SyneRBI / SIRF / 9115150134

74%

push

github

Computing Hessian products with image data objects and related stuff (#1253)

* implemented prior.accumulate_Hessian_times_input()

* implemented return of Hessian*x via out= in Prior

* implemented ObjectiveFunction.accumulate_Hessian_times_input (not tested)

* implemented set_time_interval for listmode objective function (not tested)

* used auto and corrected inheritance of listmode objective function in Python

* fixed typo in listmode objective function class in STIR.py

* use references in Hessian

Also use auto more

* added set_subsensitivity_filenames method to listmode objective function

* implemented multiply_with_Hessian, checked by simple regression test

see osem_reconstruction.py for a simple regression test for
the Hessian multiplication

* attended to Codacy issue

* added objective function method that checks that grad(x+dx)-grad(x)~H(x)dx

* attended to Codacy issues

* resolved reviewer's issues

* updated Hessian multiplication for priors

* corrected Prior.multiply_with_Hessian()

* add test on Hessian to CI

* add test for Hessian of prior

also remove test_Hessian from the objective function

* attended to Codacy issues

* updated CHANGES.md

---------

Co-authored-by: Kris Thielemans <k.thielemans@ucl.ac.uk>

0 of 28 new or added lines in 1 file covered. (0.0%)

0 of 3704 relevant lines covered (0.0%)

0.0 hits per line