density Estimation for Scenario Generation Using Normalizing Flows

no code implementations21 Apr 2021 Eike Cramer, Alexander Mitsos, Raul Tempone, Manuel Dahmen

We train the resulting principal component flow (PCF) on data of PV and wind power generation as well as load demand in Germany in the years 2013 to 2015.

Density Estimation Image Generation +2

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