These breaks happen with alarming frequency, but the real problem is that conventional forecasting approaches do not recognise them even after they have happened.

这些突变的发生频率之高令人惊讶，但真正的问题在于，即使在发生这些情况之后，常规的预测方法也意识不到。

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When distribution statistics are generated for the column "TYPE," the optimizer knows the real frequency of each model.

而一旦生成了关于“TYPE”列的分布统计信息，优化器即可了解每种型号真正的出现频率。

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A real optical frequency comb spans the entire visible spectrum of light, and has very fine, evenly spaced teeth.

实际光学频率梳横跨整个可见光谱，各齿极细并均匀分布。

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For a more enjoyable calling experience it also uses age-specific frequency adjustment and real-time speech slowing to help make calls crystal clear.

CNN: The mobile device that thinks it's a Russian doll

Real-time location system and radio-frequency identification technologies let staff easily locate kits with expired medication or in need of replenishing.

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Linen Technology Tracking, a Miami-based company, recently patented a radio-frequency identification chip designed to keep real-time inventory of frequently misplaced or stolen goods.

CNN: Tracking devices keep tabs on hotel linens