@TechReport{Xie:2010TR,
type = "Technical Report",
author = "Zaixian Xei, Matthew O. Ward, Elke A. Rundensteiner",
title = "Visual analysis of multivariate data streams based on DOI functions.",
year = "2010",
number = "TR-10-06",
institution = "Worcester Polytechnic Institute, Computer Science Department"
}