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From Mikkel Meyer Andersen <>
Subject Re: [math] meaning of "support" in distributions classes
Date Mon, 03 Jan 2011 07:23:48 GMT

You're right, Phil. Support for beta is [0, 1] and not (0, 1) as stated on
Wikipedia. As you mention, support for continuous distributions is closed,
hence the corresponding isInclusive-functions can be discussed. I thought
about it being useful for infinity, but we could let users deal with this

Cheers, Mikkel.
Den 02/01/2011 23.05 skrev "Phil Steitz" <>:
> We don't precisely define what we mean by the support of a distribution
> anywhere. I have been assuming that we mean the smallest closed set such
> that its complement has probability 0. This would make, for example, the
> support of the Beta distribution [0, 1] independent of the parameters. But
> then isSupportLowerBoundInclusive currently returns false for Beta. I must
> have one of the concepts wrong. Could it be that the
> upper/lowerboundInclusive attributes are only meaningful in the discrete
> case?
> Phil

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