正确指数也称约登指数(Youden’s index)，是灵敏度和特异度之和减去1。
没有分区，将当前数据放到可以处理的正确位置需要许多开销，这种开销是随着机器的增加呈指数（不是线性）增长的。
Without partitioning, much overhead is incurred from getting the current data to the right place for processing, and this overhead grows exponentially -- not linearly -- as more machines are added.
宝格先生和麦基尔是正确的，他们宣称如果过多华而不实的因素被加在指数基金上的话，它低成本的吸引力将被减弱。
And Messrs Bogle and Malkiel are right to argue that the low-cost appeal of index funds will be diluted if too many bells and whistles are added.
这些比较乐观的指数将可能让欧洲央行坚定它的观点，它不需要这么快为支持经济采取行动，并且对通胀保持警觉是正确的。
These more upbeat indicators will probably harden the ECB's view that it does not need to act soon to prop up the economy and is right to be vigilant on inflation.
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