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Woomyoung Park

6 accepted papers

2025

Stop Learning it all to Mitigate Visual Hallucination, Focus on the Hallucination Target.

CVPR 2025poster

Multimodal Large Language Models (MLLMs) frequently suffer from hallucination issues, generating information about objects that are not present in input images during vision-language tasks. These hallucinations particularly undermine model reliability in practical applications requiring accurate obj…

Cited by 0SourcePDFScholar
2022

Building a Role Specified Open-Domain Dialogue System Leveraging Large-Scale Language Models

NAACL 2022long

Recent open-domain dialogue models have brought numerous breakthroughs. However, building a chat system is not scalable since it often requires a considerable volume of human-human dialogue data, especially when enforcing features such as persona, style, or safety. In this work, we study the challen…

2022

Keep Me Updated! Memory Management in Long-term Conversations

EMNLP 2022finding

Remembering important information from the past and continuing to talk about it in the present are crucial in long-term conversations. However, previous literature does not deal with cases where the memorized information is outdated, which may cause confusion in later conversations. To address this…

2022

On the Effect of Pretraining Corpora on In-context Learning by a Large-scale Language Model

NAACL 2022long

Many recent studies on large-scale language models have reported successful in-context zero- and few-shot learning ability. However, the in-depth analysis of when in-context learning occurs is still lacking. For example, it is unknown how in-context learning performance changes as the training corpu…

2021

GPT3Mix: Leveraging Large-scale Language Models for Text Augmentation

EMNLP 2021finding

Large-scale language models such as GPT-3 are excellent few-shot learners, allowing them to be controlled via natural text prompts. Recent studies report that prompt-based direct classification eliminates the need for fine-tuning but lacks data and inference scalability. This paper proposes a novel…

2021

What Changes Can Large-scale Language Models Bring? Intensive Study on HyperCLOVA: Billions-scale Korean Generative Pretrained Transformers

EMNLP 2021main

GPT-3 shows remarkable in-context learning ability of large-scale language models (LMs) trained on hundreds of billion scale data. Here we address some remaining issues less reported by the GPT-3 paper, such as a non-English LM, the performances of different sized models, and the effect of recently…