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false-correlation
相关语句
  相似匹配句对
     False Words
     绞刑架False
短句来源
     On False Information
     试论言语假信息
短句来源
     Hermeneutics and false-reading
     诠释与误读
短句来源
     False-negative is 0%;
     假阴性0%;
短句来源
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ince the periodic extension of mean generating function in regression analysis has the defect of unequal premise, and the predictors are not independent to the predictants. An improving scheme is suggested. Analysis and experiments of samples result in that the new scheme can effectively eliminate the false correlation appearance which exist in old scheme, so the selected periodic predictors are more objective. Basing this new mathematical model, fitting rate and forecast accuracy is basically identical....

ince the periodic extension of mean generating function in regression analysis has the defect of unequal premise, and the predictors are not independent to the predictants. An improving scheme is suggested. Analysis and experiments of samples result in that the new scheme can effectively eliminate the false correlation appearance which exist in old scheme, so the selected periodic predictors are more objective. Basing this new mathematical model, fitting rate and forecast accuracy is basically identical. It is a very useful method for longterm prediction and analysis. What is more, this model has some resolving power of hidden periodicity.

针对均值生成函数的周期性延拓在回归分析中存在的回归前提不同,预报因子是预报量的非独立表现等缺点,给出了改进方案。实例分析计算表明:新方案可以有效地消除原方案中存在的非独立虚假相关现象,从而使得筛选出周期性预报因子更加客观。基于本方案所建立的数学预报模型,具有历史拟合率与多步长预报精度基本一致的特点,是一种具有使用价值的长期预报手段,也有一定的隐含周期分辨能力。

In horizontal reservoir prediction using seismic attributes, engineers face two problems: how to choose suitable seismic attributes, and how to analyse the reliability of prediction result. A simple method for solving above problems is developed by analysing some factors causing false correlation probability. This method achieves seismic attribute optimization and sample learning in three aspects: choosing some independent seismic attributes by correlation analysis, seismic attribute optimization and detailed...

In horizontal reservoir prediction using seismic attributes, engineers face two problems: how to choose suitable seismic attributes, and how to analyse the reliability of prediction result. A simple method for solving above problems is developed by analysing some factors causing false correlation probability. This method achieves seismic attribute optimization and sample learning in three aspects: choosing some independent seismic attributes by correlation analysis, seismic attribute optimization and detailed output category which are based on samples, and typical sample optimization based on statistical analysis. The method is characterized by simple principle and easy realization. The application examples in TZ1 and TZ6borehole areas show that its prediction results are more reasonable than those ofother ordinary methods.

在利用地震属性进行储层横向预测的实际工作中,用户普遍面临两个问题,即如何选取合适的地震属性和如何分析预测结果的可信度。本文在对出现假相关概率的因素进行分析的基础上,提出了一种能解决上述问题的简便方法。该方法从三个方面作地震属性参数优选及样本学习工作:①基于相关分析选取彼此独立的地震属性,②基于样本优选地震属性与细化输出类别,③基于统计分析化造典型样本;具有原理简单、易于实现的特点。文章最后以TZ1和TZ6井区的应用实例,说明该方法与采用常规流程相比,其预测结果更趋合理。

For the purpose of obtaining a higher correlation coefficient in form,people always transform two variables into sum,difference,product and quotient,in resulting“false correlation”of two stochastic variable groups which possess common component.For this reason,the paper processes from fundamental mathematic principle and homologizes moment about the origin and moment about the mean in the statistical mathematics,the author suggests the correlation coefficient and correlation moment coefficient and derivates...

For the purpose of obtaining a higher correlation coefficient in form,people always transform two variables into sum,difference,product and quotient,in resulting“false correlation”of two stochastic variable groups which possess common component.For this reason,the paper processes from fundamental mathematic principle and homologizes moment about the origin and moment about the mean in the statistical mathematics,the author suggests the correlation coefficient and correlation moment coefficient and derivates formula for calculating correlation coefficient after transforming the stochastic variables of sum,difference,product and quotient,through further analyzes the correlation coefficient characteristics after transforming the variables,the author believes that the “false correlation” method does not always obtain higher correlation efficient,sometimes it will lead to just the opposite,so that,we must pay attention.

2 积〔z=xy〕  乘数与被乘数可以互换而不影响其积。因此,对于由两变量之积与其中一个变量,无论是乘数或被乘数所得到的相关系数表现形式是相同的。由“随机变量积、商的统计参数计算公式”一文中①可知,变量x、y乘积的均值、均方差计算式为:均值 z=x...

 
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