Help with Bayesian model

[gabriele]

Dear all,

I am encountering a problem when modelling the set of dates with different phases (please see the attached file). The Bayesian model works well when running the same set of dates with only two phases.

Thank you for the help in advance.

Gabriele

[Richard Staff]

Hi Gabriele,

It looks to me like you just need to invert the order of your Phases - i.e., Unit 6 > Unit 5 > Unit 4 > Unit 3 > Unit 2 > Unit 1.

At the moment you have constrained that Unit 1 is the oldest and Unit 6 is the youngest, and hence the model output shows the modelled ages for Units 1 and 2 to be forced older than Units 3-6, which gives you your apparent divergence between the unmodelled and modelled distributions.

All the best,

Richard 🙂

Dr Richard Staff
Research Fellow in Quaternary Geochronology
Scottish Universities Environmental Research Centre (SUERC)
University of Glasgow
Tel.: +44 (0)1355 270198

     

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From: ox...@googlegroups.com <ox...@googlegroups.com> on behalf of gabriele <gabriele...@gmail.com>
Sent: 01 March 2022 16:11
To: OxCal <ox...@googlegroups.com>
Subject: Help with Bayesian model

 

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[gabriele]

Dear Richard,

thank you very much indeed, it's working!

All the best,

Gabriele