Sang-Min Choi

Extracting Implicit User Preferences in Conversational Recommender Systems Using Large Language Models

2025 · Mathematics

Conversational recommender systems (CRSs) have garnered increasing attention for their ability to provide personalized recommendations through natural language interactions. Although large language models (LLMs) have shown potential in recommendation systems owing to their superior language …

Privacy-Preserving Argumentative Explanations (Student Abstract)

2026 · Proceedings of the AAAI Conference on Artificial Intelligence

We propose a framework for privacy-preserving argumentative explanations using homomorphic encryption. This method applies the Cheon-Kim-Kim-Song scheme, along with a soft k-means adapted for encrypted computation, to generate explanations without exposing sensitive data. By leveraging …