1John G, David R. THE DIGITAL UNIVERSE IN 2020: Big Data, Bigger Digital Shadows, and Biggest Grow the in the FarEast [ EB/OL] .(2013-02-01 ).http://www.emc.com/collat- eral/analyst-reports/idc-digital-universe-united-states.pdf.
2Chickering D.M, Heckerman D, Meek C. A Bayesian Ap- proach for I-earning Bayesian Networks wittl Local Structure [ C ]//Proceedings of 13th Conference on Uncertainty in Ar- tificial Intelligence. Los Angeles, CA, 1997: 80-89.
3Schutze H, Hull D, Pedersen J. A Comparison of Classifiers and Document Representations for the Routing Problem [C]// Proceedings of the 18th ACM International Confer- ence on Research and Development in Information Retrieval. Seattle, USA, 1995: 229-237.
