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wmayner/pyemd ★ 493 63 APPLICATION

PyEMD is a pure Python library for computing the Earth Mover's Distance (also known as Wasserstein distance) between histograms. As of version 2.0, it serves as a thin wrapper around the POT (Python Optimal Transport) library, providing three main functions: `emd()` for computing the EMD value, `emd_with_flow()` for getting both the EMD value and the flow matrix, and `emd_samples()` for computing EMD directly from sample arrays. The library implements optimizations from the original C++ implementation, including pre-flow cancellation of mass within same bins for zero-cost transport. It follows modern Python packaging practices with pyproject.toml, uses setuptools_scm for version management, and maintains comprehensive test coverage.

RATING: 8.0/10 MAINT: active DRIFT: low
#earth-movers-distance #optimal-transport #histogram-comparison #python-library #numpy-based #metric-computation #emd #distance #metric #scientific-computing #image-processing #mathematics #python #cython
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