2013/1/21 Jake Vanderplas <[email protected]>: > On 01/21/2013 01:13 PM, Lars Buitinck wrote: >> 2013/1/21 Thomas Dent <[email protected]>: >>> my question was whether the 'distance' function used for weighting returns >>> the Minkowski distance as defined in Wikipedia, or instead the p-th power >>> of it. >> Good question. Judging from the code, it would seem that only >> Euclidean distance is specialized when the brute force algorithm is >> used; I'm not sure about the ball tree algorithm. This may lead to >> inconsistent results when distance weighting is enabled. > For the ball tree, the p-th root is returned. Unless you take the p-th > root, the distance is not a proper metric and the ball tree algorithm > would fail.
Alright. Then this should be easy to fix. -- Lars Buitinck Scientific programmer, ILPS University of Amsterdam ------------------------------------------------------------------------------ Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122412 _______________________________________________ Scikit-learn-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
