Re: [Haskell-cafe] design question: decision tree from "Programming Collective Intelligence"

2010-08-04 Thread S. Doaitse Swierstra
I have added the permutation parsers from uulib to uu-parsinglib: http://hackage.haskell.org/packages/archive/uu-parsinglib/2.5.1.1/doc/html/Text-ParserCombinators-UU-Perms.html, where you find reference to the paper Doaitse On 22 jun 2010, at 09:24, Stephen Tetley wrote: > Hello > > Maybe "

Re: [Haskell-cafe] design question: decision tree from "Programming Collective Intelligence"

2010-06-24 Thread Jason Dagit
On Mon, Jun 21, 2010 at 11:22 AM, Daniel Lyons wrote: > Hi, > > I'm having a little trouble figuring out precisely how to port the decision > tree code from the book "Programming Collective Intelligence." You can see > the code here: > http://code.google.com/p/memothing/source/browse/trunk/PCI/ch7

Re: [Haskell-cafe] design question: decision tree from "Programming Collective Intelligence"

2010-06-22 Thread Stephen Tetley
Hello Maybe "permutation trees" are a viable starting point? See the paper "Parsing Permutation Phrases" which appears to be on CiteSeer. Some slides are also here - the data type definitions and Functor instance for permutation trees are on page 18 (pdf index page 19): http://www.comlab.ox.ac.u

[Haskell-cafe] design question: decision tree from "Programming Collective Intelligence"

2010-06-21 Thread Daniel Lyons
Hi, I'm having a little trouble figuring out precisely how to port the decision tree code from the book "Programming Collective Intelligence." You can see the code here: http://code.google.com/p/memothing/source/browse/trunk/PCI/ch7/treepredict.py?r=29 The design issue is that this code depend