Vasileios Kalantzis  Vasileios Kalantzis photo         

contact information

Herman H. Goldstine Memorial Postdoctoral Fellow
IBM Research, Thomas J. Watson Research Center, NY USA
  

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Professional Associations

Professional Associations:  ACM  |  Society for Industrial and Applied Mathematics


2019

Domain Decomposition Rayleigh-Ritz Approaches for Symmetric Generalized Eigenvalue Problems
Vassilis Kalantzis
Technical Report, 2019

A Spectral Newton-Schur Algorithm for the Solution of Symmetric Generalized Eigenvalue Problems
Vassilis Kalantzis
Technical Report, 2019

Stable Computation of Generalized Matrix Functions via Polynomial Interpolation
Jared L. Aurentz, Anthony P. Austin, Michele Benzi, Vassilis Kalantzis
SIAM Journal on Matrix Analysis and Applications 40(1), 210-234, 2019

TeraPCA: a Fast and Scalable Method to Study Genetic Variation in Tera-scale Genotypes
Aritra Bose, Vassilis Kalantzis, Eugenia M. Kontopoulou, Mai Elkadi, Peristera Paschou, Petros Drineas
Bioinformatics (To Appear), 2019


2018

EigenRec: generalizing PureSVD for effective and efficient top-N recommendations
Athanasios N. Nikolakopoulos, Vassilis Kalantzis, Efstratios Gallopoulos, John D. Garofalakis
Knowledge and Information Systems 58(1), pp. 59-81, 2018

Domain decomposition approaches for accelerating contour integration eigenvalue solvers for symmetric eigenvalue problems
Vassilis Kalantzis, James Kestyn, Eric Polizzi, Yousef Saad
Numerical Linear Algebra with Applications 25(5), 2018

A scalable iterative dense linear system solver for multiple right-hand sides in data analytics
Vassilis Kalantzis, A. Cristiano I. Malossi, Costas Bekas, Alessandro Curioni, Efstratios Gallopoulos, Yousef Saad
Parallel Computing 74, pp. 136-153, 2018

A Hierarchical Low Rank Schur Complement Preconditioner for Indefinite Linear Systems
Geoffrey Dillon, Vassilis Kalantzis, Yuanzhe Xi, Yousef Saad
SIAM Journal on Scientific Computing 40(4), A2234-A2252, 2018

Beyond Automated Multilevel Substructuring: Domain Decomposition with Rational Filtering
Vassilis Kalantzis, Yuanzhe Xi, Yousef Saad
SIAM Journal on Scientific Computing 40(4), C477-C502, 2018


2017

Cucheb: A GPU implementation of the filtered Lanczos procedure
Jared L. Aurentz, Vassilis Kalantzis, Yousef Saad
Computer Physics Communications 220, pp. 332-340, 2017

Factored proximity models for top-n recommendations
Athanasios N Nikolakopoulos, Vassilis Kalantzis, Efstratios Gallopoulos, John D Garofalakis
Big Knowledge (ICBK), 2017 IEEE International Conference on, pp. 80--87


2016

Estimating the trace of the matrix inverse by interpolating from the diagonal of an approximate inverse
Lingfei Wu, Jesse Laeuchli, Vassilis Kalantzis, Andreas Stathopoulos, Efstratios Gallopoulos
Journal of Computational Physics 326, pp. 828-844, 2016

Spectral Schur complement techniques for symmetric eigenvalue problems
Vassilis Kalantzis, Ruipeng Li, Yousef Saad
Electronic Transactions on Numerical Analysis 45, pp. 305-329, 2016

PFEAST: A High Performance Sparse Eigenvalue Solver Using Distributed-memory Linear Solvers
James Kestyn, Vassilis Kalantzis, Eric Polizzi, Yousef Saad
In Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis, pp. 16:1--16:12, IEEE Press, 2016


2013

Accelerating data uncertainty quantification by solving linear systems with multiple right-hand sides
Vassilis Kalantzis, Costas Bekas, Alessandro Curioni, Efstratios Gallopoulos
Numerical Algorithms 62(4), pp. 637-653, 2013