What is ground truth?

Ground Truth

Ground truth is a term used in remote sensing; it refers to information collected on location. Ground truth allows image data to be related to real features and materials on the ground. The collection of ground-truth data enables calibration of remote-sensing data, and aids in the interpretation and analysis of what is being sensed. Examples include cartography, meteorology, analysis of aerial photographs, satellite imagery and other techniques in which data are gathered at a distance

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Some articles on ground truth:

The Ground Truth
... The Ground Truth (also known as The Ground Truth After the Killing Ends) is a 2006 documentary film about veterans of the Iraq War ...
Ground Truth - Statistics and Machine Learning
... In machine learning, the term "ground truth" refers to the accuracy of the training set's classification for supervised learning techniques ... The verb "ground truthing" refers to the process of gathering the proper objective data for this test ... This depends on the ground truth of the messages used to train the algorithm inaccuracies in that ground truth will correlate to inaccuracies in the ...
Psychological Bases of Controversy
... within isolated sub-groups, based on the mistaken belief of the community's unhindered access to ground truth ... Such confidence in the group to find the ground truth is explicable through the success of wisdom of the crowd based inferences, however, if there is no access to ...

Famous quotes containing the words truth and/or ground:

    Seeing then that truth consisteth in the right ordering of names in our affirmations, a man that seeketh precise truth, had need to remember what every name he uses stands for; and to place it accordingly; or else he will find himself entangled in words, as a bird in lime-twigs; the more he struggles, the more belimed.
    Thomas Hobbes (1579–1688)

    The mode of clearing and planting is to fell the trees, and burn once what will burn, then cut them up into suitable lengths, roll into heaps, and burn again; then, with a hoe, plant potatoes where you can come at the ground between the stumps and charred logs; for a first crop the ashes suffice for manure, and no hoeing being necessary the first year. In the fall, cut, roll, and burn again, and so on, till the land is cleared; and soon it is ready for grain, and to be laid down.
    Henry David Thoreau (1817–1862)