Christopher Rackauckas

icon indicating a website link www.chrisrackauckas.com icon indicating an email [email protected]

icon company Massachusetts Institute of Technology icon location Cambridge, MA icon location Applied Mathematics Instructor at MIT, researching numerical differential equations and their applications to scientific machine learning (SciML)

Results 4655 comments of Christopher Rackauckas

ManifoldCallback example with lower tolerances randomly fail to converge on v4

If you don't set the residual values to zero, then it's not guaranteed that the residual terms are zero. I don't see the issue there? Though in this case, you...

Please allow changing VectorContinuousCallback during affect! calls

> Perhaps I didn't understand but I'm not sure this will work. It seems to assume the size of the VectorContiniousCallback is the same size as the state vector which...

Please allow changing VectorContinuousCallback during affect! calls

> Is it then simply case of changing the len field. There is no `len` field in the caches actually constructed, the constructed arrays just know the size and that's...

Please allow changing VectorContinuousCallback during affect! calls

Okay yeah then we should update that as well.

Adding dual_ftol_rel keyword for NLopt

Yes we should definitely add support for this, just need to get around to it.

Complex boundary conditions

Yes it's not currently supported.

Switch from AbstractDifferentiation to DifferentiationInterface?

Yes please

Switch from AbstractDifferentiation to DifferentiationInterface?

Yes it needs love.

Don't use prev_theta for non-adaptive solves

This will need a test.

Don't use prev_theta for non-adaptive solves

Can we kick out an anonymized form of the model that's being tested with? ODEProblemExpr and then obfuscate variable names? Or `modelingtoolkitize` it then ODEProblemExpr?