New publication accepted in ACL Findings 2025

Our paper, Filling the Temporal Void: Recovering Missing Publication Years in the Project Gutenberg Corpus Using LLMs, has been accepted to the Findings of the 63rd Annual Meeting of the Association for Computational Linguistics (ACL 2025).

Omar Momen, Manuel Schaaf and Alexander Mehler. July, 2025. Filling the Temporal Void: Recovering Missing Publication Years in the Project Gutenberg Corpus Using LLMs. Findings of the Association for Computational Linguistics: ACL 2025, 17318–17334.
BibTeX
@inproceedings{Momen:Schaaf:Mehler:2025,
  title     = {Filling the Temporal Void: Recovering Missing Publication Years
               in the Project Gutenberg Corpus Using {LLM}s},
  author    = {Momen, Omar and Schaaf, Manuel and Mehler, Alexander},
  editor    = {Che, Wanxiang and Nabende, Joyce and Shutova, Ekaterina and Pilehvar, Mohammad Taher},
  booktitle = {Findings of the Association for Computational Linguistics: ACL 2025},
  month     = {jul},
  year      = {2025},
  address   = {Vienna, Austria},
  publisher = {Association for Computational Linguistics},
  url       = {https://aclanthology.org/2025.findings-acl.890/},
  pages     = {17318--17334},
  isbn      = {979-8-89176-256-5},
  abstract  = {Analysing texts spanning long periods of time is critical for
               researchers in historical linguistics and related disciplines.
               However, publicly available corpora suitable for such analyses
               are scarce. The Project Gutenberg (PG) corpus presents a significant
               yet underutilized opportunity in this context, due to the absence
               of accurate temporal metadata. We take advantage of language models
               and information retrieval to explore four sources of information
               {--} Open Web, Wikipedia, Open Library API, and PG books texts
               {--} to add missing temporal metadata to the PG corpus. Through
               20 experiments employing state-of-the-art Large Language Models
               (LLMs) and Retrieval-Augmented Generation (RAG) methods, we estimate
               the production years of all PG books. We curate an enriched metadata
               repository for the PG corpus and propose a refined version for
               it, which includes 53,774 books with a total of 3.8 billion tokens
               in 11 languages, produced between 1600 and 2000. This work provides
               a new resource for computational linguistics and humanities studies
               focusing on diachronic analyses. The final dataset and all experiments
               data are publicly available (https://github.com/OmarMomen14/pg-dates).},
  pdf       = {https://aclanthology.org/2025.findings-acl.890.pdf}
}