Dynamic Model Switching to Mitigate Outdated Knowledge in Large Language Models

Ramakrishna Pinninti, Sabyasachi Kamila, Ayan Mazumder, Mohammed Hasanuzzaman


Abstract
Generating timely and accurate content is a significant challenge for Large Language Models (LLMs). Obsolete information reduces their reliability and user trust. To overcome the limitations of single models in adapting to evolving information, we propose a dynamic switching model. A multitask trained switch model objective, adaptively picks between a large model that does not have recent information and a smaller model fine-tuned on recent information using contextual and temporal indicators. This method incorporates semantic update detection and temporal switching, which predicts text obsolescence through aggregation of reward signals. For evaluation, we curated the Temporally-aware Dynamic Dataset (TaDD) on Wikipedia and Guardian articles, which are frequently updated. Our framework achieves a balanced precision-recall trade-off on five datasets without continuous retraining, which shows that the model is efficient and adaptable compared to static pretrained models.
Anthology ID:
2026.lrec-main.195
Volume:
Proceedings of the Fifteenth Language Resources and Evaluation Conference
Month:
May
Year:
2026
Address:
Palma de Mallorca, Spain
Editors:
Stelios Piperidis, Núria Bel, Henk van den Heuvel, Nancy Ide, Simon Krek, Antonio Toral
Venue:
LREC
SIG:
Publisher:
ELRA Language Resource Association
Note:
Pages:
2490–2500
Language:
URL:
https://preview.aclanthology.org/ingest-lrec/2026.lrec-main.195/
DOI:
Bibkey:
Cite (ACL):
Ramakrishna Pinninti, Sabyasachi Kamila, Ayan Mazumder, and Mohammed Hasanuzzaman. 2026. Dynamic Model Switching to Mitigate Outdated Knowledge in Large Language Models. International Conference on Language Resources and Evaluation, main:2490–2500.
Cite (Informal):
Dynamic Model Switching to Mitigate Outdated Knowledge in Large Language Models (Pinninti et al., LREC 2026)
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PDF:
https://preview.aclanthology.org/ingest-lrec/2026.lrec-main.195.pdf