MAHOUT-1214 Improve the accuracy of the Spectral KMeans Method(Yiqun Hu, Zhang Da)

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1497591 13f79535-47bb-0310-9956-ffa450edef68
MAHOUT-1214: Improve the accuracy of the Spectral KMeans Method - minor code cleanup

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1497615 13f79535-47bb-0310-9956-ffa450edef68
MAHOUT-1214: Improve the accuracy of the Spectral KMeans Method - more minor cleanups.

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1497630 13f79535-47bb-0310-9956-ffa450edef68
MAHOUT-1271: classify-20newsgroups.sh fails during the seqdirectory step

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1497640 13f79535-47bb-0310-9956-ffa450edef68
MAHOUT-1271: classify-20newsgroups.sh fails during the seqdirectory step

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1497642 13f79535-47bb-0310-9956-ffa450edef68