Refereed  Papers


  1. S. OLiVEIRA and T. SOMA, A Mathematical Model for Load Balancing. Proceedings of The Sixth (6th) International Conference of Numerical Analysis and Applied Mathematics. Kos, Greece, September 2008.

  2. S. OLIVEIRA, J. F. F. RIBEIRO and S. C. SEOK, A Comparative Study of Similarity Measures forManufacturing Cell Formation, to appear in journal of Manufacturing Systems.

  3. S. LE BORNE, S. OLIVEIRA, AND F. YANG, H-matrices preconditioners for symmetric saddle-point systems from meshfree discretizations, to appear in Numerical Linear Algebra and its Applications.

  4. S. OLIVEIRA AND S.C. SEOK,   A Matrix-based Multilevel Approach to Identify Functional Protein Modules, to appear in Int. J. Bioinformatics Research and Applications, (2007). (pdf)

  5. S. Le BORNE AND S. OLIVEIRA,   Joint Domain-Decomposition H-LU preconditioners for saddle-point Problems ,  Electronic Transactions on Numerical Analysis, 26 (2007), pp. 285-298. (pdf)

  6. S. OLIVEIRA AND S.C. SEOK,   Multilevel approaches for large scale proteomic networks,  International Journal of Computer Mathematics, 84(5) (2007), pp. 683-695. (postscript) and (pdf)

  7. S. OLIVEIRA AND F. YANG,  H-matrix preconditioners for Invariant Probability Distribution in Dynamical Systems, Proceedings of the International Conference on Computational and Mathematical Methods in Science and Engineering, CMMSE 2007, Chicago 20-23, June 2007.  (pdf)

  8. S. OLIVEIRA AND F. YANG,    An Algebraic Approach for H-Matrices Preconditioners,  Computing, 80 (2007), pp. 169-188. (postscript) and (pdf)

  9. S. OLIVEIRA AND F. YANG,    Hierarchical Preconditioners for Parabolic Optimal Control Problems,  ICCS Proceedings, Lectures Notes in Computer Science 4487, Springer 2007, pp. 221-228. (pdf)

  10. S. OLIVEIRA AND F. YANG,    H-matrix preconditioners for saddle-point systems from meshfree discretization, 14th International Conference on Computational & Experimental Engineering and Sciences - ICCES07, Minisymposium on Meshfree Methods and Applications Proceedings. (pdf)

  11. S. OLIVEIRA AND S.C. SEOK,    Triangular clique based multilevel approaches to identify protein functional modules, 7th International Conference High Performance Computing for Computational Science - VECPAR 2006, Selected Papers and Invited Talks. Lecture Notes in Computer Science 4396, Springer 2006, pp. 556-565. (pdf)

  12. S. OLIVEIRA AND S.C. SEOK,  A multilevel approach to identify functional modules in a Yeast Protein-Protein interaction network, 2nd International Workshop on Bioinformatics Research and Applications - 6th International Conference Computational Science - ICCS 2006, Lecture Notes in Computer Science  3992, Springer 2006,  pp.  726--733. (pdf)

  13. C. CARTWRIGHT, S. OLIVEIRA AND D. STEWART, Parallel support set searches for meshfree methods , SIAM Journal on Scientific Computing,  28(4) (2006),  pp. 1318-1334.  (pdf) or (postscript) 

  14. S. OLIVEIRA, AND S.C. SEOK, Spectral document clustering algorithms with different data structures, Proceedings of The 2005 International Conference on Scientific Computing - CSC'05,  pp. 223-229.

  15. S. OLIVEIRA AND S.C. SEOK, A multilevel approach for document clustering, 5th International Conference on Computational Science - ICCS 2005, Lecture Notes in Computer Science 3514,  Springer 2005, pp. 204-211.  (pdf) or (postscript)

  16. K. H. LEEM, S. OLIVEIRA AND D. STEWART, Algebraic multigrid (AMG) for saddle point systems from meshfree discretizations,  Numerical Linear Algebra and Applications, 11(3) (2004),  pp. 293-308.  (pdf) or (postscript)

  17. S. OLIVEIRA, T. SOMA AND D.  STEWART,  Semidefinite programming for graph partitioning with preference in data distribution,  5th International Conference High Performance Computing for Computational Science - VECPAR 2002, Selected Papers and Invited Talks.    Lecture Notes in Computer Science 2565,  Springer-Verlag Heidelberg,  2003 , pp.703-716. (pdf)

  18. S. OLIVEIRA, T. SOMA AND D.  STEWART,  A subspace semidefinite programming for spectral graph partitioning, International Conference on Computational Science - ICCS 2002 Part I,  Lecture Notes in Computer Science 2329,  Springer,  pp. 1058--1067. (pdf)

  19.  S. OLIVEIRA,   Exact prediction of QR fill-in by row-merge trees. SIAM Journal on Scientific Computing, 22(6) (2001), pp. 1962-1973  (pdf) or (postscript)

  20. D.K. FRIESEN,   S. OlIVEIRA, AND J. ZHANG, A New efficient parallel algorithm for computing eigenvalues of symmetric tridiagonal  matrices,  Proceedings of the Tenth SIAM Conference on Parallel Processing for Scientific Computing, Portsmouth, Virginia, March 2001.

  21. C. CARTWRIGHT, S. OLIVEIRA AND D. STEWART, A parallel quadtree algorithm for efficient assembly of stifness matrices in meshfree Galerkin methods,  Proceedings of Irregular 2001, International Parallel and Distributed Processing Symposium, April 2001. Published by IEEE Computer Society.

  22. X. HAN, S. OLIVEIRA AND D. STEWART, Finding sets covering a point with applications to meshfree Galerkin methods, SIAM Journal on Computing, 30(4) (2000), pp. 1368-1383 (pdf) or (postscript)

  23. S. OLIVEIRA AND D. STEWART, Exponential splittings of  product of  matrices and accurately computing singular values of long products, Linear Algebra and Its Applications, 310 (2000), pp. 175-190.  (pdf) or (postscript)

  24. S. OLIVEIRA AND  T.  SOMA, "A multilevel algorithm for spectral partitioning with extended eigen-models", In  Lecture Notes in Computer Science1800, Springer,  May 2000,  pp. 477--484.

  25. S. OLIVEIRA, L. BORGES, M. HOLZRICHTER, AND T. SOMA, Analysis of different partitioning schemes for parallel Gram-Schmidt algorithms, Parallel Algorithms and Applications. 14(4)  (2000), pp. 293-320. (pdf) or (postscript)

  26. S. OLIVEIRA, On the convergence rate of a preconditioned subspace eigensolver, Computing, 63 (1999), pp. 219-231. (pdf) or (postscript)

  27. M. HOLZRICHTER AND S. OLIVEIRA, A graph based Davidson algorithm for the graph partitioning problem, International Journal of Foundations of Computer Science, 10 (1999), pp. 225-246. (pdf) or (postscript)

  28. M. HOLZRICHTER AND S. OLIVEIRA, A graph based method for generating the Fiedler vector of irregular problems, in Parallel and Distributed Processing, Lecture Notes in Computer Science 1586, Springer, April 1999, pp. 978-985.

  29. L. BORGES AND S. OLIVEIRA, A parallel solver for extreme eigenvalues, in Proceedings of Europar 98, Lecture Notes in Computer Science 1470, Springer, September 1998, pp. 763-770.

  30. L. BORGES AND S. OLIVEIRA, A parallel Davidson-type algorithm for several eigenvalues, Journal of Computational Physics,  144 (1998), pp. 727-748. (pdf) or (postscript)

  31. S. OLIVEIRA, Analysis of a multigrid method for a transport equation by numerical fourier analysis, Computers and Mathematics with Applications, 35 (1998), pp. 7-12. (pdf) or (postscript)

  32. S. OLIVEIRA, A new parallel chasing algorithm for transforming arrowhead matrices to tridiagonal form, Mathematics of Computation, 67 (1998), pp. 221-235. (pdf) or (postscript)

  33. S. OLIVEIRA AND Y. DENG, Preconditioned Krylov subspace for transport equations, Progress in Nuclear Energy, 33 (1998), pp. 155-174. (pdf) or (postscript)

  34. S. OLIVEIRA AND T. SOMA, New partitioning schemes for parallel modified Gram-Schmidt orthogonalization, in Proceedings of the 1997 International Symposium on Parallel Architectures, Algorithms and Networks - ISPAN97, F. Lai, B. Maggs, and F. Hsu, eds., IEEE Computer Society, December 1997, pp. 233-239.

  35. Z. CHEN, Y. DENG AND S. OLIVEIRA, An efficient parallel chasing algorithm, in SIAM Conference on Parallel Processing for Scientific Computing Proceedings, March 1997.  CD-ROM publication (6 pages).

  36. S. OLIVEIRA, A convergence proof of an iterative subspace method for eigenvalues problem, in Foundations of Computational Mathematics Selected Papers, F. Cucker and M. Shub, eds., Springer, January 1997, pp. 316-325.

  37. S. OLIVEIRA, Parallel multigrid methods for transport equations: The anisotropic case, Parallel Computing, 22 (1996), pp. 513-537. (pdf) or (postscript)

  38. S. OLIVEIRA, A preconditioned multigrid subspace algorithms for computing eigenvalues and eigenvectors, in Proceedings of Algebraic Multilevel Iterative Methods with Applications, Nijmegen, June 1996, pp. 229-232.

  39. S. OLIVEIRA, Multigrid and Krylov subspace methods for transport equations: Absorption case, in Proceedings of the 7th Copper Mountain Conference on Multigrid Methods, NASA Conference Publications, September 1996, pp. 637-648.

  40. T. MANTEUFFEL, S. MCCORMICK, J. MOREL, S. OLIVEIRA, AND G. YANG, Fast multigrid solver for transport problems I: Pure scattering, SIAM Journal on Scientific Computing, 16 (1995), pp. 601-635. (pdf) or (postscript)

  41. S. OLIVEIRA, Krylov subspace methods for transport equations, in 10th ENFIR Meeting on Reactor Physics, August 1995, pp. 522-527.

  42. S. OLIVEIRA, A parallel multilevel algorithm for anisotropic transport equations, in Computational Techniques and Applications Conference (CTAC93), July 1994, pp. 388-396.

  43. T. MANTEUFFEL, S. MCCORMICK, J. MOREL, S. OLIVEIRA, AND G. YANG, A parallel version of a multigrid algorithm for isotropic transport equations, SIAM Journal on Scientific Computing, 15 (1994), pp. 474-493. (pdf) or (postscript)

  44. R. A. SWEET, W. L. BRIGGS, S. OLIVEIRA, J. L. PORSCHE AND T. TURNBULL, FFTs and three-dimensional Poisson solvers for hypercubes, Parallel Computing, 17 (1991), pp. 121-131.
    45.