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A model is generating a sequence of elements (x₀, x₁, x₂, x₃, ...). To calculate the probability of the fourth element (x₃), the model's calculation must be conditioned on the entire preceding subsequence (x₀, x₁, x₂). A simplified model that conditions the probability of x₃ only on the immediately preceding element (x₂) would still be correctly applying the principle of autoregressive conditional probability.
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Ch.2 Generative Models - Foundations of Large Language Models
Foundations of Large Language Models
Foundations of Large Language Models Course
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Chain Rule for Sequence Probability
Conditional Probability of the Next Token
A model is generating a sequence of words. It has already produced the words 'The', 'quick', 'brown'. According to the principle of autoregressive conditional probability, which expression correctly represents the likelihood that the next word will be 'fox', given the preceding words?
Defining Probability for a Token in a Sequence
A model is generating a sequence of elements (x₀, x₁, x₂, x₃, ...). To calculate the probability of the fourth element (x₃), the model's calculation must be conditioned on the entire preceding subsequence (x₀, x₁, x₂). A simplified model that conditions the probability of x₃ only on the immediately preceding element (x₂) would still be correctly applying the principle of autoregressive conditional probability.