数量化理论(Ⅰ)与专家评分多元回归方法在荒漠地区生物量估测上的比较

林业科学 ›› 1997, Vol. 33 ›› Issue (6): 481-487.

• 论文及研究报告 • 下一篇

数量化理论(Ⅰ)与专家评分多元回归方法在荒漠地区生物量估测上的比较

于九如¹,韦少敏¹,朱灵益²

1. 天津大学管理工程系天津 300072
2. 中国林业科学研究院林业研究所北京 100091

收稿日期:1995-12-20 出版日期:1997-11-25 发布日期:1997-11-25

A COMPARlSON OF QUANTIFICATION THEORY (Ⅰ) AND MULTIVARIATE REGRESSION METHOD OF EXPERT REMARK IN THE BIOMASS ESTIMATION OF DESERT AREA

Jiuru Yu¹,Shaomin Wei¹,Lingyi Zhu²

1. Management College, Tianjin university Tainjin 300072
2. The Research Institute of Chinese Acadamy of Forestry Beijing 100091

Received:1995-12-20 Online:1997-11-25 Published:1997-11-25

摘要/Abstract

摘要：

本文对数量化理论(Ⅰ)中的量化过程进行了改进,采用专家评分,在如下模型中令δ_i(j, k)=β_i(j, k), 0 < β_i(j, k)≤1 β_i(j, k)是第j个项目的第k个类目的权重或贡献大小,由专家评分给出。通过实际验证,改进后的模型使预测精度有很大提高。

关键词: 项目, 数目, 数量化过程, 数量化理论(Ⅰ)模型, 专家评分

Abstract:

The quantitative process of the quantitative theory (Ⅰ) has been improved and the method of expert evaluation mark has been adopted in this paper. As we know, in the quantitative process: i=1, 2, …, n, j=1, 2, …, m, k=1, 2, …, r.where n is sample number, m refers to item numbest and r represents category number of item j.Now, for the improved quantitative process, assume where β_i(j, k) can be comprehended the weight or contribution of category k of item j and given by the expert evaluation mark.Through verification of actual model, the forecasting precision of improved quantitative theory (Ⅰ) model is obviously enhanced.

Key words: Item, Category, Quantitative process, Quantitative theory (Ⅰ) model, Expert evaluation mark

于九如,韦少敏,朱灵益. 数量化理论(Ⅰ)与专家评分多元回归方法在荒漠地区生物量估测上的比较[J]. 林业科学, 1997, 33(6): 481-487.

Jiuru Yu,Shaomin Wei,Lingyi Zhu. A COMPARlSON OF QUANTIFICATION THEORY (Ⅰ) AND MULTIVARIATE REGRESSION METHOD OF EXPERT REMARK IN THE BIOMASS ESTIMATION OF DESERT AREA[J]. Scientia Silvae Sinicae, 1997, 33(6): 481-487.

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数量化理论(Ⅰ)与专家评分多元回归方法在荒漠地区生物量估测上的比较

A COMPARlSON OF QUANTIFICATION THEORY (Ⅰ) AND MULTIVARIATE REGRESSION METHOD OF EXPERT REMARK IN THE BIOMASS ESTIMATION OF DESERT AREA

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