Census data from 2007 and 2008 show that young people under the age of 25 make up less than three percent of America's self-employed.
VOA: standard.2010.01.31
There's less and less data in The Wall Street Journal.
华尔街日报》的数据越来越少
There's a problem with that and the problem is that countries that are less successful don't keep data--that's a problem.
但这个研究方法也有问题,在那些不太成功的国家里,数据并不充分,这是个问题
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。
I did it myself using my data, but it would always look more or less like this-- slightly different positions if people use different estimates.
这幅图是我根据自己的数据画出来的,有效边界的图形大致就是如此-,随着人们采用不同的估计值,其位置会发生微小的变化。
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