Surrogate Modeling Toolbox
The surrogate modeling toolbox (SMT) is a Python package that contains a collection of surrogate modeling methods, sampling techniques, and benchmarking functions. This package provides a library of surrogate models that is simple to use and facilitates the implementation of additional methods.
SMT is different from existing surrogate modeling libraries because of its emphasis on derivatives, including training derivatives used for gradient-enhanced modeling, prediction derivatives, and derivatives with respect to the training data.
It also includes new surrogate models that are not available elsewhere: kriging by partial-least squares reduction and energy-minimizing spline interpolation. SMT is documented using custom tools for embedding automatically-tested code and dynamically-generated plots to produce high-quality user guides with minimal effort from contributors.
SMT is distributed under the New BSD license.
To cite SMT 2.0: P. Saves and R. Lafage and N. Bartoli and Y. Diouane and J. H. Bussemaker and T. Lefebvre and J. T. Hwang and J. Morlier and J. R. R. A. Martins. SMT 2.0: A Surrogate Modeling Toolbox with a focus on Hierarchical and Mixed Variables Gaussian Processes. Advances in Engineering Software, 2024.
@article{saves2024smt,
author = {P. Saves and R. Lafage and N. Bartoli and Y. Diouane and J. Bussemaker and T. Lefebvre and J. T. Hwang and J. Morlier and J. R. R. A. Martins},
title = {{SMT 2.0: A} Surrogate Modeling Toolbox with a focus on Hierarchical and Mixed Variables Gaussian Processes},
journal = {Advances in Engineering Sofware},
year = {2024},
volume = {188},
pages = {103571},
doi = {https://doi.org/10.1016/j.advengsoft.2023.103571}}
To cite SMT legacy: M. A. Bouhlel and J. T. Hwang and N. Bartoli and R. Lafage and J. Morlier and J. R. R. A. Martins. A Python surrogate modeling framework with derivatives. Advances in Engineering Software, 2019.
@article{SMT2019,
Author = {Mohamed Amine Bouhlel and John T. Hwang and Nathalie Bartoli and Rémi Lafage and Joseph Morlier and Joaquim R. R. A. Martins},
Journal = {Advances in Engineering Software},
Title = {A Python surrogate modeling framework with derivatives},
pages = {102662},
issn = {0965-9978},
doi = {https://doi.org/10.1016/j.advengsoft.2019.03.005},
Year = {2019}}
Required packages
SMT depends on the following modules: numpy, scipy, scikit-learn, pydoe and Cython.
Installation
If you want to install the latest release
pip install smt
or else if you want to install from the current master branch
pip install git+https://github.com/SMTOrg/smt.git@master
Usage
For examples demonstrating how to use SMT, you can take a look at the tutorial notebooks or go to the 'smt/examples' folder.
Documentation
Documentation of Surrogate Modeling Toolbox.
Contributing
To contribute to SMT refer to the contributing section of the documentation.
Associated Scientific production
Bouhlel, Mohamed A., and Joaquim RRA Martins. "Gradient-enhanced kriging for high-dimensional problems." Engineering with Computers 35.1 (2019): 157-173.
Bouhlel, Mohamed Amine, Sicheng He, and Joaquim RRA Martins. "Scalable gradient–enhanced artificial neural networks for airfoil shape design in the subsonic and transonic regimes." Structural and Multidisciplinary Optimization 61.4 (2020): 1363-1376.
Bouhlel, M. A., Bartoli, N., Otsmane, A., and Morlier, J., An Improved Approach for Estimating the Hyperparameters of the Kriging Model for High-Dimensional Problems through the Partial Least Squares Method,” Mathematical Problems in Engineering, vol. 2016, Article ID 6723410, 2016.
Berguin, Steven H. "Jacobian-Enhanced Neural Networks." arXiv preprint arXiv:2406.09132 (2024).
Valayer, H., Bartoli, N., Castaño-Aguirre, M., Lafage, R., Lefebvre, T., Lopez-Lopera, A. F., & Mouton, S. (2024). A Python Toolbox for Data-Driven Aerodynamic Modeling Using Sparse Gaussian Processes. Aerospace, 11(4), 260.
Saves, P., Hallé-Hannan, E., Bussemaker, J., Diouane, Y., & Bartoli, N. (2026). Modeling hierarchical spaces: a review and unified framework for surrogate-based architecture design. Structural and Multidisciplinary Optimization, 69(3), 65.
Robani, M. D., Palar, P. S., Zuhal, L. R., Saves, P., & Morlier, J. (2025). SMT-EX: An explainable surrogate modeling toolbox for mixed-variables design exploration. In AIAA SCITECH 2025 Forum (p. 0777).
Gonel, Nicolas, Paul Saves, and Joseph Morlier. "Frequency-aware Surrogate Modeling With SMT Kernels For Advanced Data Forecasting." ECCOMAS AeroBest (2025).
Hwang, J. T., & Martins, J. R. (2018). A fast-prediction surrogate model for large datasets. Aerospace Science and Technology, 75, 74-87.
Dimitri Bettebghor, Nathalie Bartoli, Stephane Grihon, Joseph Morlier, and Manuel Samuelides. Surrogate modeling approximation using a mixture of experts based on EM joint estimation. Structural and Multidisciplinary Optimization, 43(2) :243–259, 2011.
Castano-Aguirre, M., López-Lopera, F. A., Bartoli, N., Massa, F., & Lefebvre, T. Scalable Sparse Co-Kriging for Multi-Fidelity Data Fusion: An Application to Aerodynamics. Reliability Engineering & System Safety, 112485, 2026
Metadata
Release files for smt 2.15.1
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
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| smt-2.15.1.tar.gz | 35.9 MB | With provenance | Details for smt-2.15.1.tar.gz |
Built distributions (wheels)
Total release size: 322.2 MB
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Transparency logRelease files / smt-2.15.1-cp311-cp311-win32.whl
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Transparency logRelease files / smt-2.15.1-cp311-cp311-musllinux_1_2_x86_64.whl
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| Size | 12.6 MB |
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Transparency logRelease files / smt-2.15.1-cp311-cp311-manylinux_2_24_x86_64.manylinux_2_28_x86_64.whl
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| Size | 11.6 MB |
| Tags | CPython 3.11 Linux glibc 2.24+ x86-64 Linux glibc 2.28+ x86-64 |
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Transparency logRelease files / smt-2.15.1-cp311-cp311-macosx_11_0_arm64.whl
| Download URL | smt-2.15.1-cp311-cp311-macosx_11_0_arm64.whl |
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| Size | 11.0 MB |
| Tags | CPython 3.11 macOS 11.0+ ARM64 |
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Transparency logRelease files / smt-2.15.1-cp310-cp310-win_amd64.whl
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| Size | 11.0 MB |
| Tags | CPython 3.10 Windows x86-64 |
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Transparency logRelease files / smt-2.15.1-cp310-cp310-win32.whl
| Download URL | smt-2.15.1-cp310-cp310-win32.whl |
|---|---|
| Size | 11.0 MB |
| Tags | CPython 3.10 Windows x86-32 |
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Transparency logRelease files / smt-2.15.1-cp310-cp310-musllinux_1_2_x86_64.whl
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| Size | 12.6 MB |
| Tags | CPython 3.10 Linux musl 1.2+ x86-64 |
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Transparency logRelease files / smt-2.15.1-cp310-cp310-manylinux_2_24_x86_64.manylinux_2_28_x86_64.whl
| Download URL | smt-2.15.1-cp310-cp310-manylinux_2_24_x86_64.manylinux_2_28_x86_64.whl |
|---|---|
| Size | 11.6 MB |
| Tags | CPython 3.10 Linux glibc 2.24+ x86-64 Linux glibc 2.28+ x86-64 |
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SHA-256 checksum How to use checksums |
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Transparency logRelease files / smt-2.15.1-cp310-cp310-macosx_11_0_arm64.whl
| Download URL | smt-2.15.1-cp310-cp310-macosx_11_0_arm64.whl |
|---|---|
| Size | 11.0 MB |
| Tags | CPython 3.10 macOS 11.0+ ARM64 |
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Transparency logSecurity for smt 2.15.1
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