Dear Jacqueline Yes it could be for instance for ancestral state reconstruction. What I am thinking about is whether anybody has done a simulation study where they simulate shape data, procrustes align the data, infer some quantity of interest (could be ancestral state, or something else) and then look at how the estimated quantity compares to the true quantity (the one used for simulation) with or without procrustes alignment. I would expect procrustes alignment to have an effect as it is not really a part of any of the stochastic models I am aware of.
I am sorry if my question is very odd, I do not have a strong background in geometric morphometrics so I might have misunderstood something. Thank you! Best regards, Sofia > On 9 Sep 2025, at 03.45, Jacqueline Silviria <[email protected]> wrote: > > Just to be clear, by parameter estimation for stochastic models, you mean for > the purpose of ancestral state reconstruction? > > Jacqueline S. Silviria > she/her/hers > The Last King of the Jungle <https://discord.gg/m7KKkuKW> > > Department of Earth & Space Science > University of Washington > Seattle, WA, USA > [email protected] <mailto:[email protected]>, [email protected] > <mailto:[email protected]> > > ResearchGate profile <https://www.researchgate.net/profile/J_Silviria> > > Sent from my iPhone > >> On Sep 8, 2025, at 6:02 AM, Sofia Stroustrup <[email protected]> wrote: >> >> Dear all, >> >> I am wondering whether any of you are aware of a study that investigates the >> effect of Procrustes alignment on parameter estimation for instance under a >> Brownian motion or Ornstein-Uhlenbeck process? What I am thinking about is, >> if we simulate data under a stochastic model, procrustes align the data and >> then do parameter estimation how does Procrustes alignment affect the >> estimates. I have not been able to find any study investigating this. >> >> Thank you very much for your help! >> >> Best regards, >> Sofia >> (PhD student at University of Copenhagen) >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Morphmet" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] >> <mailto:[email protected]>. >> To view this discussion visit >> https://groups.google.com/d/msgid/morphmet2/695dcdb1-5844-420f-82ce-881a6ffe81f2n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/morphmet2/695dcdb1-5844-420f-82ce-881a6ffe81f2n%40googlegroups.com?utm_medium=email&utm_source=footer>. > -- You received this message because you are subscribed to the Google Groups "Morphmet" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/morphmet2/7F159313-FA85-45F7-93E6-611EBD78DADF%40gmail.com.
