Challenge: a new reward model for low-resource Indic languages is proposed . a preference-based training approach is prohibitively expensive, authors say .
Approach: a new in-context learning framework is proposed to train a retriever to select in-constext examples from low-resource Indic languages.
Outcome: a new in-context learning framework for reward modeling in low-resource Indic languages is developed . the proposed framework outperforms existing examples on three preference datasets .

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Challenge: Multilingual human preference data are difficult to obtain at scale, making it challenging to extend this framework to diverse languages.
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Challenge: Existing reward models perform suboptimal on held-out benchmarks, resulting in poor quality outputs.
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PromptRefine: Enhancing Few-Shot Performance on Low-Resource Indic Languages with Example Selection from related Example Banks (2025.naacl-long)

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Challenge: Large Language Models (LLMs) have demonstrated impressive few-shot learning capabilities through in-context learning.
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Challenge: Structured Multilingual Reward Modeling Framework extends Reinforcement Learning with Verifiable Rewards (RLVR) to subjective and open-ended tasks.
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Challenge: Recent Large Language Models (LLMs) are prone to hallucination and their outputs often contain incorrect or unverifiable claims.
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Challenge: Reinforcement learning from human feedback (RLHF) is a dominant approach for large language models to follow instructions and produce meaningful alignment.
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Aligning Large Language Models via Fine-grained Supervision (2024.acl-short)

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Challenge: Pre-trained large-scale language models often generate biased or toxic text, misaligning with human intentions.
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Challenge: Recent advances in large language models have relied on the large reward model for fine-tuning, but the use of a single reward model across domains may not always be optimal.
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Prototypical Reward Network for Data-Efficient Model Alignment (2024.acl-long)

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