Zhu Liu


2025

pdf bib
Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 4: Student Research Workshop)
Jin Zhao | Mingyang Wang | Zhu Liu
Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 4: Student Research Workshop)

pdf bib
JuniperLiu at CoMeDi Shared Task: Models as Annotators in Lexical Semantics Disagreements
Zhu Liu | Zhen Hu | Ying Liu
Proceedings of Context and Meaning: Navigating Disagreements in NLP Annotation

We present the results of our system for the CoMeDi Shared Task, which predicts majority votes (Subtask 1) and annotator disagreements (Subtask 2). Our approach combines model ensemble strategies with MLP-based and threshold-based methods trained on pretrained language models. Treating individual models as virtual annotators, we simulate the annotation process by designing aggregation measures that incorporate continuous relatedness scores and discrete classification labels to capture both majority and disagreement. Additionally, we employ anisotropy removal techniques to enhance performance. Experimental results demonstrate the effectiveness of our methods, particularly for Subtask 2. Notably, we find that standard deviation on continuous relatedness scores among different model manipulations correlates with human disagreement annotations compared to metrics on aggregated discrete labels. The code will be published at https://github.com/RyanLiut/CoMeDi_Solution

2007

pdf bib
The Multimodal Presentation Dashboard
Michael Johnston | Patrick Ehlen | David Gibbon | Zhu Liu
Proceedings of the Workshop on Bridging the Gap: Academic and Industrial Research in Dialog Technologies

2004

pdf bib
A System for Searching and Browsing Spoken Communications
Lee Begeja | Bernard Renger | Murat Saraclar | David Gibbon | Zhu Liu | Behzad Shahraray
Proceedings of the Workshop on Interdisciplinary Approaches to Speech Indexing and Retrieval at HLT-NAACL 2004

pdf bib
Interactive Machine Learning Techniques for Improving SLU Models
Lee Begeja | Bernard Renger | David Gibbon | Zhu Liu | Behzad Shahraray
Proceedings of the HLT-NAACL 2004 Workshop on Spoken Language Understanding for Conversational Systems and Higher Level Linguistic Information for Speech Processing