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Sandwich Positional Bias Formula
The Sandwich method calculates query-key positional bias as a sum of cosine functions based on the relative distance between a query at position and a key at position . The formula is defined as: , where is a hyperparameter.
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Foundations of Large Language Models
Ch.2 Generative Models - Foundations of Large Language Models
Foundations of Large Language Models Course
Computing Sciences
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Analyzing a Positional Bias Mechanism
A researcher is implementing a positional bias mechanism for a multi-layer transformer model, as introduced by Chi et al. in 2023. The goal is to influence the attention scores based on the relative positions of tokens. Given the specific design of this method, which of the following implementation strategies is correct?
The positional bias mechanism introduced by Chi et al. in 2023 applies its bias within every self-attention layer of a transformer model to ensure consistent spatial awareness is maintained throughout the entire network stack.
Sandwich Positional Bias Formula