Sivaram Ambikasaran

According to our database, Sivaram Ambikasaran authored at least 19 papers between 2013 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2024

HODLR<i>d</i>D: A new black-box fast algorithm for <i>N</i>-body problems in <i>d</i>-dimensions with guaranteed error bounds: Applications to integral equations and support vector machines.

Ritesh Khan, V. A. Kandappan, Sivaram Ambikasaran

J. Comput. Phys., March, 2024

Algebraic Inverse Fast Multipole Method: A fast direct solver that is better than HODLR based fast direct solver.

Vaishnavi Gujjula, Sivaram Ambikasaran

J. Comput. Phys., January, 2024

A hybrid interpolation ACA accelerated method for parabolic boundary integral operators.

Sivaram Ambikasaran, Ritesh Khan, Johannes Tausch, Sihao Wang

CoRR, 2024

2023

HODLR2D: A New Class of Hierarchical Matrices.

V. A. Kandappan, Vaishnavi Gujjula, Sivaram Ambikasaran

SIAM J. Sci. Comput., October, 2023

New algebraic fast algorithms for N-body problems in two and three dimensions.

Ritesh Khan, Sivaram Ambikasaran

CoRR, 2023

HODLR3D: Hierarchical matrices for N-body problems in three dimensions.

V. A. Kandappan, Vaishnavi Gujjula, Sivaram Ambikasaran

CoRR, 2023

2022

Numerical rank of singular kernel functions.

Ritesh Khan, V. A. Kandappan, Sivaram Ambikasaran

CoRR, 2022

A new Directional Algebraic Fast Multipole Method based iterative solver for the Lippmann-Schwinger equation accelerated with HODLR preconditioner.

Vaishnavi Gujjula, Sivaram Ambikasaran

CoRR, 2022

A new Nested Cross Approximation.

Vaishnavi Gujjula, Sivaram Ambikasaran

CoRR, 2022

2019

HODLRlib: A Library for Hierarchical Matrices.

Sivaram Ambikasaran, Karan Singh, Shyam Sankaran

J. Open Source Softw., 2019

2016

Fast, Adaptive, High-Order Accurate Discretization of the Lippmann-Schwinger Equation in Two Dimensions.

Sivaram Ambikasaran, Carlos Borges, Lise-Marie Imbert-Gérard, Leslie Greengard

SIAM J. Sci. Comput., 2016

Fast Direct Methods for Gaussian Processes.

Sivaram Ambikasaran, Daniel Foreman-Mackey, Leslie Greengard, David W. Hogg, Michael O'Neil

IEEE Trans. Pattern Anal. Mach. Intell., 2016

A fast block low-rank dense solver with applications to finite-element matrices.

Amirhossein Aminfar, Sivaram Ambikasaran, Eric Darve

J. Comput. Phys., 2016

2015

Generalized Rybicki Press algorithm.

Sivaram Ambikasaran

Numer. Linear Algebra Appl., 2015

2014

A Fast Direct Solver for High Frequency Scattering from a Large Cavity in Two Dimensions.

Jun Lai, Sivaram Ambikasaran, Leslie Greengard

SIAM J. Sci. Comput., 2014

A Kalman filter powered by H²-matrices for quasi-continuous data assimilation problems.

Judith Y. Li, Sivaram Ambikasaran, Eric Darve, Peter K. Kitanidis

CoRR, 2014

Fast symmetric factorization of hierarchical matrices with applications.

Sivaram Ambikasaran, Michael O'Neil

CoRR, 2014

The Inverse Fast Multipole Method.

Sivaram Ambikasaran, Eric Darve

CoRR, 2014

2013

An O (N log N) Fast Direct Solver for Partial Hierarchically Semi-Separable Matrices - With Application to Radial Basis Function Interpolation.

Sivaram Ambikasaran, Eric Darve

J. Sci. Comput., 2013