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New research reveals language models struggle with consistent temporal encoding

A new paper from arXiv investigates how language models encode the current year, finding that models struggle with consistent temporal reasoning. Researchers developed two tasks to probe this: an associative task using verb tense and a declarative task directly asking for the year. While instruction-tuned models can estimate the current year within a year of their training data cutoff, their internal mechanisms for associative and declarative tasks differ significantly. Attempts to update the current year through prompting, supervised fine-tuning (SFT), or weight editing proved largely unsuccessful in shifting both notions simultaneously, highlighting a challenge in keeping language models temporally up-to-date. AI

IMPACT Highlights a limitation in current LLMs regarding temporal reasoning, potentially impacting applications requiring up-to-date information.

RANK_REASON The cluster contains a research paper detailing findings about language model capabilities. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.CL →

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New research reveals language models struggle with consistent temporal encoding

COVERAGE [1]

  1. arXiv cs.CL TIER_1 English(EN) · Suze van Adrichem, Aditi Bhaskar, Diyi Yang, Christopher Potts, Jing Huang ·

    Do Language Models Consistently Encode the Current Year?

    arXiv:2608.15507v1 Announce Type: new Abstract: A consistent concept of the current time is important for temporal reasoning, yet how language models represent the current time is not well understood. We contribute two tasks that probe the current year in conceptually distinct wa…