Andrew Valentine
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apvalentine.bsky.social
Andrew Valentine
@apvalentine.bsky.social
62 followers 39 following 7 posts
Assoc. Prof., Durham University
Inverse theory, ML, seismology, geophysics & computation.
https://valentineap.github.io/
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apvalentine.bsky.social
🧪 Monte Carlo methods can help characterise unknown parameters within a physical model. But what if we have multiple competing physical theories? Trans-conceptual sampling may be the answer...

Just out in JGR, w/M. Sambridge & J. Hauser: doi.org/10.1029/2024...

@durhamearthsci.bsky.social

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An illustration of three classes of ensemble representing an Earth model whose properties only vary with depth. The fixed-dimensional ensemble shows three Earth models each with three layers, whose thicknesses and seismic velocities all vary. The trans-dimensional ensemble is similar but with variable numbers of layers. In contrast, the trans-conceptual ensemble allows Earth models to have variable character as well. The first containing a single linear gradient, the second multiple layers and an inclined fault, while the third has undulating layers. Each ensemble class is a subset of those to its right. Fig 1 from Sambridge, Valentine & Hauser, 2025, JGR.
August 27, 2025 at 12:59 PM
apvalentine.bsky.social
Very flattered by this invitation to deliver the 2025
@royalastrosoc.bsky.social
Harold Jeffreys lecture - in honour of a
Durham University alumnus who made seminal contributions to geophysics and probability theory, and who also happens to be my great-great-grand-PhD-advisor! 🧪
durhamearthsci.bsky.social Department of Earth Sciences at Durham University, UK @durhamearthsci.bsky.social · Jan 13
Many congratulations to our Andrew Valentine (@apvalentine.bsky.social) on the award of the Royal Astronomical Society's Harold Jefferys Lectureship! A wonderful and well-deserved achievement!
#RASAwards2025
royalastrosoc.bsky.social Royal Astronomical Society @royalastrosoc.bsky.social · Jan 10
The Harold Jeffreys Lectureship is awarded to Dr Andrew Valentine, of Durham University, "for his ability to give a thought-provoking exposition about his own research into machine-learning methods in geophysics".

Well done Dr Valentine! 🎉

#RASAwards2025
January 13, 2025 at 4:53 PM
Reposted by Andrew Valentine
durhamearthsci.bsky.social
@durhamearthsci.bsky.social staff and students build the world. Expect to see the result at open days and beyond!
November 4, 2024 at 9:52 AM
apvalentine.bsky.social
TWO!! preprints out today from our work on #Bayesian inference:

1. Matthias Scheiter's #PhD research: #AI-enhanced McMC - essopenarchive.org/users/841077...

2. New paradigm: 'Trans-conceptual sampling' w/
M.Sambridge & J.Hauser - essopenarchive.org/users/841079...

@durhamearthsci.bsky.social
a cat wearing a pair of glasses with the words talk data to me above it
ALT: a cat wearing a pair of glasses with the words talk data to me above it
media.tenor.com
October 10, 2024 at 3:49 PM