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Yu Jin Kim

6 accepted papers

2026

A Regret Minimization Framework on Preference Learning in Large Language Models

ICML 2026spotlight

Reinforcement learning with verifiable rewards (RLVR) has enabled progress on reasoning-intensive tasks by relying on task-specific verifiers that provide automated correctness signals. However, many realistic language tasks are difficult to equip with reliable verifiers, motivating a growing relian…

Cited by 0SourceScholar
2026

SafeDPO: A Simple Approach to Direct Preference Optimization with Enhanced Safety

ICLR 2026oral

As Large Language Models (LLMs) are increasingly deployed in real-world applications, balancing both helpfulness and safety has become a central challenge. A natural approach is to incorporate safety constraints into Reinforcement Learning from Human Feedback (RLHF), where recent studies have shown…

Cited by 0SourceScholar
2024

Degeneration-free Policy Optimization: RL Fine-Tuning for Language Models without Degeneration

ICML 2024poster

As the pre-training objectives (e.g., next token prediction) of language models (LMs) are inherently not aligned with task scores, optimizing LMs to achieve higher downstream task scores is essential. One of the promising approaches is to fine-tune LMs through reinforcement learning (RL). However, c…

Cited by 0SourcePDFScholar
2024

Prospector: Improving LLM Agents with Self-Asking and Trajectory Ranking

EMNLP 2024finding

Large language models (LLMs) have shown the ability to solve complex decision-making tasks beyond natural language processing tasks. LLM agents based on few-shot in-context learning (ICL) achieve surprisingly high performance without training. Despite their simplicity and generalizability, ICL-based…

Cited by 8SourcePDFScholar
2022

Modularized Transfer Learning with Multiple Knowledge Graphs for Zero-shot Commonsense Reasoning

NAACL 2022long

Commonsense reasoning systems should be able to generalize to diverse reasoning cases. However, most state-of-the-art approaches depend on expensive data annotations and overfit to a specific benchmark without learning how to perform general semantic reasoning. To overcome these drawbacks, zero-shot…

Cited by 16SourcePDFScholar
2022

TrustAL: Trustworthy Active Learning Using Knowledge Distillation

AAAI 2022technical

Active learning can be defined as iterations of data labeling, model training, and data acquisition, until sufficient labels are acquired. A traditional view of data acquisition is that, through iterations, knowledge from human labels and models is implicitly distilled to monotonically increase the…

Cited by 10SourcePDFScholar