Tanishq Mathew Abraham, Ph.D. Profile picture
Aug 20, 2021 11 tweets 4 min read Read on X
The Tesla team discussed how they are using AI to crack Full Self Driving (FSD) at their Tesla AI Day event.

They introduced many cool things:
- HydraNets
- Dojo Processing Units
- Tesla bots
- So much more...

Here's a quick summary 🧵:
They introduced their single deep learning model architecture ("HydraNet") for feature extraction and transforming into a "vector space"
This includes multi-scale features from each of the 8 cameras, integrated with a transformer to attend to important features, incorporating kinematic features, processing in a spatiotemporal manner using a feature queue and spatial RNNs, all trained multi-task learning.
Planning and control of the car utilizes reinforcement learning-based approaches
Here is the entire pipeline put together:
Next, they discussed their labeling pipeline‚ which is all done in-house. The way they do this is by labeling directly in this "vector space"
They also use simulations to provide additional data:
The Tesla team also discussed their Dojo supercomputers, which are specialized supercomputers for machine learning!

While the hardware is still in development, they are developing exaflop-level servers!
Then, out of nowhere, @elonmusk introduces Tesla Bot!

The Tesla AI team is designing and building a humanoid bot to perform repetitive tasks, using the AI algorithms originally used to develop FSD.
I have only covered the tip of the iceberg!

Check out the recording here:
A quick clarification: the RL-based techniques are not used in production for planning and control yet but they are exploring it currently... Nonetheless, it is still very exciting and interesting!

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More from @iScienceLuvr

May 13
The livestream demo is not the only cool part about GPT-4o

Remember, GPT-4o is an end-to-end trained multimodal model!

No one is reading the GPT-4o blog post which highlights so many other cool features

SEE MORE FEATURES GPT-4o HAS ↓
First of all, GPT-4o is a much better language model. It's SOTA on a variety of LLM benchmarks:
And also good at chat arena evals
Read 11 tweets
May 8
AlphaFold3 is out!

This a diffusion model pipeline that goes beyond what AlphaFold2 did: predicting the structures of protein-molecule complexes containing DNA, RNA, ions, etc.

Blog post:
Paper:

A quick thread about the method↓blog.google/technology/ai/…
nature.com/articles/s4158…
AlphaFold2 was impactful but had one major limitation: it could only predict structures of proteins by itself.

In reality, proteins have various modifications, bind to other molecules, form complexes w/ DNA, RNA, etc.

Structure of these complexes can't be predicted by AF2
AF3 is similar to AF2, utilizing Template, MSA & Pairformer (similar to Evoformer from AF2) modules

However, amino acid + DNA/RNA/ion/ligand/post-translational modifications can be passed in unlike AF2

Also, the structure is directly generated with a diffusion model (3/11) Image
Read 12 tweets
Apr 30
Google announces Med-Gemini, a family of Gemini models fine-tuned for medical tasks! 🔬

Achieves SOTA on 10 of the 14 benchmarks, spanning text, multimodal & long-context applications.

Surpasses GPT-4 on all benchmarks!

This paper is super exciting, let's dive in ↓Image
The team developed a variety of model variants. First let's talk about the models they developed for language tasks.

The finetuning dataset is quite similar to Med-PaLM2, except with one major difference:

self-training with search

(2/14)Image
The goal is to improve clinical reasoning and ability to use search results.

Synthetic chain-of-thought w/ and w/o search results in context are generated, incorrect preds are filtered out, the model is trained on those CoT, and then the synthetic CoT is regenerated

(3/14)Image
Read 15 tweets
Jan 23
Happy to share a new paper I worked on!:

"Scalable High-Resolution Pixel-Space Image Synthesis with Hourglass Diffusion Transformers"

abs:
website:

A quick thread about the paper! ↓ (1/11) arxiv.org/abs/2401.11605
crowsonkb.github.io/hourglass-diff…
Image
Before I continue, I want to mention this work was led by @RiversHaveWings, @StefanABaumann, @Birchlabs. @DanielZKaplan, @EnricoShippole were also valuable contributors. (2/11)
High-resolution image synthesis w/ diffusion is difficult without using multi-stage models (ex: latent diffusion). It's even more difficult for diffusion transformers due to O(n^2) scaling. So we want an easily scalable transformer arch for high-res image synthesis. (3/11)
Read 13 tweets
Dec 26, 2023
Are you wondering how the new Mamba language model works?

Mamba is based on state-space models (SSMs), a new competitor to the Transformer architecture.

Here are 5 resources to help you learn about SSMs & Mamba! ↓↓↓
1. Mamba - a replacement for Transformers? by @SamuelAlbanie
Link →

Provides a short and quick overview of Mamba and the literature leading up to it.
Image
2. Structured State Space Models for Deep Sequence Modeling ( @_albertgu, CMU)

Link →

This is a comprehensive 1-hr lecture about deep SSMs from its inventor. Very clear and informative!
Image
Read 7 tweets
Oct 30, 2023
The Biden-Harris administration has issued an Executive Order on AI safety. This is a big one!

Based on the Fact Sheet, here are some of the interesting parts of the EO ↓
There is significant focus on evaluation and standards for AI systems, including @NIST developing red-teaming standards. Image
There is also focus on security, including specifically biosecurity and cybersecurity, and preventing AI from exacerbating these issues. Image
Read 8 tweets

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