IRIS: Interleaved Reinforcement with Incremental Staged Curriculum for Cross-Lingual Mathematical Reasoning

Fuente: arXiv
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Autori principali: Gupta, Navya, Vyalla, Rishitej Reddy, Anand, Avinash, Kirtani, Chhavi, Cambria, Erik, Zhang, Zhengchen, Wang, Zhengkui, Liu, Timothy, Ng, Aik Beng, See, Simon, Shah, Rajiv Ratn
Natura: Preprint
Pubblicazione: 2026
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author Gupta, Navya
Vyalla, Rishitej Reddy
Anand, Avinash
Kirtani, Chhavi
Cambria, Erik
Zhang, Zhengchen
Wang, Zhengkui
Liu, Timothy
Ng, Aik Beng
See, Simon
Shah, Rajiv Ratn
author_facet Gupta, Navya
Vyalla, Rishitej Reddy
Anand, Avinash
Kirtani, Chhavi
Cambria, Erik
Zhang, Zhengchen
Wang, Zhengkui
Liu, Timothy
Ng, Aik Beng
See, Simon
Shah, Rajiv Ratn
contents Curriculum learning helps language models tackle complex reasoning by gradually increasing task difficulty. However, it often fails to generate consistent step-by-step reasoning, especially in multilingual and low-resource settings where cross-lingual transfer from English to Indian languages remains limited. We propose IRIS: Interleaved Reinforcement with Incremental Staged Curriculum, a two-axis framework that combines Supervised Fine-Tuning on progressively harder problems (vertical axis) with Reverse Curriculum Reinforcement Learning to reduce reliance on step-by-step guidance (horizontal axis). We design a composite reward combining correctness, step-wise alignment, continuity, and numeric incentives, optimized via Group Relative Policy Optimization (GRPO). We release CL-Math, a dataset of 29k problems with step-level annotations in English, Hindi, and Marathi. Across standard benchmarks and curated multilingual test sets, IRIS consistently improves performance, with strong results on math reasoning tasks and substantial gains in low-resource and bilingual settings, alongside modest improvements in high-resource languages.
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id arxiv_https___arxiv_org_abs_2604_24114
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle IRIS: Interleaved Reinforcement with Incremental Staged Curriculum for Cross-Lingual Mathematical Reasoning
Gupta, Navya
Vyalla, Rishitej Reddy
Anand, Avinash
Kirtani, Chhavi
Cambria, Erik
Zhang, Zhengchen
Wang, Zhengkui
Liu, Timothy
Ng, Aik Beng
See, Simon
Shah, Rajiv Ratn
Computation and Language
Curriculum learning helps language models tackle complex reasoning by gradually increasing task difficulty. However, it often fails to generate consistent step-by-step reasoning, especially in multilingual and low-resource settings where cross-lingual transfer from English to Indian languages remains limited. We propose IRIS: Interleaved Reinforcement with Incremental Staged Curriculum, a two-axis framework that combines Supervised Fine-Tuning on progressively harder problems (vertical axis) with Reverse Curriculum Reinforcement Learning to reduce reliance on step-by-step guidance (horizontal axis). We design a composite reward combining correctness, step-wise alignment, continuity, and numeric incentives, optimized via Group Relative Policy Optimization (GRPO). We release CL-Math, a dataset of 29k problems with step-level annotations in English, Hindi, and Marathi. Across standard benchmarks and curated multilingual test sets, IRIS consistently improves performance, with strong results on math reasoning tasks and substantial gains in low-resource and bilingual settings, alongside modest improvements in high-resource languages.
title IRIS: Interleaved Reinforcement with Incremental Staged Curriculum for Cross-Lingual Mathematical Reasoning
topic Computation and Language
url https://arxiv.org/abs/2604.24114