probability mass function fitting - MathOverflow most recent 30 from http://mathoverflow.net 2013-05-21T12:20:38Z http://mathoverflow.net/feeds/question/14819 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/14819/probability-mass-function-fitting probability mass function fitting liza 2010-02-09T22:06:27Z 2010-02-22T14:31:38Z <p>I have a probability mass function of some experimental data who's log looks like the following: (please ignore the fact that it is not normalized) <img src="http://img694.imageshack.us/img694/5408/screenshot3u.png" alt="alt text" /></p> <p>(meaning if p(x) is the pmf, this is log(p(x)) ) Does anyone know what parametric family it might belong to? (note that this is a discrete distribution)</p> http://mathoverflow.net/questions/14819/probability-mass-function-fitting/16059#16059 Answer by Felipe Olmos for probability mass function fitting Felipe Olmos 2010-02-22T14:31:38Z 2010-02-22T14:31:38Z <p>I tried taking the logarithm to the pdf of a <code>$\beta(0.5, 1.5)$</code> (see <a href="http://en.wikipedia.org/wiki/Beta%5Fdistribution" rel="nofollow">Beta distribution</a>) and it gave me this </p> <p><img src="http://img28.imageshack.us/img28/8616/screenshot20100222at112.png" alt="beta" /></p> <p>Maybe this can be fitted for your data.</p>