Timeline for Simultaneous nonlinear fitting of two datasets to two trial functions with shared parameters
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
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| Jul 27, 2022 at 20:55 | comment | added | JimB | Not knowing the physics, I just tried separating the starting values of $\phi$dot1 and $phi$dot2 by a bit and hoped for the best. The only "1's" left are on the diagonal which just means the parameter estimators are perfectly correlated with themselves. | |
| Jul 27, 2022 at 10:49 | vote | accept | MOOSE | ||
| Jul 27, 2022 at 6:31 | comment | added | MOOSE | Thank you for this answer @JimB. ϕ1dot and ϕ2dot are supposed to capture a slow oscillation (precession) and fast oscillation (nutation) respectively. Could you briefly explain how you chose the initial values in the answer above? In the new correlation matrix I see several less ones than before, however there are some left. Do you still think the ansatz suffer from too many parameters? This post gained significantly more attention that I first anticipated, so I'm still digesting the load of good answers and comments i received. | |
| Jul 25, 2022 at 18:25 | history | answered | JimB | CC BY-SA 4.0 |