It turns out that to actually find text in these images, you can train a machine learning model where you give it some example data where people have drawn circles or boxes around the text.

事实证明，要想识别这些图像中的文字，你可以对一个机器学习模型进行“训练”，给它一些人们在文字周围画圈或画框的样本数据。

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The system then uses a variety of machine-learning techniques to train itself to be able to grade any number of essays or answers automatically and almost instantly.

然后，该系统利用多种机器学习技术进行自我培训，以便以一种近乎即时的方式对众多短文或答案进行自动评分。

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We're going to use this imaginary train to get as close as possible to the speed of light and see how it becomes a time machine.

虚构的火车以接近光速的速度行驶，它如何变成一个时间机器呢？

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He taught himself to be a pilot. During World War II, he designed a machine used to train military aircraft crews to fire guns at enemy aircraft.

VOA: special.2009.01.14

(Sound) As a large machine mashes the cotton into a solid brick a bit smaller than a train car, Pitt says her crop is destined for one of the world's most popular fashion items.

VOA: standard.2009.12.12

You know how when you use a big bill to buy a train ticket or stamps from a vending machine and unexpectedly get a handful of Susan B.

NEWYORKER: Dead in the Water

It began as a low rumble, I thought it was a train or large machine on the road at first, but when the whole house began to shake I realised it could only be an earthquake or perhaps a large plane crash.

BBC: Cumbria quake: Your comments

In the unstructured data world, especially text, the big trend is predictive coding or predictive analytics that identify high-risk communications, flag them for followup and use machine learning to train a data set.

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