4Eppler M J,R A Burkard.Knowledge Visualization:Towards a New Discipline and its Fields of Application.ICAWorking Paper # 2/2004,University of Lugano,2004.
5Chen C M,R J Paul.Visualizing a Knowledge Domain's Intellectual Structure.IEEE Computer,34 (3).
2[2]Keim D A.Pixel-oriented Visualization Techniques for Exploring Very Large Databases. Journal of Computational and Graphical Statistics,1996,5(1):58
3[3]Pickett R M,Grinstein G G.Iconographic Displays for Visualizing Multidimensional Data, Proc. IEEE Conf. on Systems,Man and Cybern-etics. IEEE Press,Beijing and Shenyang, 1988-05:514
4[4]Shneiderman B.Tree Visualization with Treemaps:A 2D Space-Filling Approach.ACM Transactions on Graphics, 1992,11 ( 1):92
5[5]Siirtola H.Direct Manipulation of Parallel Coordinates. Proceedings of the IEEE International Conference on Information Visualization (IV-2000), London,2000-07:373
