On Thu, Aug 24, 2017 at 10:56 AM, Renato Fabbri <renato.fab...@gmail.com> wrote:
> On Thu, Aug 24, 2017 at 11:47 AM, Nathan Goldbaum <nathan12...@gmail.com> > wrote: > >> The latest version of numpy is 1.13. >> >> In this case, as described in the docs, a power function distribution is >> one with a probability desnity function of the form ax^(a-1) for x between >> 0 and 1. >> > > ok, let's try ourselves to relate the terms. > Would you agree that the "power function distribution" is a "power-law > distribution" > in which the domain is restricted to be [0,1]? > I would phrase it weaker. The emphasis for power-law distribution is often or commonly on the tail behavior. The functional form of the pdf is the same as the power-law distribution but restricted to a finite interval [0,1] or The power function distribution can be considered as a truncated power-law distribution. (I looked at it maybe 9 years ago, but gave up on the similarity because the purpose is very different, at least based on what I looked at at the time. The similarity in name also got me confused initially.) Josef > > > > >> >> On Thu, Aug 24, 2017 at 9:41 AM, Renato Fabbri <renato.fab...@gmail.com> >> wrote: >> >>> Thanks for the reply. >>> >>> But the question remains: >>> how are the terms "power function distribution" >>> and "power-law distribution" related? >>> >>> The documentation link you sent have no information on this. >>> ( >>> And seems the same as I get here >>> In [6]: n.version.full_version >>> Out[6]: '1.11.0' >>> ) >>> >>> On Thu, Aug 24, 2017 at 11:07 AM, Pauli Virtanen <p...@iki.fi> wrote: >>> >>>> to, 2017-08-24 kello 10:53 -0300, Renato Fabbri kirjoitti: >>>> > numpy.random.power.__doc__ >>>> > >>>> > uses only the term "power function distribution". >>>> >>>> The documentation in the most recent Numpy version seems to be more >>>> explicit, see the Notes section for the PDF: >>>> >>>> https://docs.scipy.org/doc/numpy/reference/generated/numpy.random.power >>>> .html >>>> <https://docs.scipy.org/doc/numpy/reference/generated/numpy.random.power.html> >>>> >>>> > BTW. how is this list related to numpy-discuss...@scipy.org? >>>> >>>> That's the old address of this list. >>>> The current address is numpy-discussion@python.org and it should be >>>> used instead. >>>> >>>> -- >>>> Pauli Virtanen >>>> _______________________________________________ >>>> NumPy-Discussion mailing list >>>> NumPy-Discussion@python.org >>>> https://mail.python.org/mailman/listinfo/numpy-discussion >>>> >>> >>> >>> >>> -- >>> Renato Fabbri >>> GNU/Linux User #479299 >>> labmacambira.sourceforge.net >>> >>> _______________________________________________ >>> NumPy-Discussion mailing list >>> NumPy-Discussion@python.org >>> https://mail.python.org/mailman/listinfo/numpy-discussion >>> >>> >> >> _______________________________________________ >> NumPy-Discussion mailing list >> NumPy-Discussion@python.org >> https://mail.python.org/mailman/listinfo/numpy-discussion >> >> > > > -- > Renato Fabbri > GNU/Linux User #479299 > labmacambira.sourceforge.net > > _______________________________________________ > NumPy-Discussion mailing list > NumPy-Discussion@python.org > https://mail.python.org/mailman/listinfo/numpy-discussion > >
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