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I've already started a branch:
```
feature/corr-cholesky-type
```
and what remains is:
- [ ] change underlying unconstrained params to (N choose 2)
- [ ] write the transforms in prob/transform.hpp
…
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Maybe we should change `sqrtm` so that it always returns a complex array?
```
julia> X = sqrtm([1.0 -0.9; -0.9 1.0])
2x2 Float64 Array:
0.847316 -0.531089
-0.531089 0.847316
julia> X * X
2x2 F…
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I couldn't find a test for the determinant. Maybe this is because its reverse mode is not implemented? I see some pdfs on the internet where the algopy determinant has been tested in the past.
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```
h[1] >>> var('A B', commutative=0)
(A, B)
In master this used to fail because it didn't return after failing with the commutative part:
h[2] >>> (a*A).subs(a*a*A,B)
a*A
This used to …
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It appears that test/linalg.jl samples small random matrices and vectors for the tests, but it uses the same test data for the real and complex versions of the test. Thus it seems that no operations o…
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Has anyone ever built an optimizer to find the maximum likelihood reversible transition matrix with strictly nonnegative eigenvalues from equilibrium transition counts ? The standard MLE transmat only…
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As detailed in #14885, it is not healthy for code to rely on the `__mul__` operation on permutations, since this operation depends on the `Permutations().global_options()['mul']` variable which can …
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Mostly so that I have a record of the problem - I have experienced intermittent segfaults when solving positive-definite sparse systems using `cholfact` which calls CHOLMOD functions through the code …
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_Original ticket http://projects.scipy.org/scipy/ticket/704 on 2008-07-19 by trac user emanuele, assigned to unknown._
scipy.linalg.cho_factor implements Cholesky decomposition. But cho_factor does n…
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We need to decide if we will compute the inverse of the inertial matrix used in the simulation within the actual physics simulation or if we will just compute it a priori and load it. The inertial mat…