Add bzip2 support; may be used soon

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@532 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Undeprecate one constructor that's actually useful

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@533 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Add command line to ParameterOptimizer

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@534 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Update to Commons Compress 1.5

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@535 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Fix handling of degenerate 1-dimension case

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@536 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Better logging

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@537 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Change default alpha to 1. Change handling of negative values -- now, negative values are reconstructed as "0" in the model, not "1", and with weight equal to the absolute value of the (negative) weight. Both changes will result in different behavior, though, the second only has effect in the unusual case of negative weights in the input. Both are observed to improve results on several data sets. This is still subject to change.

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@538 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Update plugin versions

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@539 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Guava 14.0.1

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@540 0d189622-dca1-7e23-9e30-e8815eb7bd2f