Journal
Reducing Operator Complexity of Galerkin Coarsegrid Operators with Machine Learning
[Paper]
R. Huang, K. Chang, H. He, R. Li and Y. Xi
SIAM J. Sci. Comput., to appear (2024).
An Adaptive Factorized NystrÃ¶m Preconditioner for Regularized Kernel Matrices
[Paper] [Code]
S. Zhao, T. Xu, H. Huang, E. Chow and Y. Xi
SIAM J. Sci. Comput., to appear (2024).
NLTGCR: A class of Nonlinear Acceleration Procedures based on Conjugate Residuals
[Paper] [Code]
H. He, Z. Tang, S. Zhao, Y. Saad and Y. Xi
SIAM J. Matrix Anal. Appl., 45, (2024), pp 712–743.
DataDriven Linear Complexity LowRank Approximation of General Kernel Matrices: A Geometric Approach
[Paper] [Code]
D. Cai, E. Chow and Y. Xi
Numer. Linear Algebra Appl., 2023, e2519.
Datadriven construction of hierarchical matrices with nested bases
[Paper] [Code]
D. Cai, H. Huang, E. Chow and Y. Xi
SIAM J. Sci. Comput., (2023), S24S50.
Learning optimal multigrid smoothers via neural networks
[Paper] [Code]
R. Huang, R. Li, and Y. Xi
SIAM J. Sci. Comput., 43 (2022), S199S225.
parGeMSLR: A Parallel Multilevel Schur Complement LowRank Preconditioning and Solution Package for General Sparse Matrices
[Paper] [Code]
T. Xu, V. Kalantzis, R. Li, Y. Xi, G. Dillon, and Y. Saad
Parallel Comput., 113 (2022), 102956.
Fast deterministic approximation of symmetric indefinite kernel matrices with high dimensional datasets
[Paper] [Code]
D. Cai, J. Nagy, and Y. Xi
SIAM J. Matrix Anal. Appl., 43 (2022), pp 1003–1028.
A RayleighRitz method based approach to computing seismic normal modes in the presence of an essential spectrum
[Paper] [Code]
J. Shi, R. Li, Y. Xi, Y. Saad, and M. de Hoop
J. Sci Comput., 91 (2022).
Fast randomized nonHermitian eigensolvers based on rational filtering and matrix partitioning
[Paper]
V. Kalantzis, Y. Xi, and L. Horesh
SIAM J. Sci. Comput., 43 (2021), S791S815.
Preconditioning via GMRES in polynomial space
[Paper] [Code]
X. Ye, Y. Xi, and Y. Saad
SIAM J. Matrix Anal. Appl., 42 (2021), pp 1248–1267.
A power Schur complement lowrank correction preconditioner for general sparse linear systems
[Paper] [Code]
Q. Zheng, Y. Xi and Y. Saad
SIAM J. Matrix Anal. Appl., 42 (2021), pp 659–682.
Planetary normal mode computation: Parallel algorithms, performance, and reproducibility
[Paper] [Code]
J. Shi, R. Li, Y. Xi, Y. Saad and M. de Hoop
IEEE Transactions on Parallel and Distributed Systems, (2021), PP(99):11.
An ADMMLAP method for total variation myopic deconvolution of adaptive optics retinal images
[Paper]
X. Chen, J. Herrig, J. Nagy, Y. Xi and B. Yu
Inverse Problems, (2021), 37.
MultiColor LowRank preconditioner for general sparse linear systems
[Paper] [Code]
Q. Zheng, Y. Xi and Y. Saad
Numer. Linear Algebra Appl., (2020), 27:e2316.
Solving the 3D highfrequency Helmholtz equation using contour integration and polynomial preconditioning
[Paper] [Code]
X. Liu, Y. Xi, Y. Saad and M. de Hoop
SIAM J. Matrix Anal. Appl., 41 (2020), pp. 5882.
EVSL: Eigenvalues slicing library: Algorithms, methods and software description
[Paper] [Code]
R. Li, Y. Xi, L. Erlandson and Y. Saad
SIAM J. Sci. Comput., 41 (2019), pp. C393C415.
Structured FISTA for Image Restoration
[Paper]
Z. Chen, J. Nagy, Y. Xi, and B. Yu
Numer. Linear Algebra Appl., 27(2) (2019), e2278.
Fast computation of spectral densities for generalized eigenvalue problems
[Paper]
Y. Xi, R. Li and Y. Saad
SIAM J. Sci. Comput., 40 (2018), pp. A2749A2773.
SMASH: Structured matrix approximation by separation and hierarchy
[Paper]
D. Cai, E. Chow, L. Erlandson, Y. Saad, and Y. Xi
Numer. Linear Algebra Appl., (2018), 25:e2204.
A hierarchical lowrank Schur complement preconditioner for indefinite linear systems
[Paper] [Code]
G. Dillon, V. Kalantzis, Y. Xi and Y. Saad
SIAM J. Sci. Comput. 404 (2018), pp. A2234A2252.
Beyond AMLS: Domain Decomposition with rational filtering
[Paper]
V. Kalantzis, Y. Xi and Y. Saad
SIAM J. Sci. Comput., 40 (2018), pp. C477C502.
A rational function preconditioner for indefinite sparse linear systems
[Paper]
Y. Xi and Y. Saad
SIAM J. Sci. Comput., 39 (2017), pp. A1145A1167.
Computing partial spectra with leastsquares rational filters
[Paper]
Y. Xi and Y. Saad
SIAM J. Sci. Comput., 38 (2016), pp. A3020A3045.
On the stability of some hierarchical rank structured matrix alogrithms
[Paper]
Y. Xi and J. Xia
SIAM J. Matrix Anal. Appl., 37 (2016), pp. 12791303.
A ThickRestart Lanczos algorithm with polynomial filtering for Hermitian eigenvalue problems
[Paper] [code]
R. Li, Y. Xi, E. Vecharynski, C. Yang, and Y. Saad
SIAM J. Sci. Comput., 38 (2016), pp. A2512A2534.
Schur complement based domain decomposition preconditioners with lowrank corrections
[Paper] [code]
R. Li, Y. Xi, and Y. Saad
Numer. Linear Algebra Appl., 23(4) (2016), pp. 706729.
An algebraic multilevel preconditioner with lowrank corrections for sparse symmetric matrices
[Paper] [code]
Y. Xi, R. Li, and Y. Saad
SIAM J. Matrix Anal. Appl., 37 (2016), pp. 235259.
Fast sparse selected inversion
[Paper]
J. Xia, Y. Xi, S. Cauley, and V. Balakrishnan
SIAM J. Matrix Anal. Appl., 36 (2015), pp. 12831314.
Fast reconstruction for multichannel compressed sensing using a hierarchically semiseparable solver
[Paper]
S. Cauley, Y. Xi, B. Bilgic, J. Xia, E. Adalsteinsson, V. Balakrishnan, L. Wald, and K. Setsompop
Magn. Reson. Med., 73 (2015), pp. 10341040.
A fast randomized eigensolver with structured LDL factorization update
[Paper]
Y. Xi, J. Xia, and R. Chan
SIAM J. Matrix Anal. Appl., 35 (2014), pp. 974996.
Superfast and stable structured solvers for Toeplitz least squares via randomized sampling
[Paper]
Y. Xi, J. Xia, S. Cauley, and V. Balakrishnan
SIAM J. Matrix Anal. Appl., 35 (2014), pp. 4472.
A superfast structured solver for Toeplitz linear systems via randomized sampling
[Paper]
J. Xia, Y. Xi, and M. Gu
SIAM J. Matrix Anal. Appl., 33 (2012), pp. 837858.
Conference
A Flexible Generative Model for Heterogeneous Tabular EHR with Missing Modality
[Paper] [Code]
H. He, W. Hao, Y. Xi, Y. Chen, B. Malin, J. Ho
In International Conference on Learning Representations (ICLR) 2024.
UncertaintyAware PreTrained Foundation Models for Patient Risk Prediction via Gaussian Process
[Paper] [Code]
J Lu, S Zhao, W Ma, H Shao, X Hu, Y Xi, C Yang
In the 2024 ACM Web Conference (HealthDay Track).
MuG: A Multimodal Classification Benchmark on Game Data with Tabular, Textual, and Visual Fields
[Paper] [Code]
J. Lu, Y. Qian, S. Zhao, Y. Xi, C. Yang
In Findings of EMNLP'23.
AUTM Flow: Atomic Unrestricted Time Machine for Monotonic Normalizing Flows
[Paper] [Code]
D. Cai, Y. Ji, H. He, Q. Ye and Y. Xi
In International Conference on Uncertainty in Artificial Intelligence (UAI) 2022.
GDAAM: Solve Minimax Optimizaton by Anderson Mixing
[Paper] [Code]
H. He, S. Zhao, Y. Xi, J. Ho, Y. Saad
In International Conference on Learning Representations (ICLR) 2022.
Fast and Accurate Tensor Decomposition without a HighPerformance Computing Machine
[Paper] [Code]
H. He, Y. Xi, J. Ho
In International Conference on BigData (BIGDATA) 2020.
Accelerating Parallel Hierarchical MatrixVector Products via DataDriven Sampling
[Paper]
L. Erlandson, D. Cai, Y. Xi and E. Chow
34th IEEE International Parallel and Distributed Processing Symposium (IPDPS), New Orleans, LA, 2020.
Computing Planetary Interior Normal Modes with A Highly Parallel Polynomial Filtering Eigensolver
[Paper] [code]
J. Shi, R. Li, Y. Xi, Y. Saad and M.V. de Hoop
International Conference for High Performance Computing, Networking, Storage, and Analysis (SC18), Dallas, TX, Nov. 1116, 2018.
Workshop
AGE: Enhancing the Convergence on GANs using Alternating extragradient with Gradient Extrapolation
H. He, Y. Xi, J. Ho
In Deep Generative Models (DGMs) and Applications @ NeurIPS 2021 Oral.
Accelerated SGD for tensor decomposition of sparse count data
H. He, Y. Xi, Joyce C Ho.
In International Conference on Data Mining Workshops (ICDMW) 2020.
