"Once you know a little bit of what happens at the ground-truth level, you can get a better idea of what to do for therapy," Dr. Tononi said.

“一旦你知道一点基本事实层面发生的情况，就可以得到更好的治疗思路，”托诺尼博士说。

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The effective unsupervised change-detection method is fundamental in many applications in that the suitable ground-truth information is not always available.

由于先验知识并不是很容易获得的，所以在许多实际应用中非监督图象变化检测方法是一种基本方法。

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The Ares I-X test rocket has more than 700 sensors that will allow NASA to ground-truth some of its calculations about the safety and performance of the rocket.

战神九号测试火箭装有700多个传感器，可以让美国宇航局真实地了解该火箭的性能和安全状况。

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The Mountain View, California has also driven more than 5 million unique miles as part of its five-year quest (called project Ground Truth) to build more accurate maps from its own raw data rather than licensing map content from others, said Brian McClendon, head of Google maps.

FORBES: Google Updates Maps, Takes Them Offline -- for Android

Far from being the Pentagon Papers redux, the larger truth is how closely the ground-eye view in these documents reinforces what U.S. officials were long saying: that the war wasn't going well, the Taliban were making gains, and a new and invigorated strategy was needed to combat them.

WSJ: The AfPak Papers

Beyond Ground Truth, Google also aims to improve its service by mapping the interiors of more buildings - the current emphasis is on transport hubs, shopping centres, museums and business that pay for an approved photographer to visit them.

BBC: Google Maps uses Ground Truth project to battle Apple