Papers

• Can you use MINRES with an indefinite preconditioner?

  T Rees; NIM Gould; D Orban;

  Type: Presentation

• On the evaluation complexity of constrained nonlinear least-squares and general constrained nonlinear optimnization using second-order methods

  C Cartis; NIM Gould; PL Toint;

  Type: Report

  Published in: Rutherford Appleton Laboratory Preprints (- 2022)

• Projected Krylov methods for saddle-point systems

  NIM Gould; D Orban; T Rees;

  Type: Report

  Published in: Rutherford Appleton Laboratory Preprints (- 2022)

• On positive semidefinite modification schemes for incomplete Cholesky factorization

  JA Scott; M Tuma;

  Type: Report

  Published in: Rutherford Appleton Laboratory Preprints (- 2022)

• HSL_M128 : an efficient and robust limited-memory incomplete Cholesky factorization code

  JA Scott; M Tuma;

  Type: Report

  Published in: Rutherford Appleton Laboratory Preprints (- 2022)

• Preconditioners based on strong subgraphs

  IS Duff; K Kaya;

  Type: Report

  Published in: Rutherford Appleton Laboratory Preprints (- 2022)

• New Parallel Sparse Direct Solvers for Multicore Architectures

  J Hogg; J Scott;

  Type: Journal Article

  Published in: Algorithms

• The augmented block Cimmino distributed method

  IS Duff; R Guivarch; D Ruiz; M Zenadi;

  Type: Report

  Published in: Rutherford Appleton Laboratory Preprints (- 2022)

• Compressed threshold pivoting for sparse symmetric indefinite systems

  JD Hogg; JA Scott;

  Type: Report

  Published in: Rutherford Appleton Laboratory Preprints (- 2022)

• A filter method with unified step computation for nonlinear optimization

  NIM Gould; Y Loh; DP Robinson;

  Type: Report

  Published in: Rutherford Appleton Laboratory Preprints (- 2022)

• CUTEst : a constrained testing environment with safe threads

  NIM Gould; D Orban; PL Toint;

  Type: Report

  Published in: Rutherford Appleton Laboratory Technical Reports (- 2022)

• An example of slow convergence for Newton's method on a function with globally Lipschitz continuous Hessian

  C Cartis; NIM Gould; PL Toint;

  Type: Report

  Published in: Rutherford Appleton Laboratory Technical Reports (- 2022)

• Sparse Communication Avoiding Pivoting

  JD Hogg; JA Scott;

  Type: Presentation

• Projected Krylov methods for general saddle-point systems

  T Rees; N Gould; D Orban;

  Type: Presentation

• Iterative methods within optimization problems

  T Rees;

  Type: Presentation

• On positive semidefinite modification schemes for incomplete Cholesky factorization

  JA Scott; M Tuma;

  Type: Presentation

• A robust limited-memory incomplete Cholesky factorization

  JA Scott; M Tuma;

  Type: Presentation

• Disruptive Technologies

  IS Duff;

  Type: Presentation

• Partitioning strategies for the block Cimmino algorithm

  T Drummond; IS Duff; R Guivarch; D Ruiz; M Zenardi;

  Type: Report

  Published in: Rutherford Appleton Laboratory Preprints (- 2022)

• Pivoting strategies for tough sparse indefinite systems

  JD Hogg; JA Scott;

  Type: Journal Article

  Published in: ACM Transactions on Mathematical Software

• Optimal Weighted Matchings for Rank-Deficient Sparse Matrices

  JD Hogg; JA Scott;

  Type: Journal Article

  Published in: SIAM Journal on Matrix Analysis and Applications

• New robust limited-memory incomplete Cholesky preconditioners

  JA SCOTT; M Tuma;

  Type: Presentation

• New robust limited-memory incomplete Cholesky factorizations

  JA Scott; M Tuma;

  Type: Presentation

• On the Evaluation Complexity of Cubic Regularization Methods for Potentially Rank-Deficient Nonlinear Least-Squares Problems and Its Relevance to Constrained Nonlinear Optimization

  C Cartis; NIM Gould; PL Toint;

  Type: Journal Article

  Published in: SIAM Journal on Optimization

• Branching and bounding improvements for global optimization algorithms with Lipschitz continuity properties

  C Cartis; JM Fowkes; NIM Gould;

  Type: Report

  Published in: Rutherford Appleton Laboratory Preprints (- 2022)