Please use this identifier to cite or link to this item:
https://ah.lib.nccu.edu.tw/handle/140.119/125635| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | 符聖珍 | zh_TW |
| dc.contributor.author | 黃振維 | zh_TW |
| dc.contributor.author | Huang, Chen-Wei | en_US |
| dc.creator | 黃振維 | zh_TW |
| dc.creator | Huang, Chen-Wei | en_US |
| dc.date | 2019 | en_US |
| dc.date.accessioned | 2019-09-05T08:13:07Z | - |
| dc.date.available | 2019-09-05T08:13:07Z | - |
| dc.date.issued | 2019-09-05T08:13:07Z | - |
| dc.identifier | G0105751003 | en_US |
| dc.identifier.uri | http://nccur.lib.nccu.edu.tw/handle/140.119/125635 | - |
| dc.description | 碩士 | zh_TW |
| dc.description | 國立政治大學 | zh_TW |
| dc.description | 應用數學系 | zh_TW |
| dc.description | 105751003 | zh_TW |
| dc.description.abstract | 本文是在敘述利用前饋人工神經網路的數值方法去近似微分方程的解，其中分別利用邊界條件或是初始條件去造出試驗函數去讓神經網路去近似，或是試驗函數不隱含初始條件或邊界條件，直接把初始條件與邊界條件當作神經網路的目標函數的優化條件，利用SGD和ADAM優化器去更新神經網路參數，再分別做比較。\n\n其中在常微分方程分別去試驗了邊界值問題、特徵值問題、初始值問題、生態系統、及三種經典的偏微分方程，依照不同的方法去滿足不同的條件，進一步的去降低數值解的誤差。 | zh_TW |
| dc.description.abstract | This paper descirbes how to use the feed forward artificial neural network method to find the approximate solution of differential equations. Two types of the trial funcitons are used, and the objective function is minimized by SGD and ADAM methods respectively.\n\nWe test the boundary value problem, eigenvalue problem, initial value problem, two types of the ecological systems, and three classical types of the partial differential equations. We illustrate some examples and give some comparison results in Chapter 4. | en_US |
| dc.description.tableofcontents | Contents\n致謝 i\n中文摘要 ii\nAbstract iii\nContents iv\nList of Tables vi\nList of Figures vii\n1 Introduction 1\n2 Feed Forward Artificial Neural Network 3\n2.1 Architecture 3\n2.2 Mathematical Model of Artificial Neural Network 4\n2.3 Activation Function 4\n2.4 Optimizers 5\n2.4.1 Stochastic Gradient Decent(SGD) 5\n2.4.2 Adaptive Moment Estimation(ADAM) 5\n3 Objective Functions and Algorithm 7\n3.1 Trial function method of type1 7\n3.2 Trial function method of type2 8\n3.3 Algorithm 8\n4 Using Neural Network Method to Solve Differential Equations\n4.1 Boundary Value Problem 9\n4.1.1 Construction of the trail function and objective function 10\n4.1.2 Select the number of hidden layers 13\n4.1.3 Select the optimizers of the neural network 14\n4.2 The Eigenvalue Problem 14\n4.3 Initial Value Problem 21\n4.3.1 Lane-Emden Equation 21\n4.4 Systems of Differential Equations 26\n4.4.1 Rabbit versus Sheep Problem 26\n4.4.2 Lokta-Volterra Model 29\n4.5 Partial Differential Equations 33\n4.5.1 Laplace’s Equation 33\n4.5.2 Heat Equation 36\n4.5.3 Wave Equation 39\n\nBibliography 43 | zh_TW |
| dc.format.extent | 1254396 bytes | - |
| dc.format.mimetype | application/pdf | - |
| dc.source.uri | http://thesis.lib.nccu.edu.tw/record/#G0105751003 | en_US |
| dc.subject | 微分方程 | zh_TW |
| dc.subject | 神經網路 | zh_TW |
| dc.title | 利用神經網路解微分方程 | zh_TW |
| dc.title | Neural Network Methods for Solving Differential Equation | en_US |
| dc.type | thesis | en_US |
| dc.relation.reference | Bibliography\n[1] Ravi P Agarwal and Donal O’Regan. An introduction to ordinary differential equations.\nSpringer Science & Business Media, 2008.\n[2] Jerrold Bebernes and David Eberly. Mathematical problems from combustion theory,volume 83. Springer Science & Business Media, 2013.\n[3] Richard L Burden and J Douglas Faires. Numerical analysis(7th). Brooks/Cole, 2001.\n[4] Matt Curnan, Siddharth Deshpande, Hari Thirumalai, Zhaofeng Chen, John Michael, et al.\nSolving odes with a neural network and autograd. https://kitchingroup.cheme.cmu.edu/\nblog/2017/11/28/Solving-ODEs-with-a-neural-network-and-autograd/.\n[5] Vivek Dua. An artificial neural network approximation based decomposition approach for parameter estimation of system of ordinary differential equations. Computers & chemical\n[6] Ji-Huan He. Variational iteration method for autonomous ordinary differential systems.\nApplied Mathematics and Computation, 114(2-3):115–123, 2000.\n[7] Hamid A Jalab, Rabha W Ibrahim, Shayma A Murad, Amera I Melhum, and Samir B Hadid. Numerical solution of lane-emden equation using neural network. In AIP Conference Proceedings, volume 1482, pages 414–418. AIP, 2012.\n[8] Diederik P Kingma and Jimmy Ba. Adam: A method for stochastic optimization. arXiv\npreprint arXiv:1412.6980, 2014.\n[9] Hans Petter Langtangen and Hans Petter Langtangen. A primer on scientific programming\nwith Python, volume 6. Springer, 2011.\n[10] Sashank J Reddi, Satyen Kale, and Sanjiv Kumar. On the convergence of adam and beyond.\narXiv preprint arXiv:1904.09237, 2019.\n[11] Shagi-Di Shih et al. The period of a lotka-volterra system1. Taiwanese Journal of Mathematics, 1(4):451–470, 1997.\n[12] Steven H Strogatz. Nonlinear Dynamics and Chaos with Student Solutions Manual: With Applications to Physics, Biology, Chemistry, and Engineering. CRC Press, 2018.\n[13] Luma NM Tawfiq and Othman M Salih. Design feed forward neural network to solve eigenvalue problems with dirishlit boundary conditions. Int. J. Modern Math. Sci, 11(2):58–68, 2014.\n[14] Neha Yadav, Anupam Yadav, Manoj Kumar, et al. An introduction to neural network methods for differential equations. Springer, 2015. | zh_TW |
| dc.identifier.doi | 10.6814/NCCU201900919 | en_US |
| item.grantfulltext | restricted | - |
| item.openairetype | thesis | - |
| item.fulltext | With Fulltext | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_46ec | - |
| item.cerifentitytype | Publications | - |
| Appears in Collections: | 學位論文 | |
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|---|---|---|---|
| 100301.pdf | 1.22 MB | Adobe PDF2 | View/Open |
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