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Quantile is an algorithm to analyze the distribution of observations. Quantiles are the values that divide the distribution so that a given portion of observations is below the quantile.


Given a set X of n feature vectors x1= (x11,…,x1p), ..., xn= (xn1,…,xnp) of dimension p, the problem is to compute the sample means and variance-covariance matrix or correlation matrix:

Online Processing

Online processing computation mode assumes that data arrives in blocks i = 1, 2, 3, … nblocks.

Computation of correlation and variance-covariance matrices in the online processing mode follows the general computation schema for online processing described in Algorithms.

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