摘要
特异值指特高品位和特低品位,其超过了期望的品位分布范围,由于特高品位对品位均值、方差等均造成较大影响,会引起品位高估,因此特异值处理通常指非错误来源的特高品位的处理。特高品位的判断非常重要,需要结合定量分析,并要将其与局部高品位矿化相区分。本文通过具体案例论述特高品位的处理原则和方法。
Outliers mean extremely high values and extremely low values which lies outside the range of values expected,because of the influence to the mean value,variance,over estimation,extremely values strategies usually means topcutting strategies.The judgement of the extremely high values is very important,the quantitative analysis is needed and it should be distinguished from local high grade mineralization.This paper discusses the principles and methods of topcutting strategies through two cases.
作者
刘宇英
李勇
LIU Yuying;LI Yong(China ENFI Engineering Co.,Ltd.,Beijing 100038,China)
出处
《中国矿业》
北大核心
2019年第A01期322-324,共3页
China Mining Magazine
关键词
特异值
特高品位
特低品位
品位估值
outliers
extremely high value
extremely low value
grade estimation
