Tim Rogers

Dynamics, machine learning, and Bayesian statistics in the Dynamics Research Group at Sheffield.

[Tim Rogers @drgTim]

Super happy to be working with @ADvulab and Keith Worden on this very exciting topic.

[Alice Cicirello @ DVU group @ADvulab]

New affiliated member of the #dvugroup: Oliver Preston!

Oliver has just started his PhD at the Uni of Sheffield to develop #machinelearning methods to understand and visualise the performance of #nonlinearstructures to avoid #failures

https://t.co/7otL7oXBbp

#ML #SHM

[Tim Rogers @drgTim]

What if you could treat nonlinear system ID as a linear input-state-parameter problem?

Find out in this work just published in MSSP... We use GP latent force models in a modern reimagining of the restoring force surface method to do just that.

https://t.co/nQeuTkhnlu

[Tim Rogers @drgTim]

Super happy to be able to share: A sampling-based approach for information-theoretic inspection management. My first in Proceedings of the Royal Society A and it's some lovely work with @lwrncebull on active learning Dirichlet processes for SHM.

https://t.co/yuD4AtJMHa

[Tim Rogers @drgTim]

This is going to be a fantastic project. Really happy to be involved.

[Tim Rogers @drgTim]

I'm looking for a postdoc to join me working on ML and Bayesian stuff for system ID in structural dynamics. I can vouch that the DRG and @SheffMechEng is a great place to work. Check out the job advert in link below.

https://t.co/LVfBH9MV79

[Tim Rogers @drgTim]

@WillFurnass Thanks @WillFurnass happy to share code if you're interested in the finer details.

[Tim Rogers @drgTim]

Talking about something a bit different tomorrow, how we got SMC running in parallel in #MATLAB. I promise it will be light on the maths!

[RSE@Sheffield @RSE_Sheffield]

Tomorrow lunchtime we'll be holding a #lunchbytes on Better #MATLAB, Better Research featuring talks from Fred Sonnenwald and @drgTim
from Sheffield and @walkingrandomly from @MathWorks https://t.co/qzzRlxlrl1

[Tim Rogers @drgTim]

Now available in MSSP, this lovely work by @mattrjones11 (me, Keith Worden and @lizzyintheDRG) for localising acoustic emission sources in structures with complex geometry. You can find it here: https://t.co/O4rpKhYXEA

[Tim Rogers @drgTim]

Working in the DRG is great fun and @arturgower is doing some hard but super cool stuff. I'd you're looking for a post doc check it out.

[Artur L Gower @arturgower]

#postdoc on mathematics or numerics of wave scattering in random materials to work with me! Happy to consider candidates with experience in either #acoustics, elastic waves, #ultrasonics, or electromagnetic waves.

https://t.co/pofm3VBEV1

[Tim Rogers @drgTim]

Predicting wave loads on offshore structures was one of the first things I worked on in my PhD. Dan's latest work with Ulf, @lizzyintheDRG and I shows one nice approach using Gaussian process NARX as a grey-box model. You can read it here: https://t.co/FriYxOkYau

[Tim Rogers @drgTim]

Very pleased that our paper on Probabilistic Inference For SHM has been featured in the Editor's Choice section for @asceasmejrues. You can read it here: https://t.co/jq1fJDuBuq
also available at https://t.co/8g2ijXReiy

[Tim Rogers @drgTim]

This wins the award for most beautiful results figures from any paper I have been involved it. It's also fantastic work from @mattrjones11 on damage localisation with GPs.

[Matt Jones @mattrjones11]

Our latest paper is available on arXiv! We look at developing a probabilistic framework for localising acoustic emission events in complex structures using Gaussian processes. Find it here: https://t.co/nvGOOJYB8D

[Tim Rogers @drgTim]

And here is a nice picture from the paper of inferring that model discrepancy...

[Tim Rogers @drgTim]

Really good to see this work with Paul Gardner and others in the DRG published in MSSP. We introduce a novel importance sampling based scheme for inferring model discrepancy. https://t.co/eSoS65nLXa

[Matt Jones @mattrjones11]

Really excited for the grey-box day of the annual DRG workshop that's happening today. You can catch @lizzyintheDRG, @drgTim and lots of other interesting speakers talking about their work on physics-informed machine learning for problems in structural health monitoring.

[Tim Rogers @drgTim]

This is going to be a great few days. You can catch me speaking tomorrow afternoon.

[DigiTwin Project @DigiTwin_EPSRC]

Registration closes at 12pm for the 3rd Sheffield Workshop on #structuraldynamics @DigiTwin_EPSRC PI David Wagg will be delivering a talk on Digital Twins on Thursday 10th December. To register - https://t.co/cTsFVlf6Po #EPSRC #digitwin #digitaltwin #sheffieldDRG

[Tim Rogers @drgTim]

Really exciting results coming soon. We are seeing huge speed up compared to batch Gibbs solutions by moving to an SMC scheme tailored for solutions to linear dynamic systems.

[Tim Rogers @drgTim]

As well as lots of great work being shown at #ISMAUSD our paper on input-state estimation in nonlinear systems has also been published today. You can now find it here: https://t.co/DrgzTCvgWv it was very exciting to see Particle Gibbs performing so well.

[Tim Rogers @drgTim]

It was great to work with Konstantinos Tatis, Vasilis Dertimanis and @Lne_Chatzi from @ETH_en along with @lizzyintheDRG and Keith Worden from Sheffield on spatiotemporal input-state estimation to be presented at #ISMAUSD

[Eleni Chatzi @Lne_Chatzi]

Interested in knowing more on what we do? You‘ll find a great summary at this year‘s ISMA conference:

- Parametric #nonlinear ROMs with Konstantinos Vlachas, Adam Brink, Agathos K. & Tatsis K.

- #metamaterials for Vibration Abs…https://t.co/uG736O0ycr https://t.co/hKEq1R06r8

[Tim Rogers @drgTim]

If you are attending, I will be taking questions in NL1: Non-linearities: identification and modelling, starting at 13:45 CEST.

[Tim Rogers @drgTim]

Virtual #ISMA2020 starts today, I will be presenting some great work by Tobias Friis on recovering unknown nonlinearities using Gaussian Process Latent Force Models.