Postdoc in AI & BCI @_NeuroRestore | PhD in AI-Neuroimaging đź§  @lab_metrics @KingsImaging | CS Engineer & AI Scientist | @imperialcollege, @telecomparis

Joined September 2010
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[1/5] I'm very happy to share that our latest paper: “SIM: Surface-based fMRI Analysis for Inter-Subject Multimodal Decoding from Movie-Watching Experiments”, has been accepted to #ICLR2025! 🎉
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Dahan Simon retweeted
Doing a demo on evaluating small language models for non-reasoning tasks (e.g. professionalize, shorten) at the amazon booth at 14:00 tomorrow at #ICLR 🇸🇬
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[1/5] I'm very happy to share that our latest paper: “SIM: Surface-based fMRI Analysis for Inter-Subject Multimodal Decoding from Movie-Watching Experiments”, has been accepted to #ICLR2025! 🎉
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[2/5] This work has been the latest research project of my PhD, by far the most interesting and a fantastic collaboration between great AI and Neuroimaging researchers @le__gab @emrobSci @lzjwilliams @GuoYourong @DanielRueckert and Rob Leech! openreview.net/pdf?id=OJsMGs…

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Dahan Simon retweeted
11 Jul 2024
A biologically-implausible model of the formation sulci and gyri across the human cerebral cortical mantle.
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🤣
R2: While the results are impressive, this is a simple combination of diffusion transformer (ICCV 2023) and latent diffusion model (CVPR 2022). Limited novelty. Weak reject.
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Dahan Simon retweeted
We could have AGI but our learning rates are off by 1e-15.
Have you ever done a dense grid search over neural network hyperparameters? Like a *really dense* grid search? It looks like this (!!). Blueish colors correspond to hyperparameters for which training converges, redish colors to hyperparameters for which training diverges.
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Very exciting 🇫🇷
MeTriCS lab is excited about this one. Paris here we come 🤞!!
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Dahan Simon retweeted
MIDL is going to Paris - and hopefully you do the same! The Call for Papers is now online! See 2024.midl.io for details.
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3 years ago, I was lucky enough to travel to Israel 🇮🇱 for the first time. My primary takeaway: if you think the Middle East is a black-and-white issue, you couldn't be more wrong. If you think it's complicated, it's more complicated than you could imagine. There's been plenty of talk about the war and the atrocities that have been committed. If you know me personally, you know my views on this issue are quite clear. But I'm not here to talk about that right now. My first day in Israel was quite unexpected, mostly (at first) because it rained. Believe it or not, it rains in the desert, and that completely threw off our itinerary. While our guides were figuring out a backup plan for the rain, we met our tour mates. They, surprisingly enough, were IDF soldiers that were on leave, and would be joining us for the whole trip. Despite my pro-Israel stance, I'm a generally skeptical person and immediately assumed I was going to be propagandized to death the whole trip. And, even if they weren't sent there to indoctrinate us, I assumed they'd at least be pretty biased. Even if I generally support their side of the equation, I don't like being lied to. But they were quite nice, so I went along with it for the time being. Our first destination, due to last second changes in plan from our original outdoors activities, was the Yitzhak Rabin Center, where we were to meet up with our tour mates. Rabin became an early Prime Minister of Israel after fighting in the wars of 1948. He was ultimately assassinated. What a great place to start the indoctrination, right? A memorial to a guy who is famous for fighting in the OG wars that got this country on its first legs. Walking between exhibits with a couple of the soldiers, we finally came across some information about the ongoing treatment of Palestinians in Israel. To be honest, it's really hard to get good information on this outside of seeing it for yourself, so with genuine curiousity (and a bit of hesitation in anticipation of a fiery response), I asked them about it. I firmly expected to get an answer approximating "yeah fuck 'em, they hate us." I couldn't have been more wrong. Might I remind you, Israel has mandatory conscription because pretty much every country neighboring them wants to wipe them off the face of the planet. And, among those conscripted soldiers, there was a lucky few sent to hang out with American tourists. So why wouldn't they send ones with the "right" opinions? And their response? It was filled with genuine heartache. They expressed deeply complicated feelings about the settlements (which they had actually seen, unlike most who shout vitriolic opinions). They hated the idea that their military activity caused any amount of distress to any ordinary Palestinians, whether those people wished Israelis death or not. Of course, they all hated Hamas, who obviously was the one pitting them against each other. Thank goodness this was the first day of the trip, because it opened my eyes for the rest of it. This conversation was an ongoing one throughout the whole trip. They never shied away from it. And they were always willing to play devil's advocate, steelmanning the best opinions from each side. After several days of exploring Israel, eating a ton of amazing food, meeting a ton of amazing people, and seeing a ton of amazing sights, we ended up near the border of the West Bank on the last full day of the trip, where we had similarly complicated, unfulfilling, yet enlightening conversations. In the days to come, whenever you hear the loudest, most radical voices from both sides shouting terrible things, remember that many of the actual people on the ground are humans with nuanced, compassionate voices. You won't hear that in the news, and you won't see it in the videos on Twitter that show each side trying to blast the other into oblivion. Most of the individuals that were senselessly murdered on the first day probably held pretty similar opinions. This is probably a little rambly, and I don't have much of a takeaway other than this: Think of the individuals in Gaza who just want to live a normal life. And think of individuals in Israel who want them to live that normal life.
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Truly inspiring work!
Our new study is out today in Nature! We demonstrate a brain-computer interface that turns speech-related neural activity into text, enabling a person with paralysis to communicate at 62 words per minute - 3.4 times faster than prior work. 1/3 nature.com/articles/s41586-0…
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Another great work from @GuoYourong and @lab_metrics presented at OHBM2023 🎉
At this year's @OHBM I will be presenting "Uncovering common variants of cortical folding through hierarchical surface registration". Come check out at poster number 671, poster session 1 & 2 đź§µ 1/7
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Great work led by @lzjwilliams extending the HCP cortical parcellation to UK Biobank. Presented at @OHBM in the coming days ✌🏻🇨🇦
I decided to go with a #Barbie theme for my @OHBM poster. I’ll be presenting “Individualised multimodal cortical parcellations in UK Biobank.” The poster only scratches the surface, so anyone interested should drop by poster sessions 1 and 2, number 1001. A quick thread 🧵1/14
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