Papers by Hyunwoo Park
SLM as Guardian: Pioneering AI Safety with Small Language Model (2024.emnlp-industry)
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Ohjoon Kwon, Donghyeon Jeon, Nayoung Choi, Gyu-Hwung Cho, Hwiyeol Jo, Changbong Kim, Hyunwoo Lee, Inho Kang, Sun Kim, Taiwoo Park
| Challenge: | Prior safety research on large language models focused on aligning them to safety requirements, but internalizing such safeguard features into larger models brought challenges of higher training cost and unintended degradation of helpfulness. |
| Approach: | They propose a multi-task learning mechanism that integrates harmful query detection and safeguard response into a single model. |
| Outcome: | The proposed approach outperforms the publicly available LLMs in harmful query detection and safeguard response generation. |
Taxonomy and Analysis of Sensitive User Queries in Generative AI Search System (2025.findings-naacl)
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Hwiyeol Jo, Taiwoo Park, Hyunwoo Lee, Nayoung Choi, Changbong Kim, Ohjoon Kwon, Donghyeon Jeon, Eui Hyeon Lee, Kyoungho Shin, Lim Sun Suk, Kyungmi Kim, Lee Jihye, Sun Kim
| Challenge: | generative LLMs have been used by industries for various purposes, but limited resources and limited experience hinder their deployment and maintenance. |
| Approach: | They propose a taxonomy for sensitive search queries and outline approaches to generating generative LLMs. |
| Outcome: | The proposed model can be used to analyze sensitive queries from real users. |
Generative Subgraph Retrieval for Knowledge Graph–Grounded Dialog Generation (2024.emnlp-main)
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| Challenge: | Existing methods for knowledge graph–grounded dialog generation fail to leverage the rich knowledge of pretrained language models. |
| Approach: | They propose a method for dialog generation that integrates dialog history with a knowledge graph. |
| Outcome: | The proposed method achieves state-of-the-art in knowledge graph–grounded dialog generation on OpenDialKG and KOMODIS datasets. |
ZeroDL: Zero-shot Distribution Learning for Text Clustering via Large Language Models (2025.findings-acl)
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| Challenge: | Large language models (LLMs) have shown impressive performance on downstream tasks, but if they cannot be fully described in prompts, they could fail to perform the task. |
| Approach: | They propose a method to contextualize a task toward a large language model (LLM) they use open-ended zero-shot inference from the entire dataset to aggregate the inference results and incorporate the aggregated meta-information for the actual task. |
| Outcome: | The proposed method improves text clustering tasks and improves on several datasets. |
ContractEval: A Benchmark for Evaluating Contract-Satisfying Assertions in Code Generation (2026.findings-acl)
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| Challenge: | Current evaluations measure functional correctness on well-formed inputs, but they filter out inputs that violate them. |
| Approach: | They propose a benchmark to evaluate whether generated code enforces preconditions . they use a neuro-symbolic pipeline to evaluate code with test cases . |
| Outcome: | The proposed benchmark aims to evaluate whether generated code enforces preconditions . it aims at achieving pass@k scores while ignoring those that violate them . |