"Google Sets the Bar for AI Language Models with PaLM: Combining Efficiency and Performance with Laziness"
Hatched by Kazuki Nakayashiki
Aug 24, 2023
4 min read
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"Google Sets the Bar for AI Language Models with PaLM: Combining Efficiency and Performance with Laziness"
In the world of AI language models (LLMs), Google has recently made waves with its groundbreaking model called PaLM. With an impressive 540 billion parameters, PaLM stands alongside other massive LLMs like OpenAI's GPT-3, DeepMind's Gopher and Chinchilla, and Google's own GLaM and LaMDA. However, it's important to note that the number of parameters doesn't always guarantee a better-performing model.
When discussing LLMs, one crucial aspect to consider is the efficiency of the training process. PaLM utilizes a standard Transformer model architecture, but with some customizations. The Transformer architecture is widely used in LLMs, and while PaLM deviates from it in certain ways, what truly sets it apart is the focus of its training dataset.
The dataset used to train PaLM is a combination of various sources, including filtered multilingual web pages, English books, multilingual Wikipedia articles, English news articles, GitHub source code, and multilingual social media conversations. This dataset is based on the training data used for LaMDA and GLaM. Interestingly, nearly 78% of all sources are in English, with German and French sources making up a smaller percentage.
One remarkable achievement of PaLM is its ability to surpass the few-shot performance of previous LLMs on 28 out of 29 tasks. For instance, PaLM outperforms the prior top score achieved by fine-tuning GPT-3 with a training set of 7,500 problems and incorporating an external calculator and verifier. In fact, PaLM's new score even approaches the average of problems solved by 9- to 12-year-olds, which is the target audience for the question set.
While PaLM demonstrates the power of AI language models, it's interesting to explore the concept of laziness and how it can be beneficial. Contrary to popular belief, lazy people often excel at focusing on high-leverage activities. By carefully managing their energy expenditure, lazy individuals tend to avoid unnecessary tasks and instead prioritize those that yield maximum output with minimal input.
In fact, some of the greatest innovations in history have come from laziness. Think about everyday conveniences like light switches, remote controls, escalators, and smart speakers. These inventions were born out of a desire to find easier ways of doing things. As aeronautical engineer, Naval officer, and science-fiction author Robert A. Heinlein once said, "Progress isn't made by early risers. It's made by lazy men trying to find easier ways to do something."
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