Dongha Lee
4 papers in the PaperMetrix corpus
Papers by this author
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Evidence-Focused Fact Summarization for Knowledge-Augmented Zero-Shot Question Answering
2024
Recent studies have investigated utilizing Knowledge Graphs (KGs) to enhance Question Answering (QA) performance of Large Language Models (LLMs), yet structured KG verbalization remains challenging.Existing methods, such as triple-form or free-form textual conversion of triple-form …
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Stop Playing the Guessing Game! Target-free User Simulation for Evaluating Conversational Recommender Systems
2024 · arXiv (Cornell University)
Recent approaches in Conversational Recommender Systems (CRSs) have tried to simulate real-world users engaging in conversations with CRSs to create more realistic testing environments that reflect the complexity of human-agent dialogue. Despite the significant advancements, …
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Fast and Fluent Diffusion Language Models via Convolutional Decoding and Rejective Fine-tuning
2025
Autoregressive (AR) language models generate text one token at a time, which limits their inference speed. Diffusion-based language models offer a promising alternative, as they can decode multiple tokens in parallel. However, we identify a …
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Semi-Supervised Learning for Cross-Domain Recommendation to Cold-Start Users
2019
Providing accurate recommendations to newly joined users (or potential users, so-called cold-start users) has remained a challenging yet important problem in recommender systems. To infer the preferences of such cold-start users based on their preferences …