Comments (2)
arbenede
commented on August 30, 2024
I made a few more tests:
- I run the same problem with the MATLAB code by Cousins and Vempala, obtaining a very similar value for the volume (0.0204) (???)
- I ran vol only on the base of the prism, getting as expected the same value (height=1)
- I ran vol in sampling mode on the base of the prism and verified that it is sampling correctly (at least in this 2D subproblem)
- I have re-scaled all the coordinates (this is easy to do since the base of the prism is the Voronoi cell of a lattice centered at the origin and the prism extends symmetrically in the Z dimension). The estimated volumes scales expected but the result is still off by a factor of 2.
It looks like sampling is working, so maybe there is some problem with the rounding/sandwiching steps of the algorithms?
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vissarion
commented on August 30, 2024
You probably computed the exact volume incorrectly or you have some typo in you input file. Using vinci with your ine file I computed 2.037424855427e-02 with is pretty close to the numbers you computed above with our package. So if you agree I am closing the issue.
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Related Issues (20)
- Volesti 1.1.4 installation error
- Wrong volume computation HOT 1
- some logconcave examples are not working with MKL HOT 10
- Invalid output when sampling from hpolytope HOT 3
- Segfault sampling from HPolytope in R HOT 4
- Bug with doctest v.1.2.9 on Ubuntu 22.04
- Sampling polytopes with constraints in equality form HOT 2
- Set random seed in MC integration HOT 7
- Change to new cran checks badge URL HOT 2
- Convex polytopes defined by equality constraints return wrong results HOT 2
- Error on Compilation HOT 15
- Discrepancy between HMC output in R and C++ HOT 6
- Examples in optimization_spectrahedra do not compile HOT 2
- Questions about the Billard Walk Implementation HOT 2
- fatal error: 'minimum_ellipsoid/khach.h' file not found HOT 7
- Error is generated while trying to run Volesti in RStudio of Win11 HOT 7
- R interface returns NaN for volume computation HOT 3
- Replace volesti4dingo with develop
- macos/ARM/clang compile errors HOT 1
- Max inscribed ellipsoid segfault when given 2d polytope
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