mahout in action 这本书主要介绍云计算领域的一些知识，有关分类，聚类和矩阵交换-mahout in action This book introduces some of the knowledge of cloud computing, the classification, clustering and matrix switching, etc.

mahout的聚类算法，采用了路透社的预料文本，出自《mahout in action》一书。-Mahout clustering algorithm