Description: logistic、malthus人模型都可以用于预测呈指数增长的数据模型，预测未来的人口的等数据，是由人口学家提出的，可用于预测未知的数目，以及检测一些模型所得结果的正确性。-logistic, malthus human model can be used to predict an exponential growth in data model, to predict the future, such as population data, is proposed by the demographer can be used to predict the number of unknown, as well as a number of model testing the correctness of the results. Platform: |
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Author:雷浩 |
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Description: 基于马尔萨斯及Logistic人口模型，本文做了相应改进，根据已有数据确立了我们的人口模型。人口净增长率与人口密度比是简单常数值或者是简单的指数函数，所建立的模型来预测人口总数都是不完备的，所以我们假定人口净增长率是随总人口变化的函数，而这个函数是我们通过数据拟合可以近似得到的，由人口净增长率函数的确立，我们可以以微分方程的形式建立人口模型-Based on the Malthusian and Logistic population model, this article has done a corresponding improvement in the data has been established according to our population model. Net population growth rate and population density of more than a simple constant value, or a simple exponential function, the model to predict the total population are incomplete, so we assume that the net population growth rate is changing with the function of the total population, and this function is fitted, we can approximate the data obtained by the population net growth rate of established function, we are able to establish a population in the form of differential equation model Platform: |
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Author:laiwei |
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