Abstract
Implementing deep neural networks for learning the solution maps of parametric partial differential equations (PDEs) turns out to be more efficient than using many conventional numerical methods. However, limited theoretical analyses have been conducted on this approach. In this study, we investigate the expressive power of deep rectified quadratic unit (ReQU) neural networks for approximating the solution maps of parametric PDEs. The proposed approach is motivated by the recent important work of Kutyniok et al. (Constr Approx 1–53, 2021), which uses deep rectified linear unit (ReLU) neural networks for solving parametric PDEs. In contrast to the previously established complexity-bound \(\mathcal {O}\left( d^3\log _{2}^{q}(1/ \epsilon ) \right) \) for ReLU neural networks, we derive an upper bound \(\mathcal {O}\left( d^3\log _{2}^{q}\log _{2}(1/ \epsilon ) \right) \) on the size of the deep ReQU neural network required to achieve accuracy \(\epsilon >0\), where d is the dimension of reduced basis representing the solutions. Our method takes full advantage of the inherent low-dimensionality of the solution manifolds and better approximation performance of deep ReQU neural networks. Numerical experiments are performed to verify our theoretical result.
Similar content being viewed by others
Data Availability
The dataset is available at www.github.com/MoGeist/diffusion_PPDE.
References
Alnæs, M., Blechta, J., Hake, J., Johansson, A., Kehlet, B., Logg, A., Richardson, C., Ring, J., Rognes, M.E., Wells, G.N.: The fenics project version 1.5. Arch. Numer. Softw. 3(100), 9–23 (2015)
Bachmayr, M., Cohen, A.: Kolmogorov widths and low-rank approximations of parametric elliptic PDEs. Math. Comput. 86(304), 701–724 (2017)
Bhattacharya, K., Hosseini, B., Kovachki, N.B., Stuart, A.M.: Model reduction and neural networks for parametric PDEs. SMAI J. Comput. Math. 7, 121–157 (2021)
Chui, C.K., Mhaskar, H.N.: Deep nets for local manifold learning. Front. Appl. Math. Stat. 4, 12 (2018)
Dal Santo, N., Deparis, S., Pegolotti, L.: Data driven approximation of parametrized PDEs by reduced basis and neural networks. J. Comput. Phys. 416, 109550 (2020)
Duan, C., Jiao, Y., Lai, Y., Li, D., Yang, J.Z., et al.: Convergence rate analysis for deep ritz method. Commun. Comput. Phys. 31(4), 1020–1048 (2022)
Elbrachter, D., Grohs, P., Jentzen, A., Schwab, C.: Dnn expression rate analysis of high-dimensional pdes, Application to option pricing. Constr. Approx. 55(1), 3–71 (2018)
Evans, L.C.: Partial Differential Equations, volume 19 of Graduate Studies in Mathematics, 2nd edn. American Mathematical Society, Providence, RI (2010)
Geist, M., Petersen, P., Raslan, M., Schneider, R., Kutyniok, G.: Numerical solution of the parametric diffusion equation by deep neural networks. J. Sci. Comput. 88(1), 1–37 (2021)
Han, J., Jentzen, A., Weinan, E.: Solving high-dimensional partial differential equations using deep learning. Proc. Nat. Acad. Sci. 115(34), 8505–8510 (2018)
He, J., Li, L., Xu, J., Zheng, C.: Relu deep neural networks and linear finite elements. J. Comput. Math. 38(3), 502 (2020)
Hesthaven, J.S., Rozza, G., Stamm, B., et al.: Certified Reduced Basis Methods for Parametrized Partial Differential Equations, vol. 590. Springer, Berlin (2016)
Khoo, Y., Lu, J., Ying, L.: Solving parametric PDE problems with artificial neural networks. Eur. J. Appl. Math. 32(3), 421–435 (2021)
Kovachki, N., Lanthaler, S., Mishra, S.: On universal approximation and error bounds for fourier neural operators. J. Mach. Learn. Res., 22:Art–No, (2021)
Kutyniok, G., Petersen, P., Raslan, M., Schneider, R.: A theoretical analysis of deep neural networks and parametric pdes. Constr. Approx. 55(1), 73–125 (2021)
Lanthaler, S., Mishra, S., Karniadakis, G.: Error estimates for deeponets: a deep learning framework in infinite dimensions. IMA. 6, 1–141 (2022)
Li, B., Tang, S., Haijun, Y.: Better approximations of high dimensional smooth functions by deep neural networks with rectified power units. Commun. Comput. Phys. 27, 379–411 (2020)
Li, Z., Kovachki, N.B., Azizzadenesheli, K., Bhattacharya, K., Stuart, A., Anandkumar, A. et al.: Fourier neural operator for parametric partial differential equations. In: International Conference on Learning Representations (2020)
Lu L., Pengzhan J., George E.K.: Deeponet: Learning nonlinear operators for identifying differential equations based on the universal approximation theorem of operators. arXiv preprint arXiv:1910.03193, 2019
Mhaskar, H.N.: Neural networks for optimal approximation of smooth and analytic functions. Neural Comput. 8(1), 164–177 (1996)
Mhaskar, H.N.: Approximation properties of a multilayered feedforward artificial neural network. Adv. Comput. Math. 1(1), 61–80 (1993)
Opschoor, J.A.A., Schwab, C., Zech, J.: Exponential relu DNN expression of holomorphic maps in high dimension. Constr. Approx. 55(1), 537–582 (2021)
Paszke, A., Gross, S., Massa, F., Lerer, A., Bradbury, J., Chanan, G., Killeen, T., Lin, Z., Gimelshein, N., Antiga, L., et al.: Pytorch: an imperative style, high-performance deep learning library. Adv. Neural Inf. Process. Syst. 32, 8026–8037 (2019)
Quarteroni, A., Manzoni, A., Negri, F.: Reduced Basis Methods for Partial Differential Equations: An Introduction, vol. 92. Springer, Berlin (2015)
Salvador, M., Dede, L., Manzoni, A.: Non intrusive reduced order modeling of parametrized PDEs by kernel pod and neural networks. Comput. Math. Appl. 104, 1–13 (2021)
Schwab, Christoph, Zech, Jakob: Deep learning in high dimension: neural network expression rates for generalized polynomial chaos expansions in UQ. Anal. Appl. (Singap.) 17(01), 19–55 (2019)
Sirignano, J., Spiliopoulos, K.: Dgm: a deep learning algorithm for solving partial differential equations. J. Comput. Phys. 375, 1339–1364 (2018)
Tang, S., Li, B., Yu, H.: Chebnet: efficient and stable constructions of deep neural networks with rectified power units using chebyshev approximations. arXiv preprint arXiv:1911.05467, (2019)
Yarotsky, D.: Error bounds for approximations with deep ReLU networks. Neural Netw. 94, 103–114 (2017)
Acknowledgements
We would like to thank the two anonymous reviewers for their helpful and constructive comments on our work.
Funding
The authors were in part supported by NSFC (Grant No. 11725102), National Support Program for Young Top-Notch Talents, and Shanghai Science and Technology Program (Project No. 21JC1400600, No. 19JC1420101, and No. 20JC1412700).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Competing interests
The authors have not disclosed any competing interests.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Lei, Z., Shi, L. & Zeng, C. Solving Parametric Partial Differential Equations with Deep Rectified Quadratic Unit Neural Networks. J Sci Comput 93, 80 (2022). https://doi.org/10.1007/s10915-022-02015-2
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/s10915-022-02015-2