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Sagan

Paper

CLIPer: Tailoring Diverse User Preference via Classifier-Guided Inference-Time Personalization

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AI summary

CLIPer uses a lightweight classifier to steer LLM generation at inference time toward different user preferences (helpfulness, conciseness, humor, etc.) without fine-tuning a separate model for every preference combination. The classifier guides generation dynamically, adding negligible computational cost while enabling controllable personalization across single and multi-dimensional preferences. Empirical results show the approach scales well and delivers effective personalized generation without extensive training.

Main takeaways:

  • Eliminates the need to fine-tune separate models for each preference combination (helpfulness+concise, helpful+humorous, etc.)
  • Uses a classifier model to dynamically steer generation toward desired preferences at inference time
  • Works across single preferences (just conciseness) and multi-dimensional combinations (concise + helpful)
  • Adds negligible computational overhead compared to fine-tuning multiple models
  • Enables more nuanced control over generation style without retraining