With the continuous development of the Internet industry and the continuous promotion of informatization in recent years, the era of big data has come. “Data” has become the hottest term in this period. Various technologies based on Beijing Vastdata Technology Co.Ltd(603138) and Trust Alliance Information Development Inc.Ltd.Shanghai(300469) have profoundly changed our lives. Especially in China, the combination of Beijing Vastdata Technology Co.Ltd(603138) and artificial intelligence technology has produced a strong chemical reaction, which is rapidly promoting the transformation of all walks of life to informatization and intelligence.
1、 Challenges faced by traditional valuation business
In the context of big data, the traditional valuation business is facing the challenge of new technologies represented by artificial intelligence technology. In recent years, there are many papers and events in the field of data science and artificial intelligence. With an ambitious attitude, they try to replace the role of traditional valuation in the fields of real estate rent and price with pure intelligent algorithms.
Chen Xi and Zhang Xiaobo predicted 56279 residential rent data by training lightgbm model, and achieved ideal fitting results. On the basis of trying a variety of machine learning models, Xie Yong and others deeply excavated the impact of housing area, business district location and other factors on housing rent. In his master’s thesis, Xu Lingfeng tried to apply the deep neural network technology to the batch evaluation of housing price, showing the potential of this technology in such tasks. Li Zhenliang and Cao Buyang used support vector machine regression (SVR) model to predict the rent of office buildings on the basis of combining the surrounding factors of office buildings.
Although the above research still fails to meet the requirements of actual appraisal work in terms of appraisal accuracy and stability, the large number of such research fully shows the application potential of big data in the field of real estate appraisal. At the same time, more big data technologies are being developed and transplanted to the field of real estate appraisal, constantly challenging the accuracy of appraisal. The integration of traditional valuation business and big data has entered the present tense.
