Changed an IllegalArgumentException to an IOException

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka@10094 e0a1b77d-ad91-4216-81b1-defd5f83fa92
Correlation job now outputs an additional file that contains the individual correlation entries (one per line) listed as row,column,corr. Fixed a few minor issues relating to the resolving of environment variables. Arff mapper now stores any exception that occurs during mapping and throws it in the cleanup() method.

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka@10095 e0a1b77d-ad91-4216-81b1-defd5f83fa92
Made changes to improve memory consumption of final model. Now just stores, per-node, one SimpleLinearRegressionModel for each attribute. Previously, SimpleLinearRegressionModel objects for all boosting iterations from the root to that node were stored. The change can also improve runtime. The changes have a positive effect when the number of instances is large relative to the number of attributes.

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka@10096 e0a1b77d-ad91-4216-81b1-defd5f83fa92
More changes from Eibe: Made changes to improve memory consumption of final model. Now just stores, per-node, one SimpleLinearRegressionModel for each attribute. Previously, SimpleLinearRegressionModel objects for all boosting iterations from the root to that node were stored. The change can also improve runtime. The changes have a positive effect when the number of instances is large relative to the number of attributes.

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka@10097 e0a1b77d-ad91-4216-81b1-defd5f83fa92
Now allows a user-supplied setting for mapred.tasktracker.reduce.tasks.maximum to override the default for the cluster

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka@10098 e0a1b77d-ad91-4216-81b1-defd5f83fa92
Now clears user-supplied properties before setting options

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka@10099 e0a1b77d-ad91-4216-81b1-defd5f83fa92