OasisSimp: An Open-source Asian-English Sentence Simplification Dataset

Fuente: arXiv
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Autori principali: Liu, Hannah, Tian, Muxin, Ali, Iqra, Gao, Haonan, Wu, Qiaoyiwen, Yang, Blair, Thayasivam, Uthayasanker, Lee, En-Shiun Annie, Nakwijit, Pakawat, Ranathunga, Surangika, Shekhar, Ravi
Natura: Preprint
Pubblicazione: 2026
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author Liu, Hannah
Tian, Muxin
Ali, Iqra
Gao, Haonan
Wu, Qiaoyiwen
Yang, Blair
Thayasivam, Uthayasanker
Lee, En-Shiun Annie
Nakwijit, Pakawat
Ranathunga, Surangika
Shekhar, Ravi
author_facet Liu, Hannah
Tian, Muxin
Ali, Iqra
Gao, Haonan
Wu, Qiaoyiwen
Yang, Blair
Thayasivam, Uthayasanker
Lee, En-Shiun Annie
Nakwijit, Pakawat
Ranathunga, Surangika
Shekhar, Ravi
contents Sentence simplification aims to make complex text more accessible by reducing linguistic complexity while preserving the original meaning. However, progress in this area remains limited for mid-resource and low-resource languages due to the scarcity of high-quality data. To address this gap, we introduce the OasisSimp dataset, a multilingual dataset for sentence-level simplification covering five languages: English, Sinhala, Tamil, Pashto, and Thai. Among these, no prior sentence simplification datasets exist for Thai, Pashto, and Tamil, while limited data is available for Sinhala. Each language simplification dataset was created by trained annotators who followed detailed guidelines to simplify sentences while maintaining meaning, fluency, and grammatical correctness. We evaluate eight open-weight multilingual Large Language Models (LLMs) on the OasisSimp dataset and observe substantial performance disparities between high-resource and low-resource languages, highlighting the simplification challenges in multilingual settings. The OasisSimp dataset thus provides both a valuable multilingual resource and a challenging benchmark, revealing the limitations of current LLM-based simplification methods and paving the way for future research in low-resource sentence simplification. The dataset is available at https://OasisSimpDataset.github.io/.
format Preprint
id arxiv_https___arxiv_org_abs_2603_14111
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle OasisSimp: An Open-source Asian-English Sentence Simplification Dataset
Liu, Hannah
Tian, Muxin
Ali, Iqra
Gao, Haonan
Wu, Qiaoyiwen
Yang, Blair
Thayasivam, Uthayasanker
Lee, En-Shiun Annie
Nakwijit, Pakawat
Ranathunga, Surangika
Shekhar, Ravi
Computation and Language
Sentence simplification aims to make complex text more accessible by reducing linguistic complexity while preserving the original meaning. However, progress in this area remains limited for mid-resource and low-resource languages due to the scarcity of high-quality data. To address this gap, we introduce the OasisSimp dataset, a multilingual dataset for sentence-level simplification covering five languages: English, Sinhala, Tamil, Pashto, and Thai. Among these, no prior sentence simplification datasets exist for Thai, Pashto, and Tamil, while limited data is available for Sinhala. Each language simplification dataset was created by trained annotators who followed detailed guidelines to simplify sentences while maintaining meaning, fluency, and grammatical correctness. We evaluate eight open-weight multilingual Large Language Models (LLMs) on the OasisSimp dataset and observe substantial performance disparities between high-resource and low-resource languages, highlighting the simplification challenges in multilingual settings. The OasisSimp dataset thus provides both a valuable multilingual resource and a challenging benchmark, revealing the limitations of current LLM-based simplification methods and paving the way for future research in low-resource sentence simplification. The dataset is available at https://OasisSimpDataset.github.io/.
title OasisSimp: An Open-source Asian-English Sentence Simplification Dataset
topic Computation and Language
url https://arxiv.org/abs/2603.14111