Visual Representation of Iterative Soft Prompt Refinement

Consider a system where a set of learnable, non-textual prompt vectors are processed by a model's main computational layers alongside the standard input. After this initial processing pass, the resulting internal representations are used to calculate an updated set of prompt vectors, which then replace the original ones for a subsequent processing pass. What is the primary function of the model's main computational layers within this cyclical process?

A specific prompting technique uses a model's own computational layers to progressively improve a set of learnable, non-textual prompt vectors in a feedback loop. Arrange the following events to correctly describe a single cycle of this refinement process.

Analyzing a Flawed Prompt Optimization Implementation