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Size Matters: How Big Is Too Big for An LLM?
Artificial Intelligence   Data Science   Latest   Machine Learning

Size Matters: How Big Is Too Big for An LLM?

Last Updated on February 24, 2024 by Editorial Team

Author(s): Dr. Leon Eversberg

Originally published on Towards AI.

Compute-optimal large language models according to the Chinchilla paper
The evolution of GPT’s number of parameters over time.

Large Language Models (LLMs) have grown rapidly in size over the past few years.

As shown in the graph above, GPT-1 was released in 2018 with 117 million parameters. GPT-4 was released in 2023 and is estimated to have more than a trillion parameters. This is roughly a 10x to 100x increase in size for each new iteration of GPT.

Increasing the size of LLMs has worked very well in the past because LLM performance is highly dependent on scale, which means three things: the number of model parameters, the size of the training dataset, and the amount of computation for training [1].

LLM test loss decreases smoothly when compute, dataset size, and parameters are scaled up. Image from [1]

In other words, if you want better results, just build a bigger model, collect more training data, and train for a longer period of time U+1F937‍U+2642️.

However, large models require a lot of memory, training data is limited, and computing is very expensive.

Not this chinchilla. Photo by Nyusha Svoboda on Unsplash

AI researchers at Google DeepMind found that many LLMs are significantly undertrained, meaning they are too big for the amount of data they are trained on.

To prove… Read the full blog for free on Medium.

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