There appears to be little evidence of PPP in the real world data, generally… why not?

有似乎是在现实世界中的数据，一般很少有证据的PPP…为什么不呢？

youdao

We can start with estimates of expected impact, but as we work through our iterations, we can update and refine our calculations with real world data on the impact patterns are having in our context.

我们可以首先对期望的影响做出估计，但是随着我们不断迭代，在我们的情境中对于影响的模式就会产生数据，我们可以使用这些真实的数据来更新和改进我们的计算。

youdao

I would argue that such a pattern actually achieves better orthogonality in database design than does the more common strategy of identifying suitable "real world" data.

我不认为这样的模式在数据库设计中能够实际达到比标识适合“现实世界”数据的更常用策略更好的正交性。

youdao

We transition to actually real world applications later on like a compression-- how do you take a huge amount of data ; and actually whittle it down into something more manageable; something that uses less of your disk space.

然后我们会讲生活中的应用程序,比方说压缩文件——,把大量的数据分解使其更易管理;,并占用尽量少的磁盘空间。

哈佛公开课 - 计算机科学课程节选

But real-world offline merchants have none of these data.

但现实世界里那些不上网的商人,没有这些数据。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

We have a nice theoretical framework, but the application of the framework to the real data is hard and it ends up with politics underneath it all; that's just the real world.

我们有清晰的理论框架,但实际运用理论知识却困难重重,最终还是政治支配一切,这就是现实社会

耶鲁公开课 - 金融市场课程节选

In summary, science progresses by testing predictions against real world data obtained from direct observations and rigorous experiments.

WSJ: Concerned Scientists Reply on Global Warming

These estimates are made by economists and data analysts at Zillow using an algorithm with real-world data from contractors, such as finish levels and material rates.

WSJ: Home-Design Help��At What Cost?

Putting sensitive real-world data into the virtual world presents a few privacy problems, Paradiso admits.

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