Hi Isabel-san. I am coding MAHOUT-928 (Add the ARFF data loader/converter on DF) and found the mahout's ARFF support cannot treat the "real" and "integer" datatype.
This topic had been discussed on the thread below, but maybe not posted to jira. http://lucene.472066.n3.nabble.com/how-is-the-Vector-format-tp1421926p1452925.html So is it OK I make a new JIRA issue? Regards, - - - - - - - IKumasa Mukai at Recruit Co.,Ltd.