Challenge: Using a sequence-level constraint, we regularize the LLMtraining by penalizing the KL divergence between the desired output distribution and the LRM’s posterior.
Approach: They propose a constraint learning schema forfine-tuning Large Language Models with attribute control by penalizing the KL divergence be-tween the desired output distribution and the LLM's posterior.
Outcome: The proposed approach improves the performance of large language models while enhancing their utility and generation quality.

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Fine-tuning Large Language Models with Limited Data: A Survey and Practical Guide (2026.tacl-1)

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Challenge: Pre-trained language models provide strong foundations, but effective adaptation under data scarcity requires efficient and efficient fine-tuning techniques.
Approach: They propose to review parameter-efficient fine-tuning techniques that lower training and deployment costs and domain and cross-lingual adaptation methods for both encoder and decoder models.
Outcome: The proposed techniques lower training and deployment costs, domain and cross-lingual adaptation methods, and model specialization strategies.
DSCD: Large Language Model Detoxification with Self-Constrained Decoding (2025.emnlp-main)

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Challenge: Existing methods for decoding large language models (LLMs) are based on external constraints and require additional resource overhead and loss of generation fluency.
Approach: They propose a method for LLMs detoxification without parameter fine-tuning that strengthens the inner token distribution while weakening that of hallucination and toxic layer during output generation.
Outcome: Extensive experiments on open-source LLMs and public datasets demonstrate DSCD's state-of-the-art (SOTA) performance in detoxification and generation fluency, with superior efficiency compared to existing methods.
Unveiling the Generalization Power of Fine-Tuned Large Language Models (2024.naacl-long)

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Challenge: Large Language Models (LLMs) have demonstrated exceptional multitasking abilities, but the comprehensive effects of fine-tuning on the LLMs’ generalization ability are not fully understood.
Approach: They conduct extensive experiments across five distinct language tasks on different datasets to investigate whether fine-tuning affects the generalization ability intrinsic to LLMs.
Outcome: The proposed model can generalize to different domains and tasks by integrating the in-context learning strategy during fine-tuning on generation tasks.
Detoxifying Large Language Models via Knowledge Editing (2024.acl-long)

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Challenge: Existing methods to detoxify Large Language Models (LLMs) are limiting, but knowledge editing can be effective.
Approach: They propose a baseline method to detoxify Large Language Models (LLMs) they propose supervised fine-tuning and reinforcement learning from human feedback (RLHF)
Outcome: The proposed method reduces toxicity of large language models with one instance of tuning . it reduces the toxicity, while minimizing the toxins, the authors show .
MICo: Preventative Detoxification of Large Language Models through Inhibition Control (2024.findings-naacl)

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Challenge: Large Language Models (LLMs) have a tendency to devolve into toxic degeneration . model may classify prompts as toxic or non-toxic and categorically refuse to respond to those deemed toxic.
Approach: They propose a mechanism for LLM detoxification by labeling acceptable and unacceptable examples and including a corresponding acceptable rewrite with every unacceptable example.
Outcome: The proposed model improves on the baseline model and shows that it detects and rewrites toxic and harmful examples.
LLMRefine: Pinpointing and Refining Large Language Models via Fine-Grained Actionable Feedback (2024.findings-naacl)

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Challenge: Recent large language models (LLMs) are leveraging human feedback to improve their output quality. however, human feedback is costly to collect, especially at inference time when the model provides new, unseen input.
Approach: They propose an inference-time optimization method to refine large language models' output based on fine-grained feedback to pinpoint defects and guide iterative refinement .
Outcome: The proposed method consistently outperforms baseline approaches on three text generation tasks, including machine translation, long-form question answering, and topical summarization.
Fine-Tuning Pre-trained Language Model with Weak Supervision: A Contrastive-Regularized Self-Training Approach (2021.naacl-main)

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Challenge: Fine-tuned pre-trained language models (LMs) have enormous success in many natural language processing tasks, but they still require excessive labeled data in the fine-tuning stage.
Approach: They propose a framework to enable fine-tuning pre-trained language models with weak supervision without any labeled data.
Outcome: The proposed framework outperforms the strongest baseline and achieves competitive performance with fully-supervised fine-tuning methods.
Cross-Lingual Transfer of Debiasing and Detoxification in Multilingual LLMs: An Extensive Investigation (2025.findings-acl)

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Challenge: Prior work has shown that finetuning on specialized datasets can mitigate this behavior, and doing so in English can transfer to other languages.
Approach: They propose to fine tune generative large language models to provide safe responses to harmful user input and to use direct preference optimization to mitigate toxicity.
Outcome: The proposed models show that finetuning on specialized datasets reduces biases but also produces fluent and diverse text in non-English languages.
Matching Pairs: Attributing Fine-Tuned Models to their Pre-Trained Large Language Models (2023.acl-long)

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Challenge: generative large language models (LLMs) are widely used but fine-tuned to improve performance on downstream applications leads to violations of model licenses, model theft, and copyright infringement.
Approach: They propose to trace back the origin of a model trained to its pre-trained base model . they use different knowledge levels and attribution strategies to find out how the model was trained .
Outcome: The proposed method can trace back 8 out of 10 fine tuned models with different knowledge levels and attribution strategies.
Model Surgery: Modulating LLM’s Behavior Via Simple Parameter Editing (2025.naacl-long)

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Challenge: Current approaches for detoxification or preventing jailbreaking involve fine-tuning billions of parameters through gradient descent with substantial computational cost.
Approach: They propose to use supervised fine-tuning and Reinforcement Learning from human feedback to modify LLMs' behavior by directly editing a small subset of parameters.
Outcome: Experiments show that editing a small subset of parameters can modulate specific behaviors of LLMs, such as detoxification and resistance to jailbreak, with only inference-level computational resources.

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