other · Zenodo (CERN European Organization for Nuclear Research) · 2025

UoL-UPF at TSAR 2025 Shared Task: A Generate-and-Select Approach for Readability-Controlled Text Simplification

Hayakawa, Akio, Khallaf, Nouran, Sharoff, Serge, Saggion, Horacio

Cited by 0Open access

Abstract

Abstract The TSAR 2025 Shared Task on ReadabilityControlled Text Simplification focuses on simplifying English paragraphs written at an advanced level (B2 or higher) and rewriting them to target CEFR levels (A2 or B1). The challenge is to reduce linguistic complexity without sacrificing coherence or meaning. We developed three complementary approaches based on large language models (LLMs). The first approach (Run 1) generates a diverse set of paragraph-level simplifications. It then applies filters to enforce CEFR alignment, preserve meaning, and encourage diversity, and finally selects the candidates with the lowest perceived risk. The second (Run 2) performs simplification at the sentence level, combining structured prompting, coreference resolution, and explainable AI techniques to highlight influential phrases, with candidate selection guidedby automatic and LLM-based judges. The third hybrid approach (Run 3) integrates both strategies by pooling paragraph- and sentencelevel simplifications, and subsequently applying the identical filtering and selection architecture used in Run 1. In the official TSAR evaluation, the hybrid system ranked 2nd overall, while its component systems also achieved competitive results

Cite this paper

APA 7

Hayakawa, A., Khallaf, N., Sharoff, S., & Saggion, H. (2025). UoL-UPF at TSAR 2025 Shared Task: A Generate-and-Select Approach for Readability-Controlled Text Simplification. Zenodo (CERN European Organization for Nuclear Research). https://doi.org/10.5281/zenodo.17698365

MLA 9

Hayakawa, Akio, et al. “UoL-UPF at TSAR 2025 Shared Task: A Generate-and-Select Approach for Readability-Controlled Text Simplification.” Zenodo (CERN European Organization for Nuclear Research), 2025, https://doi.org/10.5281/zenodo.17698365.

Chicago

Hayakawa, Akio, Nouran Khallaf, Serge Sharoff, and Horacio Saggion. 2025. “UoL-UPF at TSAR 2025 Shared Task: A Generate-and-Select Approach for Readability-Controlled Text Simplification.” Zenodo (CERN European Organization for Nuclear Research). https://doi.org/10.5281/zenodo.17698365.

Harvard

Hayakawa, A. et al. (2025) ‘UoL-UPF at TSAR 2025 Shared Task: A Generate-and-Select Approach for Readability-Controlled Text Simplification’, Zenodo (CERN European Organization for Nuclear Research). Available at: https://doi.org/10.5281/zenodo.17698365.

BibTeX

@misc{hayakawa2025tsar,
  title = {{UoL-UPF at TSAR 2025 Shared Task: A Generate-and-Select Approach for Readability-Controlled Text Simplification}},
  author = {Hayakawa, Akio and Khallaf, Nouran and Sharoff, Serge and Saggion, Horacio},
  journal = {Zenodo (CERN European Organization for Nuclear Research)},
  year = {2025},
  doi = {10.5281/zenodo.17698365}
}

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