This tutorial on decision forests uses them for density estimation: http://research.microsoft.com/en-us/groups/vision/decisionforests.aspx
Does this fit the bill for outlier detection? On 28 February 2012 16:34, Nicholas Pilkington <[email protected]> wrote: > I was looking at it from a similar point of view to outlier detection using > a single class SVM and wondering if the technique was applicable to decision > to try and "explain" the data rather that perform classification/regression. > Haven't looked at the literature but my point of reference was decision tree > clustering of HMMs representing fragments of speech that are not tagged, > i.e., building up the decision tree without class labels using BIC/MDL and > then use it for classification. Like clustering. > > > On Tue, Feb 28, 2012 at 4:24 PM, Olivier Grisel <[email protected]> > wrote: >> >> 2012/2/28 Nicholas Pilkington <[email protected]>: >> > Is there any easy was build up a decision tree for the purposes of >> > clustering instead of for classification/regression? >> >> To me decision trees is intrinsically supervised algorithm. The split >> of node of the tree is computed by a entropy measure w.r.t. the target >> variable class distribution. How would you do that in an unsupervised >> clustering case? Do you have any reference in the literature that >> motivates this question? >> >> -- >> Olivier >> http://twitter.com/ogrisel - http://github.com/ogrisel >> >> >> ------------------------------------------------------------------------------ >> Keep Your Developer Skills Current with LearnDevNow! >> The most comprehensive online learning library for Microsoft developers >> is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, >> Metro Style Apps, more. Free future releases when you subscribe now! >> http://p.sf.net/sfu/learndevnow-d2d >> _______________________________________________ >> Scikit-learn-general mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/scikit-learn-general > > > > > -- > Nicholas C.V. Pilkington > University of Cambridge > > ------------------------------------------------------------------------------ > Keep Your Developer Skills Current with LearnDevNow! > The most comprehensive online learning library for Microsoft developers > is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, > Metro Style Apps, more. Free future releases when you subscribe now! > http://p.sf.net/sfu/learndevnow-d2d > _______________________________________________ > Scikit-learn-general mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/scikit-learn-general > ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Scikit-learn-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
