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What's the difference in using more nquantiles? #1583

Closed Answered by aulemahal
Joaogmr472 asked this question in Questions
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Hi @Joaogmr472,

It took some time before I had time to come back to this issue. I discussed it with others and did some quick tests and I have a few conclusions :

One issue with taking as many quantiles as values is indeed overfitting, but particularly on the extremes. An example I actually encountered with xclim is related to issue #1015. If we were to use the sorted timeseries as I suggested above, it would assign the quantiles 0 and 1 to the minimum and maximum of the series. In the adjust step, this has the effect of clipping the scenario to the range of the reference, at least within the reference period.

The default way xclim chooses its quantiles (after this issue was solved) is to…

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enhancement New feature or request sdba Issues concerning the sdba submodule. support Questions and help for users/developers
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Converted from issue

This discussion was converted from issue #1162 on January 10, 2024 18:19.