Academic Journal of Mathematical Sciences, 2022, 3(1); doi: 10.25236/AJMS.2022.030101.

## Research on the issue of maternity policy

Author(s)

Chen Yunuo1, Yu Zhouze1, Song Jingwei2

Corresponding Author:
Chen Yunuo
Affiliation(s)

1School of Mathematics and Statistics, Hubei Normal University, Huangshi 435002, Hubei, China

2School of Physics and Electronic Science, Hubei Normal University, Huangshi 435002, Hubei, China

### Abstract

We establish a mathematical model for calculating fertility costs and fertility willingness, and analyze the index system of factors affecting the fertility costs of ordinary Chinese families. Firstly, we obtain the initial weights through the AHP method, and then construct the envelopes of the weights and fitted the curves. In addition, the BP neural network is used to predict the population growth with or without the three-child policy, to obtain the population in the next three years, and study the difference between the two to obtain the ratio of the difference to the population growth without the three-child policy, thereby obtaining the three-child policy. Finally, the main factors affecting fertility willingness and fertility cost at home and abroad are studied.

### Keywords

AHP, BP neural network, envelope, multiple nonlinear regression

### Cite This Paper

Chen Yunuo, Yu Zhouze, Song Jingwei. Research on the issue of maternity policy. Academic Journal of Mathematical Sciences (2022) Vol. 3, Issue 1: 1-7. https://doi.org/10.25236/AJMS.2022.030101.

### References

[1] Deng Julong. Grey system theory course [M]. Huazhong University of Science and Technology Press, 1990.

[2] Wang Fang, Zhou Xing. Analysis of the current situation of the substitution relationship between the quality and quantity of Chinese children - based on the quantile regression method [J]. Northwest Population, 2012.

[3] Hou Jiawei, et al. Changes in China's population fertility willingness: 1980-2011 [J]. Chinese Social Sciences (4): 78-97.

[4] Yang Xin. Social policies to encourage fertility in countries or regions with low fertility levels and its enlightenment to my country [J]. Northwest Population, 2016, 37(1).

[5] Zhang Dongming. Social welfare system and policy in germany [J]. China Finance, 2013.

[6] Lu Yajun. The evolution of family policies in Western developed countries after the war [J]. Journal of Anqing Normal University (Social Science Edition), 2010. 29(1).