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SDE tests failing with complex inputs #422
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The order should definitely be real. I suspect the answer isn't "just take the absolute part", though. FWIW the "strong order" of an SDE method is basically just the exact same thing as the "order" of an ODE method. (The "strong" is mreaning the order is measuring with a fixed choice of Brownian input, rather than any kind of probabilistic thing going on.) |
Hi! I think you just need to add a Line 103 in 80d1f34
If that doesn't work, I can take a closer look. |
That fixed part of the tests, but one is still failing:
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Great to see the others passed!! |
Hmm, I fixed Milstein, but it looks like there are additional failures for SRK, specifically with additive noise. Most likely some |
There are some tests for SDEs failing when adding complex inputs
Note that not all instances of this test are failing, so the problem is likely in the specific solvers.
I'd love to look into it, but I'm not an expert on stochastic SDEs, and some guidance would be appreciated. Specifically, are there any "usual suspects" regarding what could go wrong? Is there a toy example worth starting from?
Also, can the order be complex or is it itself a problem? If it is, should we take the abs or the real part for comparison?
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