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Hyeong Kyu Choi

9 accepted papers

2025

Debate or Vote: Which Yields Better Decisions in Multi-Agent Large Language Models?

NeurIPS 2025spotlight

Multi-Agent Debate (MAD) has emerged as a promising paradigm for improving the performance of large language models through collaborative reasoning. Despite recent advances, the key factors driving MAD’s effectiveness remain unclear. In this work, we disentangle MAD into two key components–Majority…

Cited by 0SourcecodeScholar
2025

How Contaminated Is Your Benchmark? Measuring Dataset Leakage in Large Language Models with Kernel Divergence

ICML 2025poster

Dataset contamination, where evaluation datasets overlap with pre-training corpora, inflates performance metrics and undermines the reliability of model evaluations. Measuring dataset contamination thus becomes essential to ensure that performance evaluations genuinely reflect a model's ability to g…

2025

Mitigating Selection Bias with Node Pruning and Auxiliary Options

ACL 2025long

Large language models (LLMs) often exhibit systematic preferences for certain answer choices when responding to multiple-choice questions—a behavior known as selection bias. This bias reduces the accuracy and reliability of LLM outputs, limiting their usefulness in decision-critical applications. Wh…

Cited by 0SourcePDFScholar
2024

PICLe: Eliciting Diverse Behaviors from Large Language Models with Persona In-Context Learning

ICML 2024poster

Large Language Models (LLMs) are trained on massive text corpora, which are encoded with diverse personality traits. This triggers an interesting goal of eliciting a desired personality trait from the LLM, and probing its behavioral preferences. Accordingly, we formalize the persona elicitation task…

2023

MELTR: Meta Loss Transformer for Learning To Fine-Tune Video Foundation Models

CVPR 2023poster

Foundation models have shown outstanding performance and generalization capabilities across domains. Since most studies on foundation models mainly focus on the pretraining phase, a naive strategy to minimize a single task-specific loss is adopted for fine-tuning. However, such fine-tuning methods d…

2023

NuTrea: Neural Tree Search for Context-guided Multi-hop KGQA

NeurIPS 2023poster

Multi-hop Knowledge Graph Question Answering (KGQA) is a task that involves retrieving nodes from a knowledge graph (KG) to answer natural language questions. Recent GNN-based approaches formulate this task as a KG path searching problem, where messages are sequentially propagated from the seed nod…

2023

Relation-Aware Language-Graph Transformer for Question Answering

AAAI 2023technical

Question Answering (QA) is a task that entails reasoning over natural language contexts, and many relevant works augment language models (LMs) with graph neural networks (GNNs) to encode the Knowledge Graph (KG) information. However, most existing GNN-based modules for QA do not take advantage of ri…

2022

Consistency Learning via Decoding Path Augmentation for Transformers in Human Object Interaction Detection

CVPR 2022poster

Human-Object Interaction detection is a holistic visual recognition task that entails object detection as well as interaction classification. Previous works of HOI detection has been addressed by the various compositions of subset predictions, e.g., Image -> HO -> I, Image -> HI -> O. Recently, tran…

Cited by 31PDFcodeScholar
2022

TokenMixup: Efficient Attention-guided Token-level Data Augmentation for Transformers

NeurIPS 2022accept

Mixup is a commonly adopted data augmentation technique for image classification. Recent advances in mixup methods primarily focus on mixing based on saliency. However, many saliency detectors require intense computation and are especially burdensome for parameter-heavy transformer models. To this e…