Analysis of individual differences in multidimensional scaling via an n-way generalization of 'eckart-young' decomposition
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...Another is two-mode factor analysis [25] [26] [27] [28] , in which terms and documents would again be represented as points in a space, but similarity is given by the inner product between points....
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"Analysis of individual differences ..." refers background in this paper
...This argument has been developed in more detail by Horan [1969]. The model may not hold in every case, but if it does we gain a unique and hopefully psychologically meaningful orientation of axes, thus obviating the rotational problem and defining much stronger scales of measurement than is usual in multidimensional scaling....
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"Analysis of individual differences ..." refers methods in this paper
...To convert them into (ratio scale) distance estimates additive constants were est imated (separately for each subject) b y the "one dimensional subspace" method described in Torgerson [1958]. Scalar products matrices were computed from these est imated distances, normalized to unit sum of squares, and subjected to the analysis described above....
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...can be done by using one of the standard procedures described in Torgerson [1958]. We then use the equations also described in Torgerson [1958, pp....
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