Publications

22 Sep 2020

Approximate Inverse Chain Preconditioner: Iteration Count Case Study for Spectral Support Solvers

M. Harper Langston, Pierre-Dav | +5 More
Source: High Performance Extreme Computing Conference (HPEC) 2020
As the growing availability of computational power slows, there has been an increasing reliance on algorithmic advances. However, faster algorithms…
Algorithms Langston Lethin Letourneau Team Wei Weintraub
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8 Jun 2020

On the Bottleneck Structure of Congestion-Controlled Networks

Jordi Ros-Giralt, Sruthi Yella | +5 More
Source: ACM SIGMETRICS 2020, Boston MA; Proc. ACM Meas. Anal. Com...
In this paper, we introduce the Theory of Bottleneck Ordering, a mathematical framework that reveals the bottleneck structure of data…
Algorithms Langston Lethin Networking Ros-Giralt Team Yellamraju
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5 May 2020

Low-Frequency Electromagnetic Imaging Using Sensitivity Functions and Beamforming

Pierre-David Letourneau, Mitch | +5 More
Source: Society for Industrial and Applied Mathematics (SIAM) Jou...
We present a computational technique for low-frequency electromagnetic imaging in inhomogeneous media that provides superior three-dimensional resolution over existing techniques.…
Algorithms Langston Letourneau Signal Processing Team
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5 Nov 2019

Systems and Methods for Efficient Targeting

Muthu M. Baskaran, Thomas Henr | +5 More
Source: Patent US10466349B2
A system for determining the physical path of an object can map several candidate paths to a suitable path space…
Algorithms Baskaran Langston Lethin Meister Patents Team
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24 Sep 2019

Fast Large-Scale Algorithm for Electromagnetic Wave Propagation in 3D Media

Mitchell Tong Harris, M. Harpe | +5 More
Source: IEEE High Performance Extreme Computing Conference (HPEC)...
We present a fast, large-scale algorithm for the simulation of electromagnetic waves (Maxwell’s equations) in three-dimensional inhomogeneous media. The algorithm…
Algorithms Ezick Langston Lethin Letourneau Signal Processing Team
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24 Sep 2019

Combinatorial Multigrid: Advanced Preconditioners For Ill-Conditioned Linear Systems

M. Harper Langston, Mitchell T | +5 More
Source: IEEE High Performance Extreme Computing Conference (HPEC)...
The Combinatorial Multigrid (CMG) technique is a practical and adaptable solver and combinatorial preconditioner for solving certain classes of large,…
Algorithms Ezick Langston Lethin Letourneau Team
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4 Jun 2019

Systems and Methods for Multiresolution Parsing

Jordi Ros-Giralt, Alan Commike | +5 More
Source: Patent US10313361B2
A multiresolution parser (MRP) can selectively extract one or more information units from a dataset based on the available processing…
Algorithms Lethin Networking Patents Ros-Giralt Team
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23 May 2019

On the Bottleneck Structure of Positive Linear Programming

Jordi Ros-Giralt, Harper Langs | +5 More
Source: 2019 SIAM Workshop on Network Science
Positive linear programming (PLP), also known as packing and covering linear programs, is an important class of problems frequently found…
Algorithms Langston Lethin Networking Ros-Giralt Team
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9 Oct 2018

Systems and Methods for Communication Using Sparsity Based Pre-Compensation

Pierre-David Letourneau
Source: Patent US10097280B2
A signal pre-compensation system analyzes one or more properties of a communication medium and, taking advantage of the locality of…
Algorithms Letourneau Patents Signal Processing Team
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