To improve the performance and lower the storage requirements of this routine, the estimation can be based on a subset of the data using extremely fast sampling on the page level.
为了改进性能并降低例程的存储要求,估算可使用页面级的极快速取样基于数据的一个子集。
2
What levelofestimation is required for each planning level?
对于每个规划阶段,需要进行何种程度的评估?
3
Table 2 show an estimationof relative priority for sample level 1 technical criteria.