[R] Jackknife for scacofIndDiff ? Parallel?

[Hugo Blasdel]

How can a smacofIndDiff result be evaluated by a jackknife?  If not now,
can it be expected?

The alternative seems to be a trip to Monte Carlo many gigaflops away,
hence a third question, is there experience and a model for parallel
running multiple smacofIndDiffs, using all available threads rather than
the one used without such.

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