tag:blogger.com,1999:blog-840127493134277990.post7290758227372111857..comments2023-09-23T10:51:06.332-03:00Comments on Python in Science: Further Bayesian adventuresAnonymoushttp://www.blogger.com/profile/02885581033966597420noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-840127493134277990.post-19383971378818273872008-10-19T08:23:00.000-02:002008-10-19T08:23:00.000-02:00Hi Flávio,We definitely want PyMC to be a generic ...Hi Flávio,<BR/><BR/>We definitely want PyMC to be a generic Bayesian analysis package. Ideally you should be able to create a model, then fit it with any of several algorithms.<BR/><BR/>Currently all we have is MCMC, maximum a posteriori estimates and the normal approximation, and MCMC has received the lion's share of effort... but we've tried not to privilege it in PyMC's basic design.<BR/><BR/>anandhttps://www.blogger.com/profile/12966705078989444242noreply@blogger.comtag:blogger.com,1999:blog-840127493134277990.post-22859421580142280062008-10-10T04:14:00.000-03:002008-10-10T04:14:00.000-03:00HI Anand,I haven't had time to check out the new P...HI Anand,<BR/><BR/>I haven't had time to check out the new PyMC since (as of last week at least) there was not 2.0 package for Linux and just now I decided to get the code from SVN to try it.<BR/><BR/>Anyway, congratulations for the great effort You all have put into the documentation for the 2.0 realease!<BR/><BR/>I wonder in what direction you want to take PyMC in: Make it into a python WinbugsAnonymoushttps://www.blogger.com/profile/02885581033966597420noreply@blogger.comtag:blogger.com,1999:blog-840127493134277990.post-109535690819391162008-10-09T19:32:00.000-03:002008-10-09T19:32:00.000-03:00We haven't implemented the rv package's syntax in ...We haven't implemented the rv package's syntax in PyMC, but I don't think it would be an uncomfortable fit in 2.0. <BR/><BR/>Specifically, the PyMC class that represents random variables is called 'variable'. It has subclasses 'stochastic' and 'deterministic', which are analogous to WinBugs' 'stochastic' and 'logical'. Variable could be given __add__, __mul__, etc. methods that return anandhttps://www.blogger.com/profile/12966705078989444242noreply@blogger.comtag:blogger.com,1999:blog-840127493134277990.post-42699788525932913662008-10-06T07:37:00.000-03:002008-10-06T07:37:00.000-03:00Yes, I have played with it mabe a year ago. They s...Yes, I have played with it mabe a year ago. They seem to have just release a 2.0 version of the package, so I'll take a look at it again.<BR/><BR/>Their goals are not exactly the same as mine which are closer to Gelman's rv R package.Anonymoushttps://www.blogger.com/profile/02885581033966597420noreply@blogger.comtag:blogger.com,1999:blog-840127493134277990.post-20389961731804824432008-10-05T22:49:00.000-03:002008-10-05T22:49:00.000-03:00er, I suppose I should say it's for doing Bayesian...er, I suppose I should say it's for doing Bayesian inference using MCMC in Python.jsalvatihttps://www.blogger.com/profile/16509764680257537430noreply@blogger.comtag:blogger.com,1999:blog-840127493134277990.post-23123601346030695542008-10-05T22:45:00.000-03:002008-10-05T22:45:00.000-03:00Have you seen PyMC (http://code.google.com/p/pymc/...Have you seen PyMC (http://code.google.com/p/pymc/)? I have not explored the package in depth, but it looks pretty interesting.jsalvatihttps://www.blogger.com/profile/16509764680257537430noreply@blogger.com