Summary
In a unifying approach, this note deals with three different methods to find the best embedding of n objects in an ℓ p -space, p ≥ 1, if only pairwise dissimilarities are given and fitting is measured by weighted least squares. The procedures are based on (1) a nested algorithm with an inner linear constrained problem, (2) a generalized eigenvector procedure resembling inverse iteration, and (3) majorization. All resulting algorithms are quite similar, though the optimization problem is approached from different viewpoints. This paper explains why, by interpreting (2) and (3) as a relaxed version of a first order subgradient method.
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References
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© 1994 Springer-Verlag Berlin · Heidelberg
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Mathar, R. (1994). Multidimensional Scaling with ℓ p -Distances, a Unifying Approach. In: Bock, HH., Lenski, W., Richter, M.M. (eds) Information Systems and Data Analysis. Studies in Classification, Data Analysis, and Knowledge Organization. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-46808-7_29
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DOI: https://doi.org/10.1007/978-3-642-46808-7_29
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