Michael Joyce created CLIMATE-481:
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Summary: StddevRatio and PatternCorr metrics outputting bad values
Key: CLIMATE-481
URL: https://issues.apache.org/jira/browse/CLIMATE-481
Project: Apache Open Climate Workbench
Issue Type: Bug
Components: metrics
Affects Versions: 0.3-incubating
Reporter: Michael Joyce
Assignee: Michael Joyce
Fix For: 0.4
Kyo reported the StdDevRatio and PatternCorr metrics were returning unexpected
results. He provided some example code (below) that demonstrated expected
values.
There seems to be a few problems with the current metrics. First, we don't have
a version of these that doesn't do some sort of rebin on the data first. That
should be changed (in fact, we should probably only have versions that don't
rebin the data, but that's a separate conversation perhaps). Second,
StdDevRatio currently normalizes to the target, instead of the reference
dataset. That's an easy fix. Third, Kyo is using a different stats method to
get what he wants. I will play around a bit and see if I can determine which we
should use and get it changed.
{code}
taylor_data[imodel, 0]=ma.std(model.values)/ma.std(ref_dataset.values)
taylor_data[imodel, 1]=stats.mstats.linregress(ref_dataset.values,
model.values)[2]
{code}
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