PROXSCAL: A Multidimensional Scaling Program for Individual Differences Scaling with Constraints

may serve two purposes. First, they can beused to handle missing data, where certain (dis)similarities are not known; in that case, thecorresponding weights are simply set equal to zero. A second application of the weights is toput a larger emphasis on certain (dis)similarities in the analysis than on others.Restrictions. The unknown matrices X

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