Necessary Conditions and Tight Two-level Convergence Bounds for Parareal and Multigrid Reduction in Time.
Ben S. SouthworthPublished in: SIAM J. Matrix Anal. Appl. (2019)
Keyphrases
- lower bound
- upper bound
- worst case
- initial conditions
- multiresolution
- image analysis
- generalization error bounds
- multiscale
- sufficient conditions
- lower and upper bounds
- rates of convergence
- finite sample
- upper and lower bounds
- convergence speed
- convergence rate
- faster convergence
- linear complementarity problem
- asymptotic optimality
- image segmentation
- genetic algorithm
- lipschitz continuity
- sparse linear
- image restoration
- average case
- coarse to fine
- partial differential equations
- real time
- denoising
- cost function
- image sequences
- computer vision
- machine learning
- neural network