Hieu Lam

lamhieu

AI & ML interests

.-.

Recent Activity

liked a model 2 days ago
Nexusflow/Athene-V2-Chat
liked a Space about 1 month ago
facebook/llm-transparency-tool-demo
liked a model about 1 month ago
Qwen/Qwen2-VL-2B-Instruct
View all activity

Articles

Organizations

Ghost X's profile picture Social Post Explorers's profile picture

lamhieu's activity

reacted to m-ric's post with ๐Ÿ”ฅ 2 months ago
view post
Post
1168
Emu3: Next-token prediction conquers multimodal tasks ๐Ÿ”ฅ

This is the most important research in months: weโ€™re now very close to having a single architecture to handle all modalities. The folks at Beijing Academy of Artificial Intelligence (BAAI) just released Emu3, a single model that handles text, images, and videos all at once.

๐—ช๐—ต๐—ฎ๐˜'๐˜€ ๐˜๐—ต๐—ฒ ๐—ฏ๐—ถ๐—ด ๐—ฑ๐—ฒ๐—ฎ๐—น?
๐ŸŒŸ Emu3 is the first model to truly unify all these different types of data (text, images, video) using just one simple trick: predicting the next token.
And itโ€™s only 8B, but really strong:
๐Ÿ–ผ๏ธ For image generation, it's matching the best specialized models out there, like SDXL.
๐Ÿ‘๏ธ In vision tasks, it's outperforming top models like LLaVA-1.6-7B, which is a big deal for a model that wasn't specifically designed for this.
๐ŸŽฌ It's the first to nail video generation without using complicated diffusion techniques.

๐—›๐—ผ๐˜„ ๐—ฑ๐—ผ๐—ฒ๐˜€ ๐—ถ๐˜ ๐˜„๐—ผ๐—ฟ๐—ธ?
๐Ÿงฉ Emu3 uses a special tokenizer (SBER-MoVQGAN) to turn images and video clips into sequences of 4,096 tokens.
๐Ÿ”— Then, it treats everything - text, images, and videos - as one long series of tokens to predict.
๐Ÿ”ฎ During training, it just tries to guess the next token, whether that's a word, part of an image, or a video frame.

๐—–๐—ฎ๐˜ƒ๐—ฒ๐—ฎ๐˜๐˜€ ๐—ผ๐—ป ๐˜๐—ต๐—ฒ ๐—ฟ๐—ฒ๐˜€๐˜‚๐—น๐˜๐˜€:
๐Ÿ‘‰ In image generation, Emu3 beats SDXL, but itโ€™s also much bigger (8B vs 3.5B). It would be more difficult to beat the real diffusion GOAT FLUX-dev.
๐Ÿ‘‰ In vision, authors also donโ€™t show a comparison against all the current SOTA models like Qwen-VL or Pixtral.

This approach is exciting because it's simple (next token prediction) and scalable(handles all sorts of data)!

Read the paper ๐Ÿ‘‰ Emu3: Next-Token Prediction is All You Need (2409.18869)
reacted to singhsidhukuldeep's post with ๐Ÿ‘ 3 months ago
view post
Post
1630
Just wrapped up a deep dive into the latest lecture on building LLMs, such as ChatGPT, from @Stanford CS229 course. Here are my top takeaways:

๐Ÿ” Understanding the Components: LLMs like ChatGPT, Claude, and others are more than just neural networks; they are a complex blend of architecture, training loss, data evaluation, and systems. Knowing how these components work together is key to improving and scaling these models.

๐Ÿ“Š Scaling Matters: Performance improves predictably with more data, bigger models, and greater computational power. However, balancing these factors is crucial to avoid overfitting and resource waste.

๐Ÿ“ˆ Data is King: LLMs are trained on trillions of tokens scraped from the internet, but the quality of this data matters immensely. Rigorous filtering and deduplication processes are essential to maintaining data integrity.

๐Ÿ—๏ธ Pre-Training vs. Post-Training: While pre-training equips the model with general knowledge, post-training (like RLHF) fine-tunes it to follow human-like responses, reducing toxic outputs and improving alignment with human values.

๐ŸŒ Reinforcement Learning from Human Feedback (RLHF): This technique allows LLMs to maximize outputs that align with human preferences, making models more reliable and accurate.

๐Ÿ’ก Why It Matters: Understanding these processes not only helps us appreciate the complexity behind our everyday AI tools but also highlights the challenges and opportunities in the ever-evolving field of AI.

Whether youโ€™re in tech, data science, or just AI-curious, staying updated on these advancements is crucial. LLMs are not just transforming industries; theyโ€™re redefining the future of human-computer interaction!

I just realized this was almost 2 hours long...

Link: https://www.youtube.com/watch?v=9vM4p9NN0Ts
ยท
replied to m-ric's post 3 months ago
view reply

Sounds interesting but I think there will be a big breakthrough, a new "architecture/methodology/factor/rethinking" for developing large models. That's what I think, I don't know what it is yet, haha.

reacted to m-ric's post with ๐Ÿ‘ 3 months ago
view post
Post
842
๐Ÿš€ย ๐—ช๐—ต๐—ฒ๐—ฟ๐—ฒ ๐˜€๐—ฐ๐—ฎ๐—น๐—ถ๐—ป๐—ด ๐—น๐—ฎ๐˜„๐˜€ ๐—ฎ๐—ฟ๐—ฒ ๐˜๐—ฎ๐—ธ๐—ถ๐—ป๐—ด ๐˜‚๐˜€ : ๐—ฏ๐˜† ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿด, ๐—”๐—œ ๐—–๐—น๐˜‚๐˜€๐˜๐—ฒ๐—ฟ๐˜€ ๐˜„๐—ถ๐—น๐—น ๐—ฟ๐—ฒ๐—ฎ๐—ฐ๐—ต ๐˜๐—ต๐—ฒ ๐—ฝ๐—ผ๐˜„๐—ฒ๐—ฟ ๐—ฐ๐—ผ๐—ป๐˜€๐˜‚๐—บ๐—ฝ๐˜๐—ถ๐—ผ๐—ป ๐—ผ๐—ณ ๐—ฒ๐—ป๐˜๐—ถ๐—ฟ๐—ฒ ๐—ฐ๐—ผ๐˜‚๐—ป๐˜๐—ฟ๐—ถ๐—ฒ๐˜€

Reminder : โ€œScaling lawsโ€ are empirical laws saying that if you keep multiplying your compute by x10, your models will mechanically keep getting better and better.

To give you an idea, GPT-3 can barely write sentences, and GPT-4, which only used x15 its amount of compute, already sounds much smarter than some of my friends (although it's not really - or at least I haven't tested them side-by side). So you can imagine how far a x100 over GPT-4 can take us.

๐ŸŽ๏ธย As a result, tech titans are racing to build the biggest models, and for this they need gigantic training clusters.

The picture below shows the growth of training compute: it is increasing at a steady exponential rate of a x10 every 2 years. So letโ€™s take this progress a bit further:
- 2022: starting training for GPT-4 : 10^26 FLOPs, cost of $100M
- 2024: today, companies start training on much larger clusters like the โ€œsuper AI clusterโ€ of Elon Muskโ€™s xAI, 10^27 FLOPS, $1B
- 2026 : by then clusters will require 1GW, i.e. around the full power generated by a nuclear reactor
- 2028: we reach cluster prices in the 100 billion dollars, using 10GW, more than the most powerful power stations currently in use in the US. This last size seems crazy, but Microsoft and OpenAI already are planning one.

Will AI clusters effectively reach these crazy sizes where the consume as much as entire countries?
โžก๏ธย Three key ingredients of training might be a roadblock to scaling up :
๐Ÿ’ธย Money: but itโ€™s very unlikely, given the potential market size for AGI, that investors lose interest.
โšก๏ธ Energy supply at a specific location
๐Ÿ“šย Training data: weโ€™re already using 15 trillion tokens for Llama-3.1 when Internet has something like 60 trillion.

๐Ÿค”ย Iโ€™d be curious to hear your thoughts: do you think weโ€™ll race all the way there?
ยท