Definition

Complex Number Representation of Paired Vector Components

A real-valued vector x\mathbf{x} of dimension dd can be transformed into a complex-valued vector x\mathbf{x}' of dimension d/2d/2. This is achieved by pairing adjacent components of x\mathbf{x} to form the real and imaginary parts of each new complex component. The transformation is formally expressed as: x=(x1+ix2,x3+ix4,,xd1+ixd)\mathbf{x}' = (x_1 + ix_2, x_3 + ix_4, \dots, x_{d-1} + ix_d) where ii is the imaginary unit. Each element xkx'_k of the new vector is x2k1+ix2kx_{2k-1} + i x_{2k}.

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Updated 2026-05-02

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Ch.2 Generative Models - Foundations of Large Language Models

Foundations of Large Language Models

Foundations of Large Language Models Course

Computing Sciences