Sequential recommendation systems struggle with cold start items due to limited interaction data. We show how Large Language Models (LLMs) can reason over warm-but-unseen items to generate synthetic interactions and improve cold start recommendations. At IKEA, we show how this approach can boost cold start performance while preserving warm start performance on room design data, highlighting how LLM reasoning can enhance recommendation systems.

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Data Augmentation with LLMs for Cold Start Recommendation in E-Commerce

  • Natalija Glisovic,
  • Martin Tegner,
  • Danica Kragic

摘要

Sequential recommendation systems struggle with cold start items due to limited interaction data. We show how Large Language Models (LLMs) can reason over warm-but-unseen items to generate synthetic interactions and improve cold start recommendations. At IKEA, we show how this approach can boost cold start performance while preserving warm start performance on room design data, highlighting how LLM reasoning can enhance recommendation systems.