Papers by Ngoc Nguyen
Mixture-of-Personas Language Models for Population Simulation (2025.findings-acl)
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Ngoc Bui, Hieu Trung Nguyen, Shantanu Kumar, Julian Theodore, Weikang Qiu, Viet Anh Nguyen, Rex Ying
| Challenge: | Pretrained LLMs fail to capture behavioral diversity of target populations due to inherent variability across individuals and groups. |
| Approach: | They propose a probabilistic prompting method that aligns LLM responses with the target population. |
| Outcome: | Experiments show that the proposed method outperforms competing methods in alignment and diversity metrics. |
Re-weighting Tokens: A Simple and Effective Active Learning Strategy for Named Entity Recognition (2023.findings-emnlp)
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| Challenge: | Existing active learning approaches focus on information-rich sequences, reducing the need for expert annotation. |
| Approach: | They propose a re-weighting-based active learning strategy that assigns dynamic weights to individual tokens. |
| Outcome: | The proposed strategy improves on multiple corpora and validates its effectiveness. |