论文部分内容阅读
随着房地产市场的发展,房地产估价的研究逐渐深入。如何更好地、科学地、快速地对大量房地产价格进行评估已成为现实的问题。一般的平差模型对已有数据的利用率不高,当存在多类观测值时,不同观测值的随机模型的确定是否合理会严重影响结果的精度。基于房地产整体估价的思想,提出了方差分量估计建立价格体系的新方法。通过对两类观测值进行试验,一类通过比价系数求得价格差建立观测方程;一类由价格直接建立观测方程。结果分析表明,新方法能够实现不同观测值的权值自动调整,精度更高,可靠性更强。
With the development of the real estate market, the research of real estate appraisal has gradually deepened. How to evaluate a large number of real estate prices better, scientifically and rapidly has become a real problem. The general adjustment model has a low utilization rate of the existing data. When there are many types of observations, whether the stochastic models of different observations are reasonable or not will seriously affect the accuracy of the results. Based on the idea of real estate valuation as a whole, a new method of estimating the variance component is proposed. By experimenting on two kinds of observation values, one kind obtains the observation equation through the price coefficient to get the price difference; and one kind directly establishes the observation equation by the price. The results show that the new method can automatically adjust weights of different observations with higher accuracy and reliability.