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tmabraham

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Sophont announces $9.22M seed round to build multimodal models for healthcare

sophont.med
2 points·by tmabraham·10 miesięcy temu·0 comments

Sophont: Building open multimodal foundation models for the future of healthcare

sophontai.com
5 points·by tmabraham·w zeszłym roku·1 comments

Celebrating One Year of MedARC

stability.ai
1 points·by tmabraham·2 lata temu·0 comments

Scaling Rectified Flow Transformers for High-Resolution Image Synthesis [pdf]

stabilityai-public-packages.s3.us-west-2.amazonaws.com
2 points·by tmabraham·2 lata temu·0 comments

CheXagent: Towards a Foundation Model for Chest X-Ray Interpretation

stanford-aimi.github.io
1 points·by tmabraham·2 lata temu·0 comments

Evaluating the Medical Knowledge of Open LLMs

medarc.ai
2 points·by tmabraham·2 lata temu·0 comments

Evaluating the Medical Knowledge of Open Language Models

medarc.ai
3 points·by tmabraham·2 lata temu·0 comments

RLHF for Diffusion Models from Scratch

tanishq.ai
2 points·by tmabraham·3 lata temu·0 comments

Enhancing Diffusion Models with Reinforcement Learning

carper.ai
2 points·by tmabraham·3 lata temu·0 comments

DRLX: RLHF for Diffusion Models

github.com
2 points·by tmabraham·3 lata temu·0 comments

GPU Puzzles

github.com
2 points·by tmabraham·3 lata temu·0 comments

fMRI-to-image with contrastive learning and diffusion priors

stability.ai
146 points·by tmabraham·3 lata temu·64 comments

Talk to Claude 2

claude.ai
2 points·by tmabraham·3 lata temu·0 comments

fMRI-to-Image with Contrastive Learning and Diffusion Priors

stability.ai
1 points·by tmabraham·3 lata temu·0 comments

MindEye: fMRI-to-Image with Contrastive Learning and Diffusion Priors

medarc-ai.github.io
2 points·by tmabraham·3 lata temu·0 comments

State-of-the-art fMRI-image reconstruction (MindEye)

arxiv.org
3 points·by tmabraham·3 lata temu·0 comments

Mind’s Eye: fMRI-to-Image with Contrastive Learning and Diffusion Priors

medarc-ai.github.io
1 points·by tmabraham·3 lata temu·0 comments

Exploring the multimodal capabilities of GPT-4

twitter.com
3 points·by tmabraham·3 lata temu·0 comments

MedARC -Unlock new possibilities in medical AI research

medarc.ai
3 points·by tmabraham·3 lata temu·1 comments

Their Life and Work, with Jeremy Howard

podcast.fast.ai
1 points·by tmabraham·3 lata temu·0 comments

comments

tmabraham
·8 miesięcy temu·discuss
Sophont Inc. | Founding Research Engineer / Scientist | Remote | Full-time

Sophont is a public-benefit corporation building open multimodal foundation models for medicine. Joining Sophont means you are paid to lead and contribute to high-impact medical AI research ultimately aimed to transform healthcare and life sciences.

We are looking for exceptional, high-agency ML research engineers who are passionate about using AI to build the future of healthcare. No previous background in medical AI is needed!

If you’re interested in working on highly impactful AI projects that could have the potential to transform and save many lives, Sophont is the company to work at.

## Roles

Founding Research Engineer, LLM Team - https://sophont.med/job_postings/llm Founding Research Scientist, Vision Team - https://sophont.med/job_postings/vision Founding Research Scientist, Miscellaneous - https://sophont.med/job_postings/misc

How to apply:

Email resume to [email protected]
tmabraham
·w zeszłym roku·discuss
I'm the co-founder of Sophont, happy to answer any questions!
tmabraham
·w zeszłym roku·discuss
https://x.com/iScienceLuvr/status/1905144432791609480
tmabraham
·2 lata temu·discuss
it was already planned for open-sourcing, the leak did not affect the plans in any way
tmabraham
·2 lata temu·discuss
Nicolas Bourbaki is the name of a character in twenty one pilots' concept album

"He'll always try to stop me, that Nicolas Bourbaki He's got no friends close, but those who know him most know He goes by Nico"

It is indeed inspired by the actual pseudonym, not just a pun.
tmabraham
·2 lata temu·discuss
The paper has preliminary results for video as well
tmabraham
·3 lata temu·discuss
Because you can take advantage of pretrained CNNs and perform transfer learning, which is significantly more data-efficient than training from scratch, which is what you'd likely have to do with raw digital signals. This paper is not unique in this approach and many papers have obtained SOTA results by processing digital signals as images.
tmabraham
·3 lata temu·discuss
Yeah using data from a 7T MRI giving higher spatial resolution definitely helps!

The fMRI dataset includes signal from the whole brain but we only use the data from the visual cortex for this study.
tmabraham
·3 lata temu·discuss
Our model generates CLIP image embeddings from fMRI signals and those image embeddings can be used for retrieval (using cosine similarity for example) or passed into a pretrained diffusion model that takes in CLIP image embeddings and generates an image (it's a bit more complicated than that but that's the gist, read the blog post for more info).

So we are doing both reconstruction and retrieval.

The reconstruction achieves SOTA results. The retrieval demonstrates that the image embeddings contain fine-grained information, not just saying it's just a picture of a teddy bear and then the diffusion model just generates a random teddy bear picture.

I think the zebra example really highlights that. The image embedding generated matches the exact zebra image that was seen by the person. If the model only could say it's just a zebra picture, it wouldn't be able to do that. But the model is picking up on fine-grained info present in the fMRI signal.

The blog post has more information and the paper itself has even more information so please check it out! :)
tmabraham
·3 lata temu·discuss
Yes we've been looking into ControlNet as well, and I think there is one recent fMRI-to-image paper that also has tried ControlNet. Maybe we'll use ControlNet in MindEye v2 :)
tmabraham
·3 lata temu·discuss
We think it could be useful for clinical research and maybe even diagnostics. For example, you could imagine a person with depression(or other neurological disorders) may have a different perception of the same image than a healthy person. Now with the much higher fidelity that both more powerful MRI machines and better generative AI tools can provide, this may now be a very promising direction for future research.
tmabraham
·3 lata temu·discuss
I use GitHub Copilot very frequently for any programming I do.

I also use BingChat very often, I consider it to be a very underrated tool that people haven't fully explored. Of course, it's great for when you want your LLM queries augmented with search results. But BingChat can also view the current webpage, so for example you can pull up papers and ask BingChat questions about it. I've used it to help write abstracts for my papers. When I do this, BingChat literally searches up "how to write an abstract" which I found absolutely hilarious , it's like it's learning skills on the go as well. I didn't use the outputs directly, but it served as useful inspiration. I think BingChat uses a mix of models including GPT-4, all for free! Apparently more features are coming soon, including multimodal features.
tmabraham
·3 lata temu·discuss
Okay, but are you a diffusion model/generative AI researcher?

As a researcher in this field, I found the article fairly understandable and accessible. I suspect that was the target audience.

The domain of diffusion models have a lot of terminology and concepts that are not explained here, so maybe that's why it's harder to understand?
tmabraham
·3 lata temu·discuss
It isn't like Stable Diffusion, it's more like Google's Imagen model.
tmabraham
·3 lata temu·discuss
Three of the authors of this paper work for Stability AI currently.

One of them even said: "Unfortunately we cannot release the weights. That's why I joined @StabilityAI to work on OS video models"

- https://twitter.com/andi_blatt/status/1648598423526932483
tmabraham
·3 lata temu·discuss
There are plans for an LLM course but very early ideas, stay tuned!
tmabraham
·3 lata temu·discuss
If you're interested in taking this course, you can check the forums and/or Discord where people will organize study groups going through the course. Some of the study groups organized are in-person, some are virtual. These are usually great opportunities to study with some real people at the same time and get that camaraderie.

https://forums.fast.ai https://discord.gg/YHtEBwzV
tmabraham
·3 lata temu·discuss
I have worked on the course with @jph00 and it's been an incredible experience! This is one of the most cutting edge courses about deep learning and diffusion models. Highly recommend folks check it out!

Link for more info: https://www.fast.ai/posts/part2-2023.html
tmabraham
·3 lata temu·discuss
I have worked on the course with @jph00 and it's been an incredible experience! This is one of the most cutting edge courses about deep learning and diffusion models. Highly recommend folks check it out!
tmabraham
·3 lata temu·discuss
the actual platform is called "HuggingFace Hub". The company itself is called "HuggingFace" or "Hugging Face" (I have seen it referred to in both ways, I am unsure which is officially correct). There is no namespace collision.