Re: [Scikit-learn-general] Implementation of new Anomaly/Outlier Detection Algorithms

2014-06-28 Thread Gael Varoquaux
Hey guys, >From a very high level point of view of someone who is having a hard time reviewing the pull requests, but still tries to have a big-picture view of the project, you have a very strong support on the idea of implementing and benching in good examples those standard outlier-detection alg

Re: [Scikit-learn-general] Implementation of new Anomaly/Outlier Detection Algorithms

2014-06-24 Thread Dayvid Victor
Hi Nicholas, I have some works on outlier detection, let me know how can I help, once you start this project. Thanks, via Mobile. Dayvid V. R. Oliveira PhD candidate in Computer Science - UFPE MSc in Computer Science - UFPE Computer Engineer - UFPE On Jun 23, 2014 12:52 PM, "Nicolas Goix"

Re: [Scikit-learn-general] Implementation of new Anomaly/Outlier Detection Algorithms

2014-06-23 Thread Nicolas Goix
Hello, The following study evaluates on the DARPA 1998 data set four outlier detection algorithms : Unserpervised SVM, LOF approach, NN approach and Mahalanobis-based approach : http://static.msi.umn.edu/rreports/2003/72.pdf They find the LOF approach to be the more efficient, followed by the

Re: [Scikit-learn-general] Implementation of new Anomaly/Outlier Detection Algorithms

2014-06-20 Thread Alexandre Gramfort
hi, Nicolas, could you give some numbers on the impact of these different works to get an idea of which work might have the highest interest for the sklearn community? do they all scale to medium or large datasets? is there anybody on the list with experience with these tools? Best, Alex On Fr

[Scikit-learn-general] Implementation of new Anomaly/Outlier Detection Algorithms

2014-06-13 Thread Nicolas Goix
Hello, This is my first post to the list, I have been recently in touch with Alexandre Gramfort, and I would be very interested in exploring some outlier/anomaly detection algorithms, before eventually put it in a compatible scikit learn API (with a view to eventually merge it). I'm not particula