MIQR: A multilevel incomplete QR preconditioner for large sparse least-squares problems

Keyphrases

• Least Squares Problems 100%
• QR Factorization 100%
• Sparse Partial Least Squares 100%
• Sparsity 50%
• Sparse Matrices 50%
• Numerical Test 50%
• Number of Levels 50%
• Normal Equations 50%
• Incomplete Factorization 50%
• Multigrid Solver 50%
• Orthogonality 50%
• Dropping Strategies 50%
• Orthogonal Pattern 50%
• Level Matrix 50%

Mathematics

• Independent Set 100%
• Least Squares Method 100%
• Factorization 66%
• QR Factorization 66%
• Matrix 33%
• Sparse Matrix 33%
• Normal Equation 33%
• Orthogonality 33%

Engineering

• Least Square Problem 100%
• Recursive 50%
• Normal Equation 50%
• Sparsity 50%
• Good Level 50%
• Orthogonality 50%