Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun The creation of
subsamples
Etymologies
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Examples
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Response: The effect diminishes with the size of town, it is actually larger than corrections based on population rises, and it gives results that are regionally coherent and you have yet to show that any objective subsampling of the rural stations makes any difference. - gavin
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With the exception of rudimentary subsampling done by removing one proxy at a time, this has not been done with the UR.
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Do you try various models and see how each does with the subsampling method rejecting those that do poorly on verification?
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Do you try various models and see how each does with the subsampling method rejecting those that do poorly on verification?
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The trends in temperature are almost unaffected by this subsampling, indicating that urban development and other local or instrumental influences have contributed little overall to the observed warming trends.
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B&C solved this problem by randomly subsampling as opposed to systematic subsampling & iteratively resampling.
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I was merely trying to explain to TCO what the value of subsampling is in general.
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All artifacts are ironed out through the 100 iterations of the random subsampling.
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Actually as I think about it, subsampling from a set is just a probability and statistics problem.
Polar Urals Update and Jones et al 1998 « Climate Audit 2006
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Because they did not do a single subsampling iteration, they effectively used all the data in the calibration, and at the same time avoided the problems of overfitting to a subsampling artifact.
Comments
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