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stellalisy/HorizonBench

HorizonBench Long-Horizon Personalization with Evolving Preferences HorizonBench evaluates whether language models can track user preferences as they evolve across months of interaction. Each benchmark item is a 5-option multiple-choice question embedded within a conversation history averaging ~163K tokens. Pre-evolution preference values serve as hard-negative distractors, enabling diagnosis of belief-update failure: models retrieve the user's originally stated preference but… See the full description on the dataset page: https://huggingface.co/datasets/stellalisy/HorizonBench.

Author / organizationstellalisy
License (as declared)cc-by-4.0
Downloads1.8K (as reported by Hugging Face)
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Created15 April 2026
Last updated at source21 April 2026
personalizationlong-contextpreference-evolutionbelief-updateuser-modeling
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  • 17 Oct 2026 Description: HorizonBench Long-Horizon Personalization with Evolving Preferences HorizonBench evaluates whether language models can track user preferences as they evolve across months of interaction. Each benchmark item is a 5-option multiple-choice que → HorizonBench Long-Horizon Personalization with Evolving Preferences HorizonBench evaluates whether language models can track user preferences as they evolve across months of interaction. Each benchmark item is a 5-option multiple-choice que

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