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Topic: Help, Mahalanbois distance
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Joseph Kuan

Posts: 16
Registered: 12/12/04
Help, Mahalanbois distance
Posted: Dec 9, 1996 1:06 PM
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I read a few multivariate statistics books for Mahalanbois distance,
the formula for two distributions is

(v - u) (covariance matrix)^-1 (v - u)

where v and u are the mean of two distributions respectively

Someone told me that the Mahalanbois distance is the weighted Euclidean distance with
variance. Is this the closest explaination and what is the inverse covariance matrix for?

If I want to calculate the Mahalanbois distance between a n-dimensional pt, x', and a
distribution, is the following calculation correct?

(v - x') (covariance matrix)^-1 (v - x')
where v is the mean of the distribution


Thanks in advance
Joe





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