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Youcheng Huang

4 accepted papers

2025

Cross-model Transferability among Large Language Models on the Platonic Representations of Concepts

ACL 2025long

Understanding the inner workings of Large Language Models (LLMs) is a critical research frontier. Prior research has shown that a single LLM’s concept representations can be captured as steering vectors (SVs), enabling the control of LLM behavior (e.g., towards generating harmful content). Our work…

2025

LEGEND: Leveraging Representation Engineering to Annotate Safety Margin for Preference Datasets

AAAI 2025technical

The success of the reward model in distinguishing between responses with subtle safety differences depends critically on the high-quality preference dataset, which should capture the fine-grained nuances of harmful and harmless responses. This motivates the need to develop the datasets involving pre…

2022

Reconciliation of Pre-trained Models and Prototypical Neural Networks in Few-shot Named Entity Recognition

EMNLP 2022finding

Incorporating large-scale pre-trained models with the prototypical neural networks is a de-facto paradigm in few-shot named entity recognition. Existing methods, unfortunately, are not aware of the fact that embeddings from pre-trained models contain a prominently large amount of information regardi…

2021

TAT-QA: A Question Answering Benchmark on a Hybrid of Tabular and Textual Content in Finance

ACL 2021long

Hybrid data combining both tabular and textual content (e.g., financial reports) are quite pervasive in the real world. However, Question Answering (QA) over such hybrid data is largely neglected in existing research. In this work, we extract samples from real financial reports to build a new large-…