FROM ACTIVITY TO INTENT: GENERATING USER JOURNEYS WITH LLMS

Summary from the TLDR Data newsletter

Pinterest replaces a fragile keyword-clustering pipeline with a fine-tuned 4B LLM that converts a user's activity history into ranked, localized “journeys” (active goals). Teacher-model distillation makes it affordable at scale. The system improves notification engagement while applying strict output validation, safety filters, and feedback loops.