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  • Generative Reward Models: Merging the Power of RLHF and RLAIF for Smarter AI
    Introduction In recent years, we’ve witnessed tremendous progress in AI, primarily due to the rise of large language models (LLMs) such as LLaMA-3.1. To further enhance LLM capabilities, extensive research focuses on improving their training processes. In this post, we review a recent research paper by Stanford University and SynthLabs that suggests a potential improvement, which may significantly advance AI. The paper is titled “Generative Reward Models”, authored by some of the same individuals behind the widely-used DPO method. LLM Training Process Before diving to Generative Reward Models (GenRMs), let’s do a quick recap for how large language models are trained. Pre-training Stage LLMs are first pre-trained on huge amount of text, to learn general purpose knowledge. This step helps the LLM to be good at predicting the next token in a sequence, so for example given an input such as “write a bedtime _”, the LLM would be able to complete it with a reasonable word, such as “story”. However, after the pre-training stage the model is still not good at following human instructions. For this… Read more: Generative Reward Models: Merging the Power of RLHF and RLAIF for Smarter AI
  • Sapiens: Foundation for Human Vision Models
    Introduction In this post, we dive into a new release by Meta AI, presented in a research paper titled Sapiens: Foundation for Human Vision Models, which presents a family of models that target four fundamental human-centric tasks, which we see in the demo above. Fundamental Human-centric Tasks In the above figure from the paper, we can learn about the tasks targeted by Sapiens. Impressively, Meta AI achieves significant improvement comparing to prior state-of-the-art results for all of these tasks, and in the rest of the post we explain how these models were created. Humans-300M: Curating a Human Images Dataset The… Read more: Sapiens: Foundation for Human Vision Models
  • Mixture of Nested Experts: Adaptive Processing of Visual Tokens
    Motivation In recent years, we use AI for more and more use cases, interacting with models that provide us with remarkable outputs. As we move forward, the models we use are getting larger and larger, and so, an important research domain is to improve the efficiency of using and training AI models. Standard MoE Is Enough? A method which we already touched in a previous post, that became popular for large language models (LLMs), but later on also for computer vision, is Mixture-of-Experts (MoE), which helps to increase models size, without a proportional increase in computational cost. However, it comes… Read more: Mixture of Nested Experts: Adaptive Processing of Visual Tokens
  • Introduction to Mixture-of-Experts (MoE)
    In recent years, large language models are in charge of remarkable advances in AI, with models such as GPT-3 and 4 which are closed source and with open-source models such as LLaMA 2 and 3, and many more. However, as we moved forward, these models got larger and larger and it became important to find ways to improve their efficiency. Mixture-of-Experts (MoE) to the rescue. Mixture-of-Experts (MoE) High-Level Idea One known method that has been adapted with impressive success is called Mixture-of-Experts, or MoE in short, which allows to increase models capacity without a proportional increase in computational cost. The… Read more: Introduction to Mixture-of-Experts (MoE)

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  • Code Llama repository-level reasoning

    Code Llama Paper Explained

    Code Llama is a new family of open-source large language models for code by Meta AI that includes three type of models. Each type was released with 7B, 13B and 34B params. In this post we’ll explain the research paper behind them, titled “Code Llama: Open Foundation Models for Code”, to understand how these models…

  • DINOv2 as foundational model

    DINOv2 from Meta AI – Finally a Foundational Model in Computer Vision

    DINOv2 is a computer vision model from Meta AI that claims to finally provide a foundational model in computer vision, closing some of the gap from natural language processing where it is already common for a while now. In this post, we’ll explain what does it mean to be a foundational model in computer vision…

  • I-JEPA example

    I-JEPA – A Human-Like Computer Vision Model

    I-JEPA, Image-based Joint-Embedding Predictive Architecture, is an open-source computer vision model from Meta AI, and the first AI model based on Yann LeCun’s vision for a more human-like AI, which he presented last year in a 62 pages paper titled “A Path Towards Autonomous Machine Intelligence”.In this post we’ll dive into the research paper that…

  • YOLO-NAS

    What is YOLO-NAS and How it Was Created

    In this post we dive into YOLO-NAS, an improved version in the YOLO models family for object detection which was precented earlier this year by Deci. YOLO models have been around for a while now, presented in 2015 with the paper You Only Look Once, which is what the shortcut YOLO stands for, and over…

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