基于麻雀搜索优化SVR模型的房地产价格研究

doi:10.16180/j.cnki.issn1007-7820.2024.01.001

Abstract

Abstract:

In order to solve the data acquisition lag problem of traditional economic indicators as an influencing factor of housing prices, and the uncertainty of parameter selection in the machine learning model when predicting housing prices, the network search data is used as the explanatory variable of the house price index, and Sparrow Search Algorithm(SSA) is used to establish the SSA-SVR(Support Vector Regression)model to optimize the penalty factor C of SVR and the parameter g of the RBF(Radical Basic Function) kernel function in this study. Comparison among the established SSA-SVR model with PSO(Particle Swarm Optimization)-SVR, GA(Genetic Algorithm)-SVR,WOA(Whale Optimization Algorithm)-SVR, GS(Grid Search)-SVR and benchmark SVR show that the correlation coefficient of SSA-SVR(0.99), root mean square error(6.71), mean absolute error(5.24), mean square error(45.13) and mean absolute percentage error(0.26%) are better than those of the other five models. The results show that the SVR model optimized by the sparrow search algorithm has better global optimization ability in housing price prediction, which can improve the prediction accuracy and prediction ability of the model.

Key words: sparrow search algorithm, optimization algorithm, SVR model, data lag, parameter uncertainty, network search data, real estate price index, house price forecast

CLC Number:

TP39

LAN Ruijie,MENG Weigao,GENG Jinqiang. Research on Real Estate Price Index Based on Sparrow Search Optimization SVR Model[J].Electronic Science and Technology, 2024, 37(1): 1-8.

Figures/Tables 8

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Table 1.

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Table 3.

References 20

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因素类别	初始关键词
财政因素	房地产交易税房地产税房地产营业税房屋买卖税商品房税
财政因素	土地增值税物业税契税
金融因素	按揭按揭买房存款基准利率存款利率存款准备金率贷款利率贷款利率下调房贷房屋贷款购房贷款加息降息
金融因素	买房贷款期房贷款
政策因素	天津购房政策天津落户天津限购限购政策房地产调控国八条
政策因素	国六条国十条国十一条国四条国五条人才引进
可替代性因素	保障房保障性住房限价房公租房经济适用房廉租房天津二手房
供给市场因素	征地补偿容积率土地出让土地储备土地使用权房地产投资
供给市场因素	需求方因素:天津买房天津户口天津学区房中国指数研究院数据库天津房产网安居客链家房天下工资水平物价 CPI
需求市场因素	天津买房天津户口天津学区房中国指数研究院数据库天津房产网安居客链家房天下工资水平物价 CPI

样本	真实值	预测值	样本	真实值	预测值	样本	真实值	预测值
1	1 952	1 943	13	1 858	1 865	25	1 925	1 930
2	2 197	2 194	14	1 887	1 888	26	2 196	2 196
3	2 155	2 156	15	2 157	2 167	27	2 169	2 159
4	1 864	1 866	16	2 140	2 137	28	2 152	2 158
5	2 199	2 197	17	2 196	2 194	29	2 026	2 026
6	1 899	1 910	18	1 920	1 924	30	1 896	1 902
7	1 943	1 939	19	1 887	1 886	31	1 988	1 987
8	2 158	2 159	20	1 868	1 857	32	2 092	2 089
9	1 890	1 900	21	2 157	2 164	33	2 195	2 194
10	1 857	1 861	22	1 958	1 951	34	2 156	2 158
11	2 188	2 194	23	2 171	2 171	35	1 881	1 868
12	1 855	1 861	24	1 852	1 853	36	1 942	1 932

	SSA- SVR	PSO- SVR	GA- SVR	WOA- SVR	GS- SVR	SVR
MAE	5.24	13.11	7.81	6.21	36.12	31.42
MSE	45.13	199.06	205.63	62.41	1 783.37	1 246.87
MAPE	0.26%	0.65%	0.39%	0.33%	12.90%	11.42%
RMSE	6.71	16.25	14.34	7.92	42.23	35.31
r	0.99	0.99	0.99	0.99	0.85	0.93

Research on Real Estate Price Index Based on Sparrow Search Optimization SVR Model

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