spectral_unmixing.mutual_information_1d

spectral_unmixing.mutual_information_1d(x, y, bins=64)

Estimate mutual information between two 1D intensity arrays using a 2D histogram.

Parameters:

• x, y (array-like) – One-dimensional or flattenable intensity arrays of equal length.

• bins (int, optional) – Number of histogram bins used for the joint density estimate. Must be at least 2.

Return type:

float

Returns:

float – Estimated mutual information in natural-log units.

Notes

This is a histogram-based estimator intended for relative comparisons during alpha optimization, not for bias-corrected information-theoretic inference.