应用MREP指标评价材积方程优劣  

Appling MREP to Evaluate the Volume Equation

作　　者：钟义山[1] 钟云志[1] 

机构地区：[1]西北农林科技大学,陕西杨凌712100

出　　处：《中南林业调查规划》2001年第1期10-13,共4页Central South Forest Inventory and Planning

摘　　要：由实践中常用的评价材积方程性能的平均相对误差出发 ,导出了平均相对预测误差指标MREP ,该指标能较好地描述未来应用中材积方程产生的相对预测误差情况 。In this paper,an index called mean relative error for prediction (MREP) is deduced from the index of mean relative error which is commonly used for evaluating goodness of volume equations. The index can better predict mean relative errors of volume equations in application and can be taked as an important index for eveluating goodness and applicability of volum equations.

关 键 词：评价 材积方程 平均相对预测误差 

分 类 号：S758[农业科学—森林经理学]