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m Unless the distance function (and thus the matrix D) is symmetric, the correct matrix formula should be with D^T not D. |
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In matrix notation:
:<math>\min_{X\in\Pi_n} \operatorname{trace}(
where <math>\Pi_n</math> is the set of <math>n \times n</math> permutation matrices, <math>W</math> is the weight matrix and <math>D</math> is the distance matrix.
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