AI Frontiers: The future of scale with Ahmed Awadallah and Ashley Llorens
Sep 14, 2023
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AI scientists Ahmed Awadallah and Ashley Llorens discuss the future of scale in AI, including advancements in large-scale models like GPT-4 and their impact on reasoning and problem-solving. They explore the dynamics between model size and data, the use of large-scale models to improve smaller ones, and the need for better evaluation strategies. They also delve into topics such as spending compute budget on bigger models, the capabilities and limitations of AI models, the concept of post-training in language model training, and advancements in AI and adaptive alignment.
The importance of data, especially high-quality and representative data, has been recognized as crucial in improving the performance of large-scale AI models.
The use of powerful models like GPT-4 to train smaller, more specialized models can enhance reasoning abilities and boost performance in specific domains and tasks.
Deep dives
The Importance of Data in AI Progress
The podcast episode discusses how the understanding of what drives progress in AI has evolved over the years. While scale was initially thought to be the main driver, the importance of data in training AI models has become increasingly clear. More data, especially high-quality and representative data, has proven to be crucial in improving the performance of large-scale models. The podcast also highlights the value of training models on diverse datasets, including text and code, which surprisingly enhances their performance in various tasks. Additionally, the episode explores the two stages of training models: pre-training and post-training, and how they contribute to further advancements in AI.
The Impact of Model Size in AI Development
The discussion delves into the significance of model size in AI development. The use of transformer models, like GPT-4, has shown that increasing the number of layers and parameters in the model can lead to improved performance. The exponential growth in model size has pushed the boundaries of what is considered a large model. While there has been ongoing research on finding the optimal model size based on compute resources and data, recent findings suggest that prioritizing more data alongside model size can yield substantial benefits. It is noted that having a smaller model can be advantageous during model deployment and inference. The episode also mentions the emergence of novel techniques, such as distillation and self-improvement, which allow models to enhance their own performance.
Evaluating Performance and Benchmarking in AI
The podcast covers the challenges of evaluating and benchmarking the performance of large AI models. Traditional benchmarking methods are becoming saturated rapidly, prompting the need for new approaches. The community has been exploring various benchmarks that measure model capabilities, such as reasoning, document summarization, and fiction writing. However, these benchmarks often provide a limited perspective on overall model capabilities, particularly for advanced models like GPT-4. The episode emphasizes the importance of continuously improving strategies for evaluating generative language models. It also highlights the necessity of expanding benchmarking efforts to accurately reflect the true capabilities of these models.
Harnessing the Power of Large Models for Specialized Training
The podcast episode introduces the concept of using powerful models like GPT-4 to train smaller, more specialized models. By leveraging the explanations and step-by-step traces generated by a large model, the smaller model can benefit from improved reasoning abilities. The discussion emphasizes the potential of this approach for boosting performance in specific domains and tasks. The episode mentions the ORCA paper, which explores progressive learning from complex explanation traces of GPT-4. Examples are provided, demonstrating how the smaller model can enhance its reasoning capabilities based on the guidance of the larger model. The paper also highlights the importance of safety evaluations and the need to ensure ethical and responsible use of AI models.
Powerful large-scale AI models like GPT-4 are showing dramatic improvements in reasoning, problem-solving, and language capabilities. This marks a phase change for artificial intelligence—and a signal of accelerating progress to come.
In this Microsoft Research Podcast series, AI scientist and engineer Ashley Llorens hosts conversations with his collaborators and colleagues about what these models—and the models that will come next—mean for our approach to creating, understanding, and deploying AI, its applications in areas such as healthcare and education, and its potential to benefit humanity.
This episode features Senior Principal Research Manager Ahmed H. Awadallah, whose work improving the efficiency of large-scale AI models and efforts to help move advancements in the space from research to practicehave put him at the forefront of this new era of AI. Awadallah discusses the shift in dynamics between model size and amount—and quality—of data when it comes to model training;the recently published paper “Orca: Progressive Learning from Complex Explanation Traces of GPT-4,” which further explores the use of large-scale AI models to improve the performance of smaller, less powerful ones; and the need for better evaluation strategies, particularly as we move into a future in which Awadallah hopes to see gains in these models’ ability to continually learn.