Hitchings D J, Campbell M J, Taylor D E
Int J Biomed Comput. 1975 Apr;6(2):73-88. doi: 10.1016/0020-7101(75)90030-6.
The early detection of deterioration in a patient depends on recognising trends: a capability poorly developed in monitor systems. Using exponentially mapped past (EMP) statistical variables, it has been proved that the difference between two EMP means is a function of only one variable, trend of input. Some of the signal variance appears on the difference signal, and so interpretation depends on a statistical approach based on knowledge of the normal variability of the monitored variable. The programs developed and built in a dedicated form utilise parallel hybrid computation of continuous data, but the principles are equally applicable to digital techniques with discrete data.
而这一能力在监测系统中发展欠佳。使用指数映射过去（EMP）统计变量已证明，两个EMP均值之间的差异仅是输入趋势这一个变量的函数。一些信号方差出现在差异信号上，因此解读依赖于基于监测变量正常变异性知识的统计方法。所开发并以专用形式构建的程序利用连续数据的并行混合计算，但这些原理同样适用于处理离散数据的数字技术。
