---
_id: '21600'
abstract:
- lang: eng
  text: Many problems in science and engineering require an efficient numerical approximation
    of integrals or solutions to differential equations. For systems with rapidly
    changing dynamics, an equidistant discretization is often inadvisable as it results
    in prohibitively large errors or computational effort. To this end, adaptive schemes,
    such as solvers based on Runge–Kutta pairs, have been developed which adapt the
    step size based on local error estimations at each step. While the classical schemes
    apply very generally and are highly efficient on regular systems, they can behave
    suboptimally when an inefficient step rejection mechanism is triggered by structurally
    complex systems such as chaotic systems. To overcome these issues, we propose
    a method to tailor numerical schemes to the problem class at hand. This is achieved
    by combining simple, classical quadrature rules or ODE solvers with data-driven
    time-stepping controllers. Compared with learning solution operators to ODEs directly,
    it generalizes better to unseen initial data as our approach employs classical
    numerical schemes as base methods. At the same time it can make use of identified
    structures of a problem class and, therefore, outperforms state-of-the-art adaptive
    schemes. Several examples demonstrate superior efficiency. Source code is available
    at https://github.com/lueckem/quadrature-ML.
author:
- first_name: Michael
  full_name: Dellnitz, Michael
  last_name: Dellnitz
- first_name: Eyke
  full_name: Hüllermeier, Eyke
  id: '48129'
  last_name: Hüllermeier
- first_name: Marvin
  full_name: Lücke, Marvin
  last_name: Lücke
- first_name: Sina
  full_name: Ober-Blöbaum, Sina
  id: '16494'
  last_name: Ober-Blöbaum
- first_name: Christian
  full_name: Offen, Christian
  id: '85279'
  last_name: Offen
  orcid: 0000-0002-5940-8057
- first_name: Sebastian
  full_name: Peitz, Sebastian
  id: '47427'
  last_name: Peitz
  orcid: 0000-0002-3389-793X
- first_name: Karlson
  full_name: Pfannschmidt, Karlson
  id: '13472'
  last_name: Pfannschmidt
  orcid: 0000-0001-9407-7903
citation:
  ama: Dellnitz M, Hüllermeier E, Lücke M, et al. Efficient time stepping for numerical
    integration using reinforcement  learning. <i>SIAM Journal on Scientific Computing</i>.
    2023;45(2):A579-A595. doi:<a href="https://doi.org/10.1137/21M1412682">10.1137/21M1412682</a>
  apa: Dellnitz, M., Hüllermeier, E., Lücke, M., Ober-Blöbaum, S., Offen, C., Peitz,
    S., &#38; Pfannschmidt, K. (2023). Efficient time stepping for numerical integration
    using reinforcement  learning. <i>SIAM Journal on Scientific Computing</i>, <i>45</i>(2),
    A579–A595. <a href="https://doi.org/10.1137/21M1412682">https://doi.org/10.1137/21M1412682</a>
  bibtex: '@article{Dellnitz_Hüllermeier_Lücke_Ober-Blöbaum_Offen_Peitz_Pfannschmidt_2023,
    title={Efficient time stepping for numerical integration using reinforcement 
    learning}, volume={45}, DOI={<a href="https://doi.org/10.1137/21M1412682">10.1137/21M1412682</a>},
    number={2}, journal={SIAM Journal on Scientific Computing}, author={Dellnitz,
    Michael and Hüllermeier, Eyke and Lücke, Marvin and Ober-Blöbaum, Sina and Offen,
    Christian and Peitz, Sebastian and Pfannschmidt, Karlson}, year={2023}, pages={A579–A595}
    }'
  chicago: 'Dellnitz, Michael, Eyke Hüllermeier, Marvin Lücke, Sina Ober-Blöbaum,
    Christian Offen, Sebastian Peitz, and Karlson Pfannschmidt. “Efficient Time Stepping
    for Numerical Integration Using Reinforcement  Learning.” <i>SIAM Journal on Scientific
    Computing</i> 45, no. 2 (2023): A579–95. <a href="https://doi.org/10.1137/21M1412682">https://doi.org/10.1137/21M1412682</a>.'
  ieee: 'M. Dellnitz <i>et al.</i>, “Efficient time stepping for numerical integration
    using reinforcement  learning,” <i>SIAM Journal on Scientific Computing</i>, vol.
    45, no. 2, pp. A579–A595, 2023, doi: <a href="https://doi.org/10.1137/21M1412682">10.1137/21M1412682</a>.'
  mla: Dellnitz, Michael, et al. “Efficient Time Stepping for Numerical Integration
    Using Reinforcement  Learning.” <i>SIAM Journal on Scientific Computing</i>, vol.
    45, no. 2, 2023, pp. A579–95, doi:<a href="https://doi.org/10.1137/21M1412682">10.1137/21M1412682</a>.
  short: M. Dellnitz, E. Hüllermeier, M. Lücke, S. Ober-Blöbaum, C. Offen, S. Peitz,
    K. Pfannschmidt, SIAM Journal on Scientific Computing 45 (2023) A579–A595.
date_created: 2021-04-09T07:59:19Z
date_updated: 2023-08-25T09:24:50Z
ddc:
- '510'
department:
- _id: '101'
- _id: '636'
- _id: '355'
- _id: '655'
doi: 10.1137/21M1412682
external_id:
  arxiv:
  - arXiv:2104.03562
has_accepted_license: '1'
intvolume: '        45'
issue: '2'
language:
- iso: eng
main_file_link:
- url: https://epubs.siam.org/doi/reader/10.1137/21M1412682
page: A579-A595
publication: SIAM Journal on Scientific Computing
publication_status: published
related_material:
  link:
  - description: GitHub
    relation: software
    url: https://github.com/lueckem/quadrature-ML
status: public
title: Efficient time stepping for numerical integration using reinforcement  learning
type: journal_article
user_id: '47427'
volume: 45
year: '2023'
...
---
_id: '15111'
author:
- first_name: Karlson
  full_name: Pfannschmidt, Karlson
  id: '13472'
  last_name: Pfannschmidt
  orcid: 0000-0001-9407-7903
- first_name: Eyke
  full_name: Hüllermeier, Eyke
  id: '48129'
  last_name: Hüllermeier
- first_name: S.
  full_name: Held, S.
  last_name: Held
- first_name: R.
  full_name: Neiger, R.
  last_name: Neiger
citation:
  ama: 'Pfannschmidt K, Hüllermeier E, Held S, Neiger R. Evaluating tests in medical 
    diagnosis-Combining machine learning with game-theoretical concepts. In: <i>In
    Proceedings IPMU 16th International Conference on Information Processing and Management 
    of Uncertainty in Knowledge-Based Systems, Part 1, Eindhoven, The Netherlands</i>.
    Springer; 2016:450-461.'
  apa: Pfannschmidt, K., Hüllermeier, E., Held, S., &#38; Neiger, R. (2016). Evaluating
    tests in medical  diagnosis-Combining machine learning with game-theoretical concepts.
    In <i>In Proceedings IPMU 16th International Conference on Information Processing
    and Management  of Uncertainty in Knowledge-Based Systems, Part 1, Eindhoven,
    The Netherlands</i> (pp. 450–461). Springer.
  bibtex: '@inproceedings{Pfannschmidt_Hüllermeier_Held_Neiger_2016, title={Evaluating
    tests in medical  diagnosis-Combining machine learning with game-theoretical concepts},
    booktitle={In Proceedings IPMU 16th International Conference on Information Processing
    and Management  of Uncertainty in Knowledge-Based Systems, Part 1, Eindhoven,
    The Netherlands}, publisher={Springer}, author={Pfannschmidt, Karlson and Hüllermeier,
    Eyke and Held, S. and Neiger, R.}, year={2016}, pages={450–461} }'
  chicago: Pfannschmidt, Karlson, Eyke Hüllermeier, S. Held, and R. Neiger. “Evaluating
    Tests in Medical  Diagnosis-Combining Machine Learning with Game-Theoretical Concepts.”
    In <i>In Proceedings IPMU 16th International Conference on Information Processing
    and Management  of Uncertainty in Knowledge-Based Systems, Part 1, Eindhoven,
    The Netherlands</i>, 450–61. Springer, 2016.
  ieee: K. Pfannschmidt, E. Hüllermeier, S. Held, and R. Neiger, “Evaluating tests
    in medical  diagnosis-Combining machine learning with game-theoretical concepts,”
    in <i>In Proceedings IPMU 16th International Conference on Information Processing
    and Management  of Uncertainty in Knowledge-Based Systems, Part 1, Eindhoven,
    The Netherlands</i>, 2016, pp. 450–461.
  mla: Pfannschmidt, Karlson, et al. “Evaluating Tests in Medical  Diagnosis-Combining
    Machine Learning with Game-Theoretical Concepts.” <i>In Proceedings IPMU 16th
    International Conference on Information Processing and Management  of Uncertainty
    in Knowledge-Based Systems, Part 1, Eindhoven, The Netherlands</i>, Springer,
    2016, pp. 450–61.
  short: 'K. Pfannschmidt, E. Hüllermeier, S. Held, R. Neiger, in: In Proceedings
    IPMU 16th International Conference on Information Processing and Management  of
    Uncertainty in Knowledge-Based Systems, Part 1, Eindhoven, The Netherlands, Springer,
    2016, pp. 450–461.'
date_created: 2019-11-21T16:42:47Z
date_updated: 2022-01-06T06:52:15Z
department:
- _id: '34'
- _id: '7'
- _id: '355'
language:
- iso: eng
page: 450-461
publication: In Proceedings IPMU 16th International Conference on Information Processing
  and Management  of Uncertainty in Knowledge-Based Systems, Part 1, Eindhoven, The
  Netherlands
publisher: Springer
status: public
title: Evaluating tests in medical  diagnosis-Combining machine learning with game-theoretical
  concepts
type: conference
user_id: '49109'
year: '2016'
...
---
_id: '10226'
author:
- first_name: Karlson
  full_name: Pfannschmidt, Karlson
  id: '13472'
  last_name: Pfannschmidt
  orcid: 0000-0001-9407-7903
- first_name: Eyke
  full_name: Hüllermeier, Eyke
  id: '48129'
  last_name: Hüllermeier
- first_name: S.
  full_name: Held, S.
  last_name: Held
- first_name: R.
  full_name: Neiger, R.
  last_name: Neiger
citation:
  ama: 'Pfannschmidt K, Hüllermeier E, Held S, Neiger R. Evaluating tests in medical 
    diagnosis-Combining machine learning with game-theoretical concepts. In: <i>In
    Proceedings IPMU 16th International Conference on Information Processing and Management 
    of Uncertainty in Knowledge-Based Systems, Part 1, Eindhoven, The Netherlands</i>.
    Springer; 2016:450-461.'
  apa: Pfannschmidt, K., Hüllermeier, E., Held, S., &#38; Neiger, R. (2016). Evaluating
    tests in medical  diagnosis-Combining machine learning with game-theoretical concepts.
    In <i>In Proceedings IPMU 16th International Conference on Information Processing
    and Management  of Uncertainty in Knowledge-Based Systems, Part 1, Eindhoven,
    The Netherlands</i> (pp. 450–461). Springer.
  bibtex: '@inproceedings{Pfannschmidt_Hüllermeier_Held_Neiger_2016, title={Evaluating
    tests in medical  diagnosis-Combining machine learning with game-theoretical concepts},
    booktitle={In Proceedings IPMU 16th International Conference on Information Processing
    and Management  of Uncertainty in Knowledge-Based Systems, Part 1, Eindhoven,
    The Netherlands}, publisher={Springer}, author={Pfannschmidt, Karlson and Hüllermeier,
    Eyke and Held, S. and Neiger, R.}, year={2016}, pages={450–461} }'
  chicago: Pfannschmidt, Karlson, Eyke Hüllermeier, S. Held, and R. Neiger. “Evaluating
    Tests in Medical  Diagnosis-Combining Machine Learning with Game-Theoretical Concepts.”
    In <i>In Proceedings IPMU 16th International Conference on Information Processing
    and Management  of Uncertainty in Knowledge-Based Systems, Part 1, Eindhoven,
    The Netherlands</i>, 450–61. Springer, 2016.
  ieee: K. Pfannschmidt, E. Hüllermeier, S. Held, and R. Neiger, “Evaluating tests
    in medical  diagnosis-Combining machine learning with game-theoretical concepts,”
    in <i>In Proceedings IPMU 16th International Conference on Information Processing
    and Management  of Uncertainty in Knowledge-Based Systems, Part 1, Eindhoven,
    The Netherlands</i>, 2016, pp. 450–461.
  mla: Pfannschmidt, Karlson, et al. “Evaluating Tests in Medical  Diagnosis-Combining
    Machine Learning with Game-Theoretical Concepts.” <i>In Proceedings IPMU 16th
    International Conference on Information Processing and Management  of Uncertainty
    in Knowledge-Based Systems, Part 1, Eindhoven, The Netherlands</i>, Springer,
    2016, pp. 450–61.
  short: 'K. Pfannschmidt, E. Hüllermeier, S. Held, R. Neiger, in: In Proceedings
    IPMU 16th International Conference on Information Processing and Management  of
    Uncertainty in Knowledge-Based Systems, Part 1, Eindhoven, The Netherlands, Springer,
    2016, pp. 450–461.'
date_created: 2019-06-11T15:11:54Z
date_updated: 2022-01-06T06:50:32Z
department:
- _id: '34'
- _id: '7'
- _id: '355'
language:
- iso: eng
page: 450-461
publication: In Proceedings IPMU 16th International Conference on Information Processing
  and Management  of Uncertainty in Knowledge-Based Systems, Part 1, Eindhoven, The
  Netherlands
publisher: Springer
status: public
title: Evaluating tests in medical  diagnosis-Combining machine learning with game-theoretical
  concepts
type: conference
user_id: '49109'
year: '2016'
...
