[SciPy-User] Why is Ward limited to Euclidean/full data matrix?

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[SciPy-User] Why is Ward limited to Euclidean/full data matrix?

Juan Nunez-Iglesias
The Wikipedia page seems to suggest that Ward's method can be implemented just from the distance matrix. Why is it restricted to using the full dataset and only Euclidean distance?

<a href="https://en.wikipedia.org/wiki/Ward&#39;s_method#Lance.E2.80.93Williams_algorithms">https://en.wikipedia.org/wiki/Ward's_method#Lance.E2.80.93Williams_algorithms

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