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Cross threshold when choosing components pca #9874

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Cross threshold when choosing components pca #9874

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8 changes: 7 additions & 1 deletion src/ert/analysis/misfit_preprocessor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,13 @@ def get_nr_primary_components(
# We compute the cumulative sum of these, then divide by their total sum to get the
# cumulative proportion of variance explained by each successive component.
variance_ratio = np.cumsum(singulars**2) / np.sum(singulars**2)
return len([1 for i in variance_ratio[:-1] if i < threshold])
rate_of_variance = np.diff(variance_ratio, append=1)
return int(
min(
np.argmax(rate_of_variance < 0.05) + 1,
np.argmax(variance_ratio >= threshold) + 1,
)
)


def cluster_responses(
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