activity
20222026
most citedLTE4G: Long-Tail Experts for Graph Neural Networks

41 citations · 82 across the 18 of their papers we have counts for

collaborators

19 papers

cs.CV2026

Why and When Visual Token Pruning Fails? A Study on Relevant Visual Information Shift in MLLMs Decoding

Jiwan Kim, Kibum Kim, Wonjoong Kim +2

Recently, visual token pruning has been studied to handle the vast number of visual tokens in Multimodal Large Language Models. However, we observe that while existing pruning meth…

cs.LG2026

Sink-Token-Aware Pruning for Fine-Grained Video Understanding in Efficient Video LLMs

Kibum Kim, Jiwan Kim, Kyle Min +4

Video Large Language Models (Video LLMs) incur high inference latency due to a large number of visual tokens provided to LLMs. To address this, training-free visual token pruning h…

cs.CV2025

CompoDistill: Attention Distillation for Compositional Reasoning in Multimodal LLMs

Jiwan Kim, Kibum Kim, Sangwoo Seo +1

Recently, efficient Multimodal Large Language Models (MLLMs) have gained significant attention as a solution to their high computational complexity, making them more practical for…

cs.AI2025★ 2 cited

IR-Agent: Expert-Inspired LLM Agents for Structure Elucidation from Infrared Spectra

Heewoong Noh, Namkyeong Lee, Gyoung S. Na +2

Spectral analysis provides crucial clues for the elucidation of unknown materials. Among various techniques, infrared spectroscopy (IR) plays an important role in laboratory settin…

cs.IR2025

Disentangling and Generating Modalities for Recommendation in Missing Modality Scenarios

Jiwan Kim, Hongseok Kang, Sein Kim +2

Multi-modal recommender systems (MRSs) have achieved notable success in improving personalization by leveraging diverse modalities such as images, text, and audio. However, two key…

cs.IR2025

Token-Efficient Item Representation via Images for LLM Recommender Systems

Kibum Kim, Sein Kim, Hongseok Kang +7

Large Language Models (LLMs) have recently emerged as a powerful backbone for recommender systems. Existing LLM-based recommender systems take two different approaches for represen…

cs.CV2025★ 1 cited

Weakly Supervised Video Scene Graph Generation via Natural Language Supervision

Kibum Kim, Kanghoon Yoon, Yeonjun In +4

Existing Video Scene Graph Generation (VidSGG) studies are trained in a fully supervised manner, which requires all frames in a video to be annotated, thereby incurring high annota…

cs.LG2025

Training Robust Graph Neural Networks by Modeling Noise Dependencies

Yeonjun In, Kanghoon Yoon, Sukwon Yun +3

In real-world applications, node features in graphs often contain noise from various sources, leading to significant performance degradation in GNNs. Although several methods have…

cs.CL2025

Is Safety Standard Same for Everyone? User-Specific Safety Evaluation of Large Language Models

Yeonjun In, Wonjoong Kim, Kanghoon Yoon +5

As the use of large language model (LLM) agents continues to grow, their safety vulnerabilities have become increasingly evident. Extensive benchmarks evaluate various aspects of L…

cs.IR2025

Lost in Sequence: Do Large Language Models Understand Sequential Recommendation?

Sein Kim, Hongseok Kang, Kibum Kim +6

Large Language Models (LLMs) have recently emerged as promising tools for recommendation thanks to their advanced textual understanding ability and context-awareness. Despite the c…

cs.CV2024

RA-SGG: Retrieval-Augmented Scene Graph Generation Framework via Multi-Prototype Learning

Kanghoon Yoon, Kibum Kim, Jaehyung Jeon +3

Scene Graph Generation (SGG) research has suffered from two fundamental challenges: the long-tailed predicate distribution and semantic ambiguity between predicates. These challeng…

cs.LG2024★ 7 cited

Debiased Graph Poisoning Attack via Contrastive Surrogate Objective

Kanghoon Yoon, Yeonjun In, Namkyeong Lee +2

Graph neural networks (GNN) are vulnerable to adversarial attacks, which aim to degrade the performance of GNNs through imperceptible changes on the graph. However, we find that in…

cs.CV2024

Semantic Diversity-aware Prototype-based Learning for Unbiased Scene Graph Generation

Jaehyeong Jeon, Kibum Kim, Kanghoon Yoon +1

The scene graph generation (SGG) task involves detecting objects within an image and predicting predicates that represent the relationships between the objects. However, in SGG ben…

cs.LG2024

Self-Guided Robust Graph Structure Refinement

Yeonjun In, Kanghoon Yoon, Kibum Kim +2

Recent studies have revealed that GNNs are vulnerable to adversarial attacks. To defend against such attacks, robust graph structure refinement (GSR) methods aim at minimizing the…

cs.CV2024★ 2 cited

Adaptive Self-training Framework for Fine-grained Scene Graph Generation

Kibum Kim, Kanghoon Yoon, Yeonjun In +3

Scene graph generation (SGG) models have suffered from inherent problems regarding the benchmark datasets such as the long-tailed predicate distribution and missing annotation prob…

cs.CV2023

LLM4SGG: Large Language Models for Weakly Supervised Scene Graph Generation

Kibum Kim, Kanghoon Yoon, Jaehyeong Jeon +4

Weakly-Supervised Scene Graph Generation (WSSGG) research has recently emerged as an alternative to the fully-supervised approach that heavily relies on costly annotations. In this…

cs.IR2023★ 28 cited

MELT: Mutual Enhancement of Long-Tailed User and Item for Sequential Recommendation

Kibum Kim, Dongmin Hyun, Sukwon Yun +1

The long-tailed problem is a long-standing challenge in Sequential Recommender Systems (SRS) in which the problem exists in terms of both users and items. While many existing studi…

cs.AI2022★ 1 cited

Unbiased Heterogeneous Scene Graph Generation with Relation-aware Message Passing Neural Network

Kanghoon Yoon, Kibum Kim, Jinyoung Moon +1

Recent scene graph generation (SGG) frameworks have focused on learning complex relationships among multiple objects in an image. Thanks to the nature of the message passing neural…

cs.LG2022★ 41 cited

LTE4G: Long-Tail Experts for Graph Neural Networks

Sukwon Yun, Kibum Kim, Kanghoon Yoon +1

Existing Graph Neural Networks (GNNs) usually assume a balanced situation where both the class distribution and the node degree distribution are balanced. However, in real-world si…