上述过程可以通过应用不同样本进行反复求解，以获得的最优方案间差异的统计估计值。
This process is repeated with different samples to obtain solutions along with statistical estimates of their optimality gaps.
一定要注意，确定性因子实际上是一个统计学概率的估计值，表示正确识别目录的概率。
It is important to note that the certainty factor is actually an estimate of the statistical likelihood that the category was identified correctly.
优化器根据可用的统计信息计算基数的估计值，即预计查询返回的行数。
The optimizer calculates its cardinality estimate — that is, the estimated number of rows returned by the query — based on the statistics available.
然后优化器会使用新创建的索引和在其上收集的统计信息来更正查询访问计划的基数估计值。
With the new index created, and statistics collected on it, the optimizer corrects the cardinality estimate of the query access plan.
在没有列组统计信息的情况下再次收集统计信息的话，优化器会选择一个类似如下所示的查询访问计划，它的基数估计值为2。
A query access plan similar to the following is chosen by the optimizer, with a cardinality estimate of 2.
在没有列组统计信息的情况下再次收集统计信息的话，优化器会选择一个类似如下所示的查询访问计划，它的基数估计值小于2。
A query access plan similar to the following is chosen by the optimizer, with a cardinality estimate under 2.
基于路面实测数据进行了统计分析，得到了路面使用性能参数的统计分布模型及其参数估计值。
Based on the measured data, the statistical distribution model and estimate value of statistical parameter were been obtained.
在统计学中这个估计值叫组间方差。
In statistical language, this estimate is called the between-column variance.
最后统计上述估计值并用求众数的方法确定最终的张数结果。
Finally, the result is determined by the mode of all estimates.
最后统计上述估计值并用求众数的方法确定最终的张数结果。
Finally, the result is determined by the mode of all estimates.
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