Papers by Yunsu Kim
Autoregressive Score Generation for Multi-trait Essay Scoring (2024.findings-eacl)
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| Challenge: | Existing holistic approaches to score essays using pre-trained BERT-based models are inefficient, leading to inferior qualities in data-scarce traits. |
| Approach: | They propose an autoregressive prediction of multi-trait scores using pre-trained T5 models. |
| Outcome: | The proposed model shows over 5% improvement in prompts and traits compared to previous models . |
Revisiting Early Detection of Sexual Predators via Turn-level Optimization (2025.naacl-long)
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| Challenge: | Existing methods to detect online grooming rely on chat-level risk labels and fail to identify optimal intervention points. |
| Approach: | They propose a speed control reinforcement learning strategy based on luring communication theory to capture the predator’s turn-level entrapment and a new reward function that balances the trade-off between speed and accuracy based upon the LCT. |
| Outcome: | The proposed method preempts online grooming while identifying optimal early intervention points. |
Explainable Multi-hop Question Generation: An End-to-End Approach without Intermediate Question Labeling (2024.lrec-main)
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| Challenge: | Existing models that generate complex questions do not explain reasoning process behind generated multi-hop questions. |
| Approach: | They propose an end-to-end question rewriting model that increases question complexity through sequential rewrite. |
| Outcome: | The proposed model generates complex questions that require multi-step reasoning over multiple documents. |
Effective Cross-lingual Transfer of Neural Machine Translation Models without Shared Vocabularies (P19-1)
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| Challenge: | Existing approaches to transfer a pretrained NMT model to a new, unrelated language without shared vocabularies are limited to cognate languages. |
| Approach: | They propose to transfer a pretrained NMT model to a new, unrelated language without shared vocabularies by using cross-lingual word embedding and injecting artificial noises. |
| Outcome: | The proposed methods outperform multilingual joint training by a large margin in five low-resource translation tasks. |
Evalverse: Unified and Accessible Library for Large Language Model Evaluation (2024.emnlp-demo)
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| Challenge: | Evalverse is a library that unifies disparate evaluation tools into a single, user-friendly framework. |
| Approach: | They propose to integrate existing evaluation frameworks into a single, user-friendly framework that enables individuals with limited knowledge of artificial intelligence to request LLM evaluations and receive detailed reports. |
| Outcome: | The proposed framework can be used by individuals with limited knowledge of artificial intelligence to request and receive LLM evaluations and receive detailed reports. |
Pivot-based Transfer Learning for Neural Machine Translation between Non-English Languages (D19-1)
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| Challenge: | Using parallel corpora, we train a single, direct NMT model for non-English language pairs. |
| Approach: | They propose three ways to increase the relation among source, pivot, and target languages in pre-training . they use additional adapter component to smoothly connect pre-trained encoder and decoder . |
| Outcome: | The proposed methods outperform multilingual models up to +2.6% BLEU in WMT 2019 French-German and German-Czech tasks. |
Adaptive Planning for Multi-Attribute Controllable Summarization with Monte Carlo Tree Search (2026.acl-long)
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| Challenge: | Controllable summarization is a form of outputs that tailors summaries to user-specified attributes. |
| Approach: | They propose an adaptive planning framework that reframes the task as planning the order of sequential attribute control with a customized Monte Carlo Tree Search. |
| Outcome: | The proposed framework surpasses LLM-based self-planning models and fine-tuned baselines in multi-attribute controllable summarization. |
Cross-lingual Back-Parsing: Utterance Synthesis from Meaning Representation for Zero-Resource Semantic Parsing (2024.emnlp-main)
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| Challenge: | Existing approaches to extend semantic parsing (SP) beyond English are challenging due to the complex slot alignment step after translation. |
| Approach: | They propose a method to enhance cross-lingual transfer for SP by utilizing mPLMs. |
| Outcome: | The proposed method synthesizes target language utterances from source meaning representations while maintaining high slot value alignment rates. |
DyPCL: Dynamic Phoneme-level Contrastive Learning for Dysarthric Speech Recognition (2025.naacl-long)
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| Challenge: | Existing studies have focused on data augmentation and feature extraction methods to improve dysarthric speech recognition. |
| Approach: | They propose a Dynamic Phoneme-level Contrastive Learning method which decomposes the speech utterance into phoneme segments for phoneme- level contrastive learning. |
| Outcome: | The proposed method outperforms baseline models and achieves an average 22.10% reduction in word error rate (WER) across the overall dysarthria group. |
Multi-Dimensional Optimization for Text Summarization via Reinforcement Learning (2024.acl-long)
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| Challenge: | Existing summarization methods target a specific dimension, resulting in poor quality summaries. |
| Approach: | They propose multi-objective reinforcement learning tailored to generate balanced summaries across all dimensions. |
| Outcome: | The proposed model achieves significant performance gains compared to baseline models on representative summarization datasets on four dimensions. |
MiLQ: Benchmarking IR Models for Bilingual Web Search with Mixed Language Queries (2025.emnlp-main)
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| Challenge: | Information Retrieval (IR) research on mixed-language queries remains sparse and outdated. |
| Approach: | They propose a test set for mixed-language queries that is realistic and preferred by bilingual speakers. |
| Outcome: | The proposed benchmarks show that multilingual IR models perform moderately on MiLQ and inconsistently across native, English, and mixed-language queries. |
Leveraging the Interplay between Syntactic and Acoustic Cues for Optimizing Korean TTS Pause Formation (2024.lrec-main)
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| Challenge: | despite recent advances in speech synthesis, the focus of research has been on high-resource languages like English. |
| Approach: | They propose a framework that incorporates modeling of syntactic and acoustic cues associated with pausing patterns. |
| Outcome: | The proposed framework generates natural speech even for longer and intricate out-of-domain sentences, despite training on short audio clips. |
Bring More Attention to Syntactic Symmetry for Automatic Postediting of High-Quality Machine Translations (2023.acl-short)
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| Challenge: | Existing APE systems are not good at handling high-quality MTs even for a language pair with abundant data resources, English–German. |
| Approach: | They propose a linguistically motivated method of regularization that encourages symmetric self-attention on the given MT. |
| Outcome: | The proposed method improves the state-of-the-art architecture’s APE quality for high-quality MTs. |
Exploring Iterative Controllable Summarization with Large Language Models (2026.findings-eacl)
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| Challenge: | Large language models (LLMs) excel at abstractive summarization tasks, but their ability to precisely control summary attributes remains underexplored. |
| Approach: | They propose a guide-to-explain framework for controllable summarization that enables the model to identify misaligned attributes in the initial draft and guides it to self-explan errors in the previous output. |
| Outcome: | The proposed framework generates well-adjusted summaries that satisfy the desired attributes with robust effectiveness while requiring surprisingly fewer iterations than other iterative approaches. |
Improving Unsupervised Word-by-Word Translation with Language Model and Denoising Autoencoder (D18-1)
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| Challenge: | Unsupervised learning of cross-lingual word embeddings has fundamental limitations in translating sentences. |
| Approach: | They propose a method to improve word-by-word translation of cross-lingual embeddings using monolingual corpora without any back-translation. |
| Outcome: | The proposed system surpasses state-of-the-art unsupervised translation systems without costly iterative training. |
Bel Esprit: Multi-Agent Framework for Building AI Model Pipelines (2025.acl-demo)
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| Challenge: | a single AI model is often insufficient for complex tasks, requiring integration of multiple models into pipelines . a conversational agent can build pipelines composed of diverse AI models based on user requirements . |
| Approach: | They propose a conversational agent that constructs AI model pipelines based on user requirements. |
| Outcome: | The proposed agent can build AI model pipelines from human-curated and synthetic data. |
Cross-lingual Transfer for Automatic Question Generation by Learning Interrogative Structures in Target Languages (2024.emnlp-main)
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| Challenge: | Existing automatic question generation datasets focus on English, resulting in data gaps for other languages. |
| Approach: | They propose a cross-lingual transfer method that allows models to generate questions in low-resource languages. |
| Outcome: | The proposed method outperforms other models and achieves comparable performance across languages. |
Denoising Table-Text Retrieval for Open-Domain Question Answering (2024.lrec-main)
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| Challenge: | Existing studies in table-text open-domain question answering have problems with false-positive labels in training datasets. |
| Approach: | They propose a denoised table-text retriever that discards false positives from training datasets . they integrate table-level ranking information into the retriever to assist in finding evidence . |
| Outcome: | The proposed method outperforms baselines on retrieval recall and QA tasks. |
Prompt- and Trait Relation-aware Cross-prompt Essay Trait Scoring (2023.findings-acl)
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| Challenge: | Existing systems assume to grade essays on same prompt as used in training and assign only a holistic score. |
| Approach: | They propose a prompt- and trait relation-aware cross-prompt essay trait scorer that encodes prompt-awful essay representation by essay-promotion attention and utilizing the topic-coherence feature extracted by the topic model. |
| Outcome: | The proposed model shows state-of-the-art results for all prompts and traits. |
sDPO: Don’t Use Your Data All at Once (2025.coling-industry)
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| Challenge: | Large language models (LLMs) are increasingly requiring precision and accuracy in alignment tuning. |
| Approach: | They propose a stepwise DPO technique that partitions available preference datasets incrementally rather than utilizing entire dataset simultaneously. |
| Outcome: | The proposed technique improves the accuracy of reference models and the overall performance of the final model. |
When and Why is Document-level Context Useful in Neural Machine Translation? (D19-65)
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| Challenge: | Recent advances in document-level NMT focus on sophisticated integration of the context, explaining its improvement with only a few selected examples or targeted test sets. |
| Approach: | They extensively quantify the causes of improvements by a document-level model in general test sets, clarifying the limit of the usefulness of document- level context in NMT. |
| Outcome: | The proposed model is not interpretable as utilizing the context, and a long context is not helpful for NMT. |
DeRAGEC: Denoising Named Entity Candidates with Synthetic Rationale for ASR Error Correction (2025.findings-acl)
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| Challenge: | Recent studies have demonstrated that postprocessing speech recognition transcriptions with large language models can significantly enhance the accuracy of Automatic Speech Recognition (ASR). |
| Approach: | They propose a method to improve Named Entity (NE) correction in Automatic Speech Recognition systems by leveraging phonetic similarity and augmented definitions. |
| Outcome: | The proposed method outperforms baseline methods on common voice and STOP datasets and achieves a 28% reduction in WER and NE hit ratio. |
Multi-Type Conversational Question-Answer Generation with Closed-ended and Unanswerable Questions (2022.aacl-short)
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| Challenge: | Conversational question answering (CQA) aims to answer a question based on a given passage and previous conversation. |
| Approach: | They propose a method to synthesize data for CQA with various question types . they propose 'hierarchical answerability classification' module that improves quality of synthetic data while acquiring unanswerable questions. |
| Outcome: | The proposed framework improves quality of synthetic data while acquiring unanswerable questions. |