As of January 2014, a copy of this site is available at https://github.com/probml/pmtkdata

This site contains datasets for machine learning in matlab format. Click here for a list of the data sets. Each folder contains a datafile in matlab format, a text 'meta file' describing the data, and possibly other auxiliary files e.g., the data in its original text or binary format, parsing functions, etc.

These datasets are used by some of the demos in http://code.google.com/p/pmtk3/'>Probabilistic modeling toolkit (PMTK) . You do not need pmtk to use this data. However, the pmtk function loadData.m can automatically download data on demand from this web site, avoiding the need to manually download anything.

You can also use the pmtk command downloadAllData to download all of the data sets at once, although this is slow. If you do download directly, you should edit the config.txt file (or create local-config.txt) to specify the location of the data directories.

Contributors of data to this site should follow the guidelines here to ensure their data is easily accessible by others.