---
_id: '12815'
abstract:
- lang: eng
  text: Active learning of physical systems must commonly respect practical safety
    constraints, which restricts the exploration of the design space. Gaussian Processes
    (GPs) and their calibrated uncertainty estimations are widely used for this purpose.
    In many technical applications the design space is explored via continuous trajectories,
    along which the safety needs to be assessed. This is particularly challenging
    for strict safety requirements in GP methods, as it employs computationally expensive
    Monte-Carlo sampling of high quantiles. We address these challenges by providing
    provable safety bounds based on the adaptively sampled median of the supremum
    of the posterior GP. Our method significantly reduces the number of samples required
    for estimating high safety probabilities, resulting in faster evaluation without
    sacrificing accuracy and exploration speed. The effectiveness of our safe active
    learning approach is demonstrated through extensive simulations and validated
    using a real-world engine example.
author:
- first_name: Jörn
  full_name: Tebbe, Jörn
  id: '85958'
  last_name: Tebbe
- first_name: Christoph
  full_name: Zimmer, Christoph
  last_name: Zimmer
- first_name: Ansgar
  full_name: Steland, Ansgar
  last_name: Steland
- first_name: Markus
  full_name: Lange-Hegermann, Markus
  id: '71761'
  last_name: Lange-Hegermann
- first_name: Fabian
  full_name: Mies, Fabian
  last_name: Mies
citation:
  ama: Tebbe J, Zimmer C, Steland A, Lange-Hegermann M, Mies F. <i>Efficiently Computable
    Safety Bounds for Gaussian Processes in Active Learning</i>. MLResearchPress ;
    2024:1333-1341.
  apa: Tebbe, J., Zimmer, C., Steland, A., Lange-Hegermann, M., &#38; Mies, F. (2024).
    Efficiently Computable Safety Bounds for Gaussian Processes in Active Learning.
    In <i>International Conference on Artificial Intelligence and Statistics (AISTATS),
    Vol. 238</i> (pp. 1333–1341). MLResearchPress .
  bjps: <b>Tebbe J <i>et al.</i></b> (2024) <i>Efficiently Computable Safety Bounds
    for Gaussian Processes in Active Learning</i>. MLResearchPress .
  chicago: Tebbe, Jörn, Christoph Zimmer, Ansgar Steland, Markus Lange-Hegermann,
    and Fabian Mies. <i>Efficiently Computable Safety Bounds for Gaussian Processes
    in Active Learning</i>. <i>International Conference on Artificial Intelligence
    and Statistics (AISTATS), Vol. 238</i>. Proceedings of Machine Learning Research.
    MLResearchPress , 2024.
  chicago-de: Tebbe, Jörn, Christoph Zimmer, Ansgar Steland, Markus Lange-Hegermann
    und Fabian Mies. 2024. <i>Efficiently Computable Safety Bounds for Gaussian Processes
    in Active Learning</i>. <i>International Conference on Artificial Intelligence
    and Statistics (AISTATS), Vol. 238</i>. Proceedings of Machine Learning Research.
    MLResearchPress .
  din1505-2-1: '<span style="font-variant:small-caps;">Tebbe, Jörn</span> ; <span
    style="font-variant:small-caps;">Zimmer, Christoph</span> ; <span style="font-variant:small-caps;">Steland,
    Ansgar</span> ; <span style="font-variant:small-caps;">Lange-Hegermann, Markus</span>
    ; <span style="font-variant:small-caps;">Mies, Fabian</span>: <i>Efficiently Computable
    Safety Bounds for Gaussian Processes in Active Learning</i>, <i>Proceedings of
    Machine Learning Research</i> : MLResearchPress , 2024'
  havard: J. Tebbe, C. Zimmer, A. Steland, M. Lange-Hegermann, F. Mies, Efficiently
    Computable Safety Bounds for Gaussian Processes in Active Learning, MLResearchPress
    , 2024.
  ieee: J. Tebbe, C. Zimmer, A. Steland, M. Lange-Hegermann, and F. Mies, <i>Efficiently
    Computable Safety Bounds for Gaussian Processes in Active Learning</i>. MLResearchPress
    , 2024, pp. 1333–1341.
  mla: Tebbe, Jörn, et al. “Efficiently Computable Safety Bounds for Gaussian Processes
    in Active Learning.” <i>International Conference on Artificial Intelligence and
    Statistics (AISTATS), Vol. 238</i>, MLResearchPress , 2024, pp. 1333–41.
  short: J. Tebbe, C. Zimmer, A. Steland, M. Lange-Hegermann, F. Mies, Efficiently
    Computable Safety Bounds for Gaussian Processes in Active Learning, MLResearchPress
    , 2024.
  ufg: '<b>Tebbe, Jörn u. a.</b>: Efficiently Computable Safety Bounds for Gaussian
    Processes in Active Learning, o. O. 2024 (Proceedings of Machine Learning Research).'
  van: Tebbe J, Zimmer C, Steland A, Lange-Hegermann M, Mies F. Efficiently Computable
    Safety Bounds for Gaussian Processes in Active Learning. International Conference
    on Artificial Intelligence and Statistics (AISTATS), Vol. 238. MLResearchPress
    ; 2024. (Proceedings of Machine Learning Research).
conference:
  location: Valencia, SPAIN
  name: 27th International Conference on Artificial Intelligence and Statistics (AISTATS)
  start_date: 2024-05-02
date_created: 2025-04-17T07:58:19Z
date_updated: 2025-06-25T12:47:19Z
department:
- _id: DEP5000
- _id: DEP5023
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://proceedings.mlr.press/v238/tebbe24a.html
oa: '1'
page: 1333-1341
publication: International Conference on Artificial Intelligence and Statistics (AISTATS),
  Vol. 238
publication_identifier:
  issn:
  - 2640-3498
publication_status: published
publisher: 'MLResearchPress '
series_title: Proceedings of Machine Learning Research
status: public
title: Efficiently Computable Safety Bounds for Gaussian Processes in Active Learning
type: conference_editor_article
user_id: '83781'
year: '2024'
...
---
_id: '12828'
abstract:
- lang: eng
  text: Partial differential equations (PDEs) are important tools to model physical
    systems and including them into machine learning models is an important way of
    incorporating physical knowledge. Given any system of linear PDEs with constant
    coefficients, we propose a family of Gaussian process (GP) priors, which we call
    EPGP, such that all realizations are exact solutions of this system. We apply
    the Ehrenpreis-Palamodov fundamental principle, which works as a non-linear Fourier
    transform, to construct GP kernels mirroring standard spectral methods for GPs.
    Our approach can infer probable solutions of linear PDE systems from any data
    such as noisy measurements, or pointwise defined initial and boundary conditions.
    Constructing EPGP-priors is algorithmic, generally applicable, and comes with
    a sparse version (S-EPGP) that learns the relevant spectral frequencies and works
    better for big data sets. We demonstrate our approach on three families of systems
    of PDEs, the heat equation, wave equation, and Maxwell's equations, where we improve
    upon the state of the art in computation time and precision, in some experiments
    by several orders of magnitude.
author:
- first_name: 'Marc '
  full_name: 'Härkönen, Marc '
  last_name: Härkönen
- first_name: Markus
  full_name: Lange-Hegermann, Markus
  id: '71761'
  last_name: Lange-Hegermann
- first_name: Bogdan
  full_name: ' Raiţă, Bogdan'
  last_name: ' Raiţă'
citation:
  ama: Härkönen M, Lange-Hegermann M,  Raiţă B. <i>Gaussian Process Priors for Systems
    of Linear Partial Differential Equations with Constant Coefficients</i>. Vol 202.
    MLResearchPress ; 2023.
  apa: Härkönen, M., Lange-Hegermann, M., &#38;  Raiţă, B. (2023). Gaussian Process
    Priors for Systems of Linear Partial Differential Equations with Constant Coefficients.
    In <i>40th International Conference on Machine Learning</i> (Vol. 202). MLResearchPress
    .
  bjps: <b>Härkönen M, Lange-Hegermann M and  Raiţă B</b> (2023) <i>Gaussian Process
    Priors for Systems of Linear Partial Differential Equations with Constant Coefficients</i>.
    MLResearchPress .
  chicago: 'Härkönen, Marc , Markus Lange-Hegermann, and Bogdan  Raiţă. <i>Gaussian
    Process Priors for Systems of Linear Partial Differential Equations with Constant
    Coefficients</i>. <i>40th International Conference on Machine Learning</i>. Vol.
    202. Proceedings of Machine Learning Research : PMLR. MLResearchPress , 2023.'
  chicago-de: 'Härkönen, Marc , Markus Lange-Hegermann und Bogdan  Raiţă. 2023. <i>Gaussian
    Process Priors for Systems of Linear Partial Differential Equations with Constant
    Coefficients</i>. <i>40th International Conference on Machine Learning</i>. Bd.
    202. Proceedings of machine learning research : PMLR. MLResearchPress .'
  din1505-2-1: '<span style="font-variant:small-caps;">Härkönen, Marc </span> ; <span
    style="font-variant:small-caps;">Lange-Hegermann, Markus</span> ; <span style="font-variant:small-caps;">
    Raiţă, Bogdan</span>: <i>Gaussian Process Priors for Systems of Linear Partial
    Differential Equations with Constant Coefficients</i>, <i>Proceedings of machine
    learning research : PMLR</i>. Bd. 202 : MLResearchPress , 2023'
  havard: M. Härkönen, M. Lange-Hegermann, B.  Raiţă, Gaussian Process Priors for
    Systems of Linear Partial Differential Equations with Constant Coefficients, MLResearchPress
    , 2023.
  ieee: M. Härkönen, M. Lange-Hegermann, and B.  Raiţă, <i>Gaussian Process Priors
    for Systems of Linear Partial Differential Equations with Constant Coefficients</i>,
    vol. 202. MLResearchPress , 2023.
  mla: Härkönen, Marc, et al. “Gaussian Process Priors for Systems of Linear Partial
    Differential Equations with Constant Coefficients.” <i>40th International Conference
    on Machine Learning</i>, vol. 202, MLResearchPress , 2023.
  short: M. Härkönen, M. Lange-Hegermann, B.  Raiţă, Gaussian Process Priors for Systems
    of Linear Partial Differential Equations with Constant Coefficients, MLResearchPress
    , 2023.
  ufg: '<b>Härkönen, Marc/Lange-Hegermann, Markus/ Raiţă, Bogdan</b>: Gaussian Process
    Priors for Systems of Linear Partial Differential Equations with Constant Coefficients,
    Bd. 202, o. O. 2023 (Proceedings of machine learning research : PMLR).'
  van: 'Härkönen M, Lange-Hegermann M,  Raiţă B. Gaussian Process Priors for Systems
    of Linear Partial Differential Equations with Constant Coefficients. 40th International
    Conference on Machine Learning. MLResearchPress ; 2023. (Proceedings of machine
    learning research : PMLR; vol. 202).'
conference:
  end_date: 2023-07-29
  location: Honolulu, HI
  name: 40th International Conference on Machine Learning
  start_date: 2023-07-23
date_created: 2025-04-22T14:14:42Z
date_updated: 2025-06-26T07:56:15Z
department:
- _id: DEP5023
intvolume: '       202'
language:
- iso: eng
publication: 40th International Conference on Machine Learning
publication_identifier:
  issn:
  - 2640-3498
publication_status: published
publisher: 'MLResearchPress '
series_title: 'Proceedings of machine learning research : PMLR'
status: public
title: Gaussian Process Priors for Systems of Linear Partial Differential Equations
  with Constant Coefficients
type: conference_editor_article
user_id: '83781'
volume: 202
year: '2023'
...
---
_id: '12786'
abstract:
- lang: eng
  text: 'One goal in Bayesian machine learning is to encode prior knowledge into prior
    distributions, to model data efficiently. We consider prior knowledge from systems
    of linear partial differential equations together with their boundary conditions.
    We construct multi-output Gaussian process priors with realizations in the solution
    set of such systems, in particular only such solutions can be represented by Gaussian
    process regression. The construction is fully algorithmic via Grobner bases and
    it does not employ any approximation. It builds these priors combining two parametrizations
    via a pullback: the first parametrizes the solutions for the system of differential
    equations and the second parametrizes all functions adhering to the boundary conditions.'
author:
- first_name: Markus
  full_name: Lange-Hegermann, Markus
  id: '71761'
  last_name: Lange-Hegermann
citation:
  ama: Lange-Hegermann M. <i>Linearly Constrained Gaussian Processes with Boundary
    Conditions</i>. Vol 130. (Banerjee A, Fukumizu K, eds.). MLResearchPress ; 2021.
  apa: Lange-Hegermann, M. (2021). Linearly Constrained Gaussian Processes with Boundary
    Conditions. In A. Banerjee &#38; K. Fukumizu (Eds.), <i>24th International Conference
    on Artificial Intelligence and Statistics (AISTATS)</i> (Vol. 130). MLResearchPress
    .
  bjps: <b>Lange-Hegermann M</b> (2021) <i>Linearly Constrained Gaussian Processes
    with Boundary Conditions</i>, Banerjee A and Fukumizu K (eds). MLResearchPress
    .
  chicago: 'Lange-Hegermann, Markus. <i>Linearly Constrained Gaussian Processes with
    Boundary Conditions</i>. Edited by A. Banerjee and K. Fukumizu. <i>24th International
    Conference on Artificial Intelligence and Statistics (AISTATS)</i>. Vol. 130.
    Proceedings of Machine Learning Research : PMLR . MLResearchPress , 2021.'
  chicago-de: 'Lange-Hegermann, Markus. 2021. <i>Linearly Constrained Gaussian Processes
    with Boundary Conditions</i>. Hg. von A. Banerjee und K. Fukumizu. <i>24th International
    Conference on Artificial Intelligence and Statistics (AISTATS)</i>. Bd. 130. Proceedings
    of machine learning research : PMLR . MLResearchPress .'
  din1505-2-1: '<span style="font-variant:small-caps;">Lange-Hegermann, Markus</span>
    ; <span style="font-variant:small-caps;">Banerjee, A.</span> ; <span style="font-variant:small-caps;">Fukumizu,
    K.</span> (Hrsg.): <i>Linearly Constrained Gaussian Processes with Boundary Conditions</i>,
    <i>Proceedings of machine learning research : PMLR </i>. Bd. 130 : MLResearchPress
    , 2021'
  havard: M. Lange-Hegermann, Linearly Constrained Gaussian Processes with Boundary
    Conditions, MLResearchPress , 2021.
  ieee: M. Lange-Hegermann, <i>Linearly Constrained Gaussian Processes with Boundary
    Conditions</i>, vol. 130. MLResearchPress , 2021.
  mla: Lange-Hegermann, Markus. “Linearly Constrained Gaussian Processes with Boundary
    Conditions.” <i>24th International Conference on Artificial Intelligence and Statistics
    (AISTATS)</i>, edited by A. Banerjee and K. Fukumizu, vol. 130, MLResearchPress
    , 2021.
  short: M. Lange-Hegermann, Linearly Constrained Gaussian Processes with Boundary
    Conditions, MLResearchPress , 2021.
  ufg: '<b>Lange-Hegermann, Markus</b>: Linearly Constrained Gaussian Processes with
    Boundary Conditions, Bd. 130, hg. von Banerjee, A./Fukumizu, K., o. O. 2021 (Proceedings
    of machine learning research : PMLR ).'
  van: 'Lange-Hegermann M. Linearly Constrained Gaussian Processes with Boundary Conditions.
    Banerjee A, Fukumizu K, editors. 24th International Conference on Artificial Intelligence
    and Statistics (AISTATS). MLResearchPress ; 2021. (Proceedings of machine learning
    research : PMLR ; vol. 130).'
conference:
  end_date: 2021-04-15
  location: Virtual
  name: 24th International Conference on Artificial Intelligence and Statistics (AISTATS)
  start_date: 2021-04-13
date_created: 2025-04-14T13:58:16Z
date_updated: 2025-06-26T13:42:36Z
department:
- _id: DEP5000
- _id: DEP5023
editor:
- first_name: A.
  full_name: Banerjee, A.
  last_name: Banerjee
- first_name: K.
  full_name: Fukumizu, K.
  last_name: Fukumizu
intvolume: '       130'
keyword:
- FUNCTIONAL REGRESSION
- PREDICTION
- ALGORITHMS
- COMPLEXITY
- MODELS
language:
- iso: eng
publication: 24th International Conference on Artificial Intelligence and Statistics
  (AISTATS)
publication_identifier:
  issn:
  - 2640-3498
publication_status: published
publisher: 'MLResearchPress '
quality_controlled: '1'
series_title: 'Proceedings of machine learning research : PMLR '
status: public
title: Linearly Constrained Gaussian Processes with Boundary Conditions
type: conference_editor_article
user_id: '83781'
volume: 130
year: '2021'
...
