如何在 MATLAB 中找到离散 SIR model 的数值解？
[英]How can I find numerical solutions of discrete SIR model in MATLAB?
问题描述
I was looking to simulate the discrete sir model in MATLAB and also to find stability and bifurcation graph.
我正在寻找模拟 MATLAB 中的离散先生 model 并找到稳定性和分岔图。 can anyone help me solve these problems?谁能帮我解决这些问题？
1 个解决方案
解决方案1
0 2020-12-30 02:37:04
A great source for Matlab scripts is the Mathworks file exchange. Matlab 脚本的一个重要来源是 Mathworks 文件交换。 A search for the SIR model found:搜索 SIR model 发现：
https://www.mathworks.com/matlabcentral/fileexchange/75100-sir-epidemic-spread-model?s_tid=srchtitle https://www.mathworks.com/matlabcentral/fileexchange/75100-sir-epidemic-spread-model?s_tid=srchtitle
This should have what you're looking for (unfortunately don't have Matlab on this computer to check).这应该有你要找的东西（不幸的是，这台电脑上没有 Matlab 可以检查）。
For the discrete sir equations a for loop as described in:对于离散 sir 方程，for 循环如下所述：
https://www.mathworks.com/matlabcentral/answers/325773-solving-difference-equation-with-its-initial-conditions https://www.mathworks.com/matlabcentral/answers/325773-solving-difference-equation-with-its-initial-conditions
should be able to solve your system for fixed parameters.应该能够解决您的系统的固定参数。 You're going have to do a bit of work to get the bifurcation diagram and stability.您将不得不做一些工作来获得分岔图和稳定性。 This answer:这个答案：
Generate bifurcation diagram for 2D system 生成二维系统的分岔图
should get you going.应该让你去。
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