Prior Hessian methods use second partial derivative functions #14
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
robbietuk
pushed a commit
that referenced
this pull request
Jun 22, 2021
* RDP/accumulate_Hessian_times_input * RDP accumulate_Hessian_times_input * Added RDP Hessian documentation * Add div by 0 safety * Add epsilon to Hessian function * Fix issue with logic * Make prior test method `test_gradient` * Adds test_Hessian method * Test an array of different cases for the Hessian condition * improve Hessian documentation and info * Improve dot product * Adds _is_convex variable to priors. default is false * Reimplementation add_multiplication_with_approximate_Hessian * Correct math in QP accumulate_Hessian_times_input * Improve QP comments * [ci skip] Add two methods to RDP class :(off_)diagonal_second_derivative Updates the math for the RDP * Prior Hessian methods use second partial derivative functions (#14) * RDP Documententation * QP use (off_)diagonal_second_derivative methods and documentation * Restructure RDP and QP Hessian logic * Improve RDP and QP documentation * Implement log cosh accumulate_Hessian_times_input in terms of derivatives * Documentation * compute_Hessian method to all priors and test improvements in general * Add method get_is_convex(), which accesses prior is_convex parameter and only test convexity of priors if convex function * compute_Hessian method added to generalised prior and errors by default but with different messages depending on is_convex * Test rename and create test_Hessian_convexity and test_Hessian_methods * Add test for compute_Hessian * RelativeDifferencePrior initialisation call set_defaults * Modernise `compute_Hessian` for QP and LogCosh. Add `compute_Hessian` for RDP * Correct RDP second derivative functions * Major changes to test_Hessian_against_numerical, which loops over each voxel for perturbation response * Add verbosity suppression to suppress gradient info calls * [ci skip] Add documentation to `test_gradient`
robbietuk
pushed a commit
that referenced
this pull request
Jun 27, 2022
* RDP Documententation * QP use (off_)diagonal_second_derivative methods and documentation * Restructure RDP and QP Hessian logic * Improve RDP and QP documentation * Implement log cosh accumulate_Hessian_times_input in terms of derivatives * Documentation
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
No description provided.