模型误差几种估计方法的比较及应用  

Comparisons and Application of Several Estimation Methods for Model Error

作　　者：钟义山[1] 燕爱玲[1] 钟云志[1] 

机构地区：[1]西北农林科技大学,陕西杨陵712100

出　　处：《西北林学院学报》2003年第4期145-147,共3页Journal of Northwest Forestry University

摘　　要：本文对林业实践中模型预测误差、预测相对误差的估计方法进行了讨论和比较,从非参数性方法导出了预测误差、预测相对误差的简捷估计方法,这些方法具有明确的统计意义,可用来检验模型的适用性,评价模型优劣。文中给出了估测森林蓄积量不同模型评价的实例。Comparisons and discussions on the estimation methods of model prediction error and relative error of prediction models in forest practice, derives estimation methods of prediction error and relative error by nonparamet-ric method have been done. These methods have clear statistical significance and can be used for the check of model suitability and evaluation of models. Examples of evaluation on models for predicting forest stocks are given.

关 键 词：预测模型 预测误差 相对误差 

分 类 号：S711[农业科学—林学]