Challenge: Existing methods for enhancing Large Language Models (LLMs) struggle with novelty and Reinforcement Learning from human feedback (RLHF) is costly.
Approach: They propose to use a Reward Model (RM) and a principle-guided LLM-as-a-Judge to enhance creative output over baselines.
Outcome: The proposed approach significantly enhances creative output over baselines, but the principle-guided LLM-as-a-Judge yields superior generation quality.

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Challenge: Existing reward models produce scalar scores and struggle to incorporate critiques in a natural language format.
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Challenge: Existing methods for improving large language models have focused on improving model responses rather than judgment capabilities, resulting in rapid saturation during iterative training.
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Challenge: Reinforcement learning (RL) can align language models with non-differentiable reward signals, such as human preferences, but the sparsity of these signals can lead to inefficient and unstable learning.
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Small Language Models can Outperform Humans in Short Creative Writing: A Study Comparing SLMs with Humans and LLMs (2025.coling-main)

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Check Your Work: Structured Checklist Feedback for Improving Large Language Models (2026.acl-long)

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Challenge: Recent advances in Large Language Models have been driven by verifiable feedback in deterministic domains like mathematics and code.
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Evaluating the Creativity of LLMs in Persian Literary Text Generation (2025.findings-emnlp)

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Challenge: Prior research has focused primarily on English, with limited exploration of non-English literary traditions and without standardized methods for assessing creativity.
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Language Model Council: Democratically Benchmarking Foundation Models on Highly Subjective Tasks (2025.naacl-long)

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Challenge: Existing evaluations of Large Language Models (LLMs) rely on a single large model to score outputs from other LLMs, but this is prone to intra-model bias and many tasks may be too subjective for a one model to judge fairly.
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Challenge: Recent studies focus on generative judges, but only on their judge ability.
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Improving Reward Models with Synthetic Critiques (2025.findings-naacl)

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Challenge: a recent study shows that reward models overfit on superficial features, hindering generalization performance . prevailing approach to training preference-based reward models presents several challenges .
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