Jed Homer

Cosmology and Machine Learning @ ORIGINS Data Science Lab, PhD from @LMU_Muenchen and @MunichCenterML.

Love to paint pictures and climb rocks.

[Jed Homer @JedHomer]

Very happy to publish this work with Oliver Friedrich (USM/LMU/MCML) and Daniel Gruen (USM/LMU/MCML)!

Simulation-based inference has its own Dodelson-Schneider effect (but it knows that it does)

https://t.co/z5yl3fvOzw

🧵[1 / n]

[Jed Homer @JedHomer]

@nicolasvelezb Simulation-based inference is a key use case of generative models that have exact likelihoods. The claim is that we can write down the likelihood of the data without a theoretical model built from first principles. It's not that simple however: https://t.co/58dPiAQQt3

[Jed Homer @JedHomer]

More stochastic interpolants

[Jed Homer @JedHomer]

Using stochastic interpolants to warp one distribution to another.

[Jed Homer @JedHomer]

@zhaisf Quick question because I plan to use this on a project (it's good to have reliable likelihoods again)

What exactly is the key/value caching doing? Is it simply propagating the k, v caches through the flow between the attention blocks? They're updated per datapoint right? Thanks!

[Jed Homer @JedHomer]

Check it out at

https://t.co/z5yl3fvgJY

...with all results derived using my code:

https://t.co/SDGeWlIP7F

Enjoy!

6

[Jed Homer @JedHomer]

Very happy to publish this work with Oliver Friedrich (USM/LMU/MCML) and Daniel Gruen (USM/LMU/MCML)!

Simulation-based inference has its own Dodelson-Schneider effect (but it knows that it does)

https://t.co/z5yl3fvOzw

🧵[1 / n]

[Jed Homer @JedHomer]

Here we show SBI posteriors derived with a linear compression (pink, parameterised by a simulation-estimated covariance) and a NN compression (yellow) with a Gaussian likelihood analysis (green).

Note this is only in one universe - the data and widths will scatter!

5

[Jed Homer @JedHomer]

@cgarciae88 which is which? have found FM to be quite noisy so interested in how this could be fixed!

[Jed Homer @JedHomer]

@prof_g Incredible work!

[Jed Homer @JedHomer]

@pidstrigach This is an excellent read thank you!

[Jed Homer @JedHomer]

@alemi @dpkingma @poolio Much appreciated, was just reading this today!

[Jed Homer @JedHomer]

@AugustLamm You see a LOT more in artist's drawings than anything else, so it's hard not to search for them, who else is in the ink cult favourites? Find the Zorn drawing featuring a sea... Unbelievable skill

[Jed Homer @JedHomer]

@AugustLamm Yeah his drawings are my favourite tbh, see Anders Zorn's drawings too, his chaotic hatching is mind blowing! What's the ISBN of this book?

[Jed Homer @JedHomer]

@AugustLamm Cool, reminds me a bit of 'Fountain in the Garden of Hospital', Van Gogh

[Jed Homer @JedHomer]

@AugustLamm So nice! Are these ink on paper?

[Jed Homer @JedHomer]

@Rob_Pointon Incredible work!