Dissimilarity: Get additive constant

A command that calculates the "additive constant" from the selected Dissimilarity.

Distances dij will be obtained from dissimilarities δij according to:

 distanceij = dissimilarityij + additiveConstant

We use a procedure by Cailliez (1983) to solve the "additive constant problem", i.e. find the smallest additiveConstant such that all distanceij in the above equation have a Euclidean representation.

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© djmw, December 1, 1997