Fan Xu


2023

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Leveraging Contrastive Learning and Knowledge Distillation for Incomplete Modality Rumor Detection
Fan Xu | Pinyun Fu | Qi Huang | Bowei Zou | AiTi Aw | Mingwen Wang
Findings of the Association for Computational Linguistics: EMNLP 2023

Rumors spread rapidly through online social microblogs at a relatively low cost, causing substantial economic losses and negative consequences in our daily lives. Existing rumor detection models often neglect the underlying semantic coherence between text and image components in multimodal posts, as well as the challenges posed by incomplete modalities in single modal posts, such as missing text or images. This paper presents CLKD-IMRD, a novel framework for Incomplete Modality Rumor Detection. CLKD-IMRD employs Contrastive Learning and Knowledge Distillation to capture the semantic consistency between text and image pairs, while also enhancing model generalization to incomplete modalities within individual posts. Extensive experimental results demonstrate that our CLKD-IMRD outperforms state-of-the-art methods on two English and two Chinese benchmark datasets for rumor detection in social media.

2020

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“细粒度英汉机器翻译错误分析语料库”的构建与思考(Construction of Fine-Grained Error Analysis Corpus of English-Chinese Machine Translation and Its Implications)
Bailian Qiu (裘白莲) | Mingwen Wang (王明文) | Maoxi Li (李茂西) | Cong Chen (陈聪) | Fan Xu (徐凡)
Proceedings of the 19th Chinese National Conference on Computational Linguistics

机器翻译错误分析旨在找出机器译文中存在的错误,包括错误类型、错误分布等,它在机器翻译研究和应用中起着重要作用。该文将人工译后编辑与错误分析结合起来,对译后编辑操作进行错误标注,采用自动标注和人工标注相结合的方法,构建了一个细粒度英汉机器翻译错误分析语料库,其中每一个标注样本包括源语言句子、机器译文、人工参考译文、译后编辑译文、词错误率和错误类型标注;标注的错误类型包括增词、漏词、错词、词序错误、未译和命名实体翻译错误等。标注的一致性检验表明了标注的有效性;对标注语料的统计分析结果能有效地指导机器翻译系统的开发和人工译员的后编辑。

2018

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Building Parallel Monolingual Gan Chinese Dialects Corpus
Fan Xu | Mingwen Wang | Maoxi Li
Proceedings of the Eleventh International Conference on Language Resources and Evaluation (LREC 2018)

2015

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Building Monolingual Word Alignment Corpus for the Greater China Region
Fan Xu | Xiongfei Xu | Mingwen Wang | Maoxi Li
Proceedings of the Joint Workshop on Language Technology for Closely Related Languages, Varieties and Dialects

2012

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A Unified Framework for Discourse Argument Identification via Shallow Semantic Parsing
Fan Xu | Qiaoming Zhu | Guodong Zhou
Proceedings of COLING 2012: Posters