Amos S. Lawless

According to our database, Amos S. Lawless authored at least 10 papers between 2007 and 2025.

Collaborative distances:

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

2025

An Introduction to Solving the Least-Squares Problem in Variational Data Assimilation.

Ieva Dauzickaite, M. A. Freitag, Selime Gürol, Amos S. Lawless, A. Ramage, Jennifer A. Scott, Jemima M. Tabeart

CoRR, June, 2025

2024

Conditioning of hybrid variational data assimilation.

Shaerdan Shataer, Amos S. Lawless, Nancy K. Nichols

Numer. Linear Algebra Appl., March, 2024

2022

New bounds on the condition number of the Hessian of the preconditioned variational data assimilation problem.

Jemima M. Tabeart, Sarah L. Dance, Amos S. Lawless, Nancy K. Nichols, Joanne A. Waller

Numer. Linear Algebra Appl., 2022

2021

Nonlinear Conditional Model Bias Estimation for Data Assimilation.

Jason A. Otkin, Roland W. E. Potthast, Amos S. Lawless

SIAM J. Appl. Dyn. Syst., 2021

On preconditioning the state formulation of incremental weak constraint 4D-Var.

Ieva Dauzickaite, Amos S. Lawless, Jennifer A. Scott, Peter Jan van Leeuwen

CoRR, 2021

Randomised preconditioning for the forcing formulation of weak constraint 4D-Var.

Ieva Dauzickaite, Amos S. Lawless, Jennifer A. Scott, Peter Jan van Leeuwen

CoRR, 2021

2020

Spectral estimates for saddle point matrices arising in weak constraint four-dimensional variational data assimilation.

Ieva Dauzickaite, Amos S. Lawless, Jennifer A. Scott, Peter Jan van Leeuwen

Numer. Linear Algebra Appl., 2020

The conditioning of least squares problems in preconditioned variational data assimilation.

Jemima M. Tabeart, Sarah L. Dance, Amos S. Lawless, Nancy K. Nichols, Joanne A. Waller

CoRR, 2020

2018

The conditioning of least-squares problems in variational data assimilation.

Jemima M. Tabeart, Sarah L. Dance, Stephen A. Haben, Amos S. Lawless, Nancy K. Nichols, Joanne A. Waller

Numer. Linear Algebra Appl., 2018

2007

Approximate Gauss-Newton Methods for Nonlinear Least Squares Problems.

Serge Gratton, Amos S. Lawless, Nancy K. Nichols

SIAM J. Optim., 2007