Persevere does lazy loading so that only the necessary data is downloaded.

Persevere 会执行延迟加载以便只有需要的数据才会被下载。

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RUNSTATS collects the necessary data to calculate the savings through NULL values.

RUNSTATS收集必要的数据，以计算通过null值节省的空间。

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WebSphere Portal's analytics log provides all the necessary data for portal analytics.

WebSphere Portal 的分析日志提供了用于门户分析的所有必要数据。

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OpenSignalMaps also plans to compare carriers nationwide and is currently collecting the necessary data.

FORBES: Verizon Wins, T-Mobile Loses In San Francisco Data Speed Test

First, the necessary data analysis will be a daunting task, requiring new computational methods.

ECONOMIST: An un-killer app

But gathering and handling the necessary data can require expensive expertise or training.

ECONOMIST: Modelling behaviour