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Calculates the Bhattacharyya distance between two distributions.

SELECT similarity(as2DVector(x1,y1), as2DVector(x2,y2)) FROM stream

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Calculates the Mahalanobis distance between the distribution and the value. The value can be a scalar value or a vector.

SELECT distance(as3DVector(x, y, z), [1.0;2.0;3.0]) FROM stream

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Calculates the Kullback-Leibler divergence of the two given probability distributions.

SELECT kl(as3DVector(x, y, z), as3DVector(a, b, c)) FROM stream

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Calculates the log Likelihood between the given points and the probability distribution.

SELECT loglikelihood([1.0;2.0;3.0], x) FROM stream