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一、引 言 A.I.D.方法是数理统计中多元分析的一个分支,属于聚类分析的一种比较新的数学方法,它已经越来越多地应用于气象预报、生物分类、地质调查等各个领域. 在毛虾资源数量预报的研究中,最早(1958年)辽宁省海洋水产试验场用6—9月份平均降雨量预报过辽东湾毛虾相对资源量.近几年,河北省水产研究所用前一年11—12月及当年7月份的相对资源量,预报渤海湾翌年春汛和当年秋汛毛虾的相对资源量;营口
I. INTRODUCTION The AID method is a branch of multivariate analysis in mathematical statistics. It belongs to a relatively new mathematical method of cluster analysis. It has been used more and more in various fields such as weather forecasting, biological classification and geological survey. In the study of forecasting the amount of shrimp resources, the earliest (1958) marine aquatic trial site in Liaoning Province predicted the relative amount of shrimp resources in Liaodong Bay with the average rainfall in June-September. In recent years, Hebei Province Fisheries Research Institute used the previous year November-December and July of that year relative amount of resources to forecast the next spring flood in Bohai Bay and then the relative resources of shrimp in autumn flood season; Yingkou