LLMs Are Classifiers: How Language Models Predict the Next Token

Ready Tensor · Intermediate ·🧠 Large Language Models ·1mo ago
In this video, we break down one of the most important ideas behind large language models: there is no magic behind text generation — it’s a classification problem. You’ll see how LLMs take a prompt as input and assign probabilities to every possible next token in their vocabulary, then choose the most likely one. Using simple, visual examples, we show how changing just one word in a prompt can completely change the model’s probability distribution and final output. You’ll learn how to: * Think about LLM text generation as multi-class classification * Understand what “next-token prediction” …
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Chapters (8)

Why LLM text generation feels like magic
0:18 LLMs as classification problems
0:40 Tokens as classes and probability distributions
2:19 Visualizing high- and low-probability tokens
4:25 Vocabulary size and number of classes
4:42 How changing one word changes probabilities
6:04 Interactive tool for exploring token predictions
6:25 Real-world examples and experimentation
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