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Sequence of Predicted Future Values Notation

The notation y^i+1,y^i+2,y^i+3,\hat{y}_{i+1}, \hat{y}_{i+2}, \hat{y}_{i+3}, \dots represents a sequence of predicted future values, often the output of a forecasting or sequence generation model.

  • The hat symbol (^\hat{\cdot}) over the variable yy indicates that it is a predicted or estimated value, as opposed to an observed, ground-truth value.
  • The subscript i+ti+t denotes the value at a future time step tt relative to the current step ii. For example, y^i+1\hat{y}_{i+1} is the prediction for the next step in the sequence.
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Updated 2025-10-08

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Ch.5 Inference - Foundations of Large Language Models

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