Dimitrios Zeimpekis
PhD Student, Department of Computer Engineering & Informatics
University of Patras, Greece
Voice: +30 261 0996915
Email: zeimpekis (at) gmail (dot) com
RESEARCH INTERESTS
Information Retrieval, Numerical Linear Algebra, Scientific Computing, Parallel Computing
BOOK CHAPTERS
- D. Zeimpekis and E. Gallopoulos, Principal Direction Divisive Partitioning with Kernels and k-Means Steering. In Survey of Text Mining II: Clustering, Classification and Retrieval, Michael W. Berry and Malu Castellanos eds., pp. 45-64, Springer, 2008.
- D. Zeimpekis and E. Gallopoulos. TMG: A MATLAB Toolbox for Generating Term-Document Matrices from Text Collections. In J. Kogan,
C. Nicholas, and M. Teboulle, editors, Grouping Multidimensional Data: Recent Advances in Clustering, pp. 187-210. Springer, Berlin, 2006.
REFEREED CONFERENCE PROCEEDINGS
- D. Zeimpekis and E. Gallopoulos, Document Clustering using NMF based on Spectral Information. In Proc. Text Mining Workshop 2008 held in conjunction with the 8th SIAM International Conference on Data Mining, Atlanta, 2008.
- D. Zeimpekis and E. Gallopoulos. k-means Steering of Spectral Divisive Clustering Algorithms. In Proc. of the 2007 Text Mining Workshop held in conjunction with the 7th SIAM International Conference on Data Mining, Minneapolis, 2007.
- D. Zeimpekis and E. Gallopoulos. Linear and Non-Linear Dimensional Reduction via Class Representatives for Text Classification. In Proc. of the 2006 IEEE International Conference on Data Mining, pp. 1172-1177, December 2006, Hong Kong (pdf).
- D.K. Tasoulis, D. Zeimpekis, E. Gallopoulos and M.N. Vrahatis. Oriented k-windows: A PCA driven Clustering Method. In Proc. of the 2nd Workshop in Algorithmic Techniques for Data Mining (ATDM), published in "Advances in Web Intelligence and Data Mining", M. Last, P.S. Szcepaniak, Z. Volkovich and A. Kandel eds., Springer Studies in Computational Intelligence, v. 23, pp. 319-328, 2006 (pdf).
- D. Zeimpekis and E. Gallopoulos. Design of a MATLAB Toolbox for Term-Document Matrix Generator, in Proc. SDM'05 Workshop on Clustering High Dimensional Data, Newport Beach, California, 2005 (ps).
- D. Zeimpekis and E. Gallopoulos. CLSI: A Flexible Approximation Scheme from Clustered Term-Document Matrices, Proc. 5th SIAM International Conference on Data Mining, Newport Beach, California, 2005. For an extended version, see Tech. Report HPCLAB-SCG 2/10-04.
- D. Zeimpekis and E. Gallopoulos. PDDP(l): Towards a Flexible Principal Direction Divisive Partitioning Clustering Algorithm, in Proc. IEEE ICDM '03 Workshop on Clustering Large Data Sets, pp. 26-35, D. Boley, I. Dhillon, J. Ghosh and J. Kogan eds., Melbourne, Florida, Nov. 2003 (ps).
SOFTWARE
D. Zeimpekis and E. Gallopoulos. Text to Matrix Generator: A MATLAB toolbox for indexing, dimesionality reduction, clustering, retrieval and classification on text collections (user manual, pdf, html).