Papers by Sangryul Kim
Context Filtering with Reward Modeling in Question Answering (2025.coling-main)
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| Challenge: | Question Answering (QA) tasks require a mix of relevant and irrelevant information in these contexts to perform well. |
| Approach: | They propose a context filtering approach that removes non-essential details, summarizing crucial content through Reward Modeling. |
| Outcome: | The proposed approach outperforms baseline models in 6.8-folds. |
Leveraging LLM-Generated Schema Descriptions for Unanswerable Question Detection in Clinical Data (2025.coling-main)
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| Challenge: | Existing methods rely on model uncertainty but lack interpretability and data imbalance. |
| Approach: | They propose a lightweight model that predicts relevant database schemas to detect unanswerable questions, enhancing interpretability and addressing the data imbalance in binary classification tasks. |
| Outcome: | The proposed model improves interpretability and improves accuracy in binary classification tasks. |
Sightation Counts: Leveraging Sighted User Feedback in Building a BLV-aligned Dataset of Diagram Descriptions (2025.acl-long)
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| Challenge: | Existing studies show that direct generation of diagram descriptions is costly and biased against blind and low-vision (BLV) users. |
| Approach: | They ask sighted individuals to assess diagram descriptions generated by vision-language models . they use latent supervision to guide the models with latent inference . |
| Outcome: | The results show that visual descriptions generated by vision-language models are effective and useful to educators who are themselves BLV and teach visually impaired learners. |
Re3val: Reinforced and Reranked Generative Retrieval (2024.findings-eacl)
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| Challenge: | generative retrieval models encode pointers to information in a corpus as an index within the model’s parameters. |
| Approach: | They propose a generative retrieval model that leverages contextual information to rerank retrieved page titles and utilizes REINFORCE to maximize rewards generated by constrained decoding. |
| Outcome: | The proposed model can't be tuned for the downstream readers as decoding the page title is a non-differentiable operation. |
Learning to Insert [PAUSE] Tokens for Better Reasoning (2025.findings-acl)
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| Challenge: | Existing studies have explored incorporating special-purpose tokens into the training process to enhance reasoning capabilities. |
| Approach: | They propose a method for inserting dummy tokens consecutively just before reasoning steps to increase model effectiveness. |
| Outcome: | The proposed method outperforms fine-tuning and previous token insertion methods on multiple datasets and models. |
From Evidence to Belief: A Bayesian Epistemology Approach to Language Models (2025.naacl-long)
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| Challenge: | Existing studies on language models have focused on factual correctness and justification, but prior research has focused on the factual truth condition and justifier. |
| Approach: | They analyze language models’ responses and confidence using verbalized confidence, token probability, and sampling to examine their knowledge of Bayesian epistemology. |
| Outcome: | The language models that follow the Bayesian confirmation assumption with true evidence show varying performance depending on the degree of irrelevance, indicating they deviate from Bayes' assumptions. |