TemporalWiki: A Lifelong Benchmark for Training and Evaluating Ever-Evolving Language Models
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Abstract (arXiv)
Language Models (LMs) become outdated as the world changes; they often fail to perform tasks requiring recent factual information which was absent or different during training, a phenomenon called temporal misalignment. This is especially a challenging problem because the research community still lacks a coherent dataset for assessing the adaptability of LMs to frequently-updated knowledge corpus such as Wikipedia. To this end, we introduce TemporalWiki, a lifelong benchmark for ever-evolving LMs that utilizes the difference between consecutive snapshots of English Wikipedia and English Wikidata for training and evaluation, respectively. The benchmark hence allows researchers to periodically track an LM's ability to retain previous knowledge and acquire updated/new knowledge at each point in time. We also find that training an LM on the diff data through continual learning methods achieves similar or better perplexity than on the entire snapshot in our benchmark with 12 times less computational cost, which verifies that factual knowledge in LMs can be safely updated with minimal training data via continual learning. The dataset and the code are available at https://github.com/joeljang/temporalwiki.
Key facts. Cited by 117 papers in the map (data through 7 Oct 2026). Builds on 34 of its 48 references that are in the map. First posted on arXiv 29 Apr 2022.
Builds on
34 of 48 references.
References · 34
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- 2020How Much Knowledge Can You Pack Into the Parameters of a Language Model?cited by 713
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- 2021Entity-Based Knowledge Conflicts in Question Answeringcited by 349
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- 2021Time-Aware Language Models as Temporal Knowledge Basescited by 290
- 2021Mind the Gap: Assessing Temporal Generalization in Neural Language Modelscited by 226
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- 2021Towards Continual Knowledge Learning of Language Modelscited by 172
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- 2022TimeLMs: Diachronic Language Models from Twittercited by 129
- 2021How much do language models copy from their training data? Evaluating linguistic novelty in text generation using RAVENcited by 124
- 2021Lifelong Pretraining: Continually Adapting Language Models to Emerging Corporacited by 114
- 2021Time Waits for No One! Analysis and Challenges of Temporal Misalignmentcited by 91
- 2021The Web Is Your Oyster - Knowledge-Intensive NLP against a Very Large Web Corpuscited by 60
- 2021Temporal Adaptation of BERT and Performance on Downstream Document Classification: Insights from Social Mediacited by 51
- 2021Time Masking for Temporal Language Modelscited by 46
- 2021Temporal Effects on Pre-trained Models for Language Processing Taskscited by 46
- 2021FRUIT: Faithfully Reflecting Updated Information in Textcited by 39
- 2021Dynamic Language Models for Continuously Evolving Contentcited by 27
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Citing papers per year: 2022: 11; 2023: 23; 2024: 41; 2025: 20; 2026: 22.
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