I am an assistant professor with Singapore Management University. Before that, I was a research assistant professor of Nanyang Technology University. I  also was a research fellow with NExT++, National University of Singapore (NUS). I received my Ph.D. in Computer Science from Tsinghua University in 2018. My research areas span natural language processing, knowledge graph and recommendation. My current interests are in knowledge-patched LLMs. Various part of my work have been published in top conferences, such as ACL, EMNLP, COLING and WWW, which recieved over 4,000 citations. Moreover, I have served as Senior Area Chair for AACL2022 and Area Chair for ACL2023, AACL2023, and CCL2023, (Senior) PC member for several conferences including EMNLP, NAACL, AAAI, IJCAI, and NeurIPs, and as reviewers for journals including TPAMI, and TKDE.

I am looking for highly motivated PhD students and other type of research staff, feel free to drop me your CV. 

SMU is ranked No. 48 in the broad AI category in CSRanking and No. 118 in Computer Science and Information System in QSRanking.

Publications [Google Scholar] [DBLP]

2024

• X-eval: Generalizable multi-aspect text evaluation via augmented instruction tuning with auxiliary evaluation aspects. Minqian Liu, Ying Shen, Zhiyang Xu, Yixin Cao, Eunah Cho, Vaibhav Kumar, Reza Ghanadan, Lifu Huang. NAACL 2024.

• Screening through a broad pool: Towards better diversity for lexically constrained text generation. Changsen Yuan, Heyan Huang, Yixin Cao, Qianwen Cao. Information Processing & Management.

• VEM^2L: an easy but effective framework for fusing text and structure knowledge on sparse knowledge graph completion. Tao He, Ming Liu, Yixin Cao, Meng Qu, Zihao Zheng, Bing Qin. Data Mining and Knowledge Discovery.

• Exploring & Exploiting High-Order Graph Structure for Sparse Knowledge Graph Completion. Tao He, Ming Liu, Yixin Cao, Zekun Wang, Zihao Zheng, Zheng Chu, Bing Qin. Frontiers of Computer Science

2023

• A Comprehensive Evaluation of Large Language Models on Legal Judgment Prediction. Ruihao Shui, Yixin Cao, Xiang Wang, Tat-Seng Chua. EMNLP Findings 2023.

• CoVariance-based Causal Debiasing for Entity and Relation Extraction. Lin Ren, Yongbin Liu, Yixin Cao, Chunping Ouyang. EMNLP Findings 2023.

• MolCA: Molecular Graph-Language Modeling with Cross-Modal Projector and Uni-Modal Adapter. Zhiyuan Liu, Sihang Li, Yanchen Luo, Hao Fei, Yixin Cao, Kenji Kawaguchi, Xiang Wang, Tat-Seng Chua. EMNLP 2023.

• Robust Prompt Optimization for Large Language Models Against Distribution Shifts. Moxin Li, Wenjie Wang, Fuli Feng, Yixin Cao, Jizhi Zhang, Tat-Seng Chua. EMNLP 2023.

• INTUITIVE OR DEPENDENT? INVESTIGATING LLMS’ ROBUSTNESS TO CONFLICTING PROMPTS. Jiahao Ying, Yixin Cao*, Kai Xiong, Yidong He, Long Cui, Yongbin Liu. Arxiv.

• Benchmarking Foundation Models with Language-Model-as-an-Examiner. Yushi Bai, Jiahao Ying, Yixin Cao, Xin Lv, Yuze He, Xiaozhi Wang, Jifan Yu, Kaisheng Zeng, Yijia Xiao, Haozhe Lyu, Jiayin Zhang, Juanzi Li, Lei Hou. NeurIPs 2023.

• Examining the Inter-Consistency of Large Language Models: An In-depth Analysis via Debate. Kai Xiong, Xiao Ding, Yixin Cao*, Ting Liu, Bing Qin. EMNLP Findings 2023.

• Large Language Model Is Not a Good Few-shot Information Extractor, but a Good Reranker for Hard Samples! Yubo Ma, Yixin Cao*, YongChing Hong, Aixin Sun. EMNLP Findings 2023.

• FollowupQG: Towards information-seeking follow-up question generation. Yan Meng, Liangming Pan, Yixin Cao and Min-Yen Kan. AACL 2023.

• Constructing Holistic Spatio-Temporal Scene Graph for Video Semantic Role Labeling. Yu Zhao, Hao Fei, Yixin Cao, Bobo Li, Meishan Zhang, Jianguo Wei, Min Zhang, Tat-Seng Chua. ACM MM2023.

• Context-aware Event Forecasting via Graph Disentanglement. Yunshan Ma, Chenchen Ye, Zijian Wu, Xiang Wang, Yixin Cao, and Tat-Seng Chua. KDD2023.

• Document-level Relation Extraction via Separate Relation Representation and Logical Reasoning. Heyan Huang, Changsen Yuan, Qian Liu, and Yixin Cao. TOIS2023.

• Information Screening whilst Exploiting! Multimodal Relation Extraction with Feature Denoising and Multimodal Topic Modeling. Shengqiong Wu, Hao Fei, Yixin Cao, Lidong Bing and Tat-Seng Chua. ACL2023. Best Paper nomination.

• Discriminative Reasoning with Sparse Event Representation for Document-level Event-Event Relation Extraction. Changsen Yuan, Heyan Huang, Yixin Cao and Yonggang Wen. ACL2023.

• CHEER: Centrality-aware High-order Event Reasoning Network for Document-level Event Causality Identification. Meiqi Chen, Yixin Cao, Yan Zhang and Zhiwei Liu. ACL2023.

• Take a Break in the Middle: Investigating Subgoals towards Hierarhical Script Generation. Xinze Li, Yixin Cao*, Muhao Chen and Aixin Sun. Findings of ACL2023.

• Few-shot Event Detection: An Empirical Study and a Unified View. Yubo Ma, Zehao Wang, Yixin Cao* and Aixin Sun. ACL2023.

• Knowledge Graph Embedding by Normalizing Flows. Changyi Xiao, Xiangnan He, Yixin Cao. AAAI2023

2022

• R2F: A General Retrieval, Reading and Fusion Framework for Document-level Natural Language Inference. Hao Wang, Yixin Cao*, Yangguang Li, Zhen Huang, Kun Wang, Jing Shao. EMNLP2022

• ERGO: Event Relational Graph Transformer for Document-level Event Causality Identification. Meiqi Chen, Yixin Cao, Kunquan Deng, Mukai Li, Kun Wang, Jing Shao, Yan Zhang. COLING2022.

• ICLEA: Interactive Contrastive Learning for Self-supervised Entity Alignment. Kaisheng Zeng, Zhenhao Dong, Lei Hou, Yixin Cao, Minghao Hu, Jifan Yu, Xin Lv, Juanzi Li, Ling Feng. CIKM2022.

• TGDM: Target Guided Dynamic Mixup for Cross-Domain Few-Shot Learning. Linhai Zhuo, Yuqian Fu, Jingjing Chen, Yixin Cao, Yu-Gang Jiang. MM2022

• DocEE: A Large-Scale and Fine-grained Benchmark for Document-level Event Extraction. Meihan Tong, Bin Xu, Shuai Wang, Meihuan Han, Yixin Cao, Jiangqi Zhu, Siyu Chen, Lei Hou, Juanzi Li. NAACL2022.

• What Makes The Story Forward? Inferring Commonsense Explanations as Prompts for Future Event Generation. Lin Li, Yixin Cao*, Lifu Huang, Shu'ang Li, Lijie Wen. SIGIR2022.

• MMEKG: Multi-modal Event Knowledge Graph towards Universal Representation across Modalities. Yubo Ma†, Zehao Wang†, Mukai Li†, Yixin Cao†*, Meiqi Chen, Xinze Li, Wenqi Sun, Kunquan Deng, Kun Wang, Aixin Sun, Jing Shao. ACL2022 Demo.

• Do Pre-trained Models Benefit Knowledge Graph Completion? A Reliable Evaluation and a Reasonable Approach. Xin Lv, Yankai Lin, Yixin Cao, Lei Hou, Juanzi Li, Zhiyuan Liu, Peng Li, Jie Zhou. ACL2022 Finding.

• Prompt for Extraction? PAIE: Prompting Argument Interaction for Event Argument Extraction. Yubo Ma† , Zehao Wang† , Yixin Cao*, Mukai Li, Meiqi Chen, Kun Wang, Jing Shao. ACL2022.

• Debiasing NLU Models via Causal Intervention and Counterfactual Reasoning. Bing Tian, Yixin Cao, Yong Zhang, Chunxiao Xing. AAAI2022.

2021

• Missing Data Imputation for Solar Yield Prediction using Temporal Multi-Modal Variational Auto-Encoder. Meng Shen, Huaizheng Zhang, Yixin Cao, Fan Yang, Yonggang Wen. MM2021.

• Is Multi-Hop Reasoning Really Explainable? Towards Benchmarking Reasoning Interpretability. Xin Lv, Yixin Cao, Lei Hou, Juanzi Li, Zhiyuan Liu, Yichi Zhang, Zelin Dai. EMNLP2021.

• Learning Relation Prototype from Unlabeled Texts for Long-tail Relation Extraction. Yixin Cao, Kuang Jun, Ming Gao, Aoying Zhou, Yonggang Wen and Tat-Seng Chua. TKDE2021.

• Are Missing Links Predictable? An Inferential Benchmark for Knowledge Graph Completion. Yixin Cao, Xiang Ji, Xin Lv, Juanzi Li, Yonggang Wen and Hanwang Zhang. ACL2021.

• How does Knowledge Graph and Attention Help? A Qualitative Analysis into Bag-level Relation Extraction. Zikun Hu, Yixin Cao*, Lifu Huang and Tat-Seng Chua. ACL2021.

• Learning from Miscellaneous Other-Class Words for Few-shot Named Entity Recognition. Meihan Tong, Shuai Wang, Bin Xu, Yixin Cao, Minghui Liu, Lei Hou and Juanzi Li. ACL2021.

2020

• Tree-augmented Cross-Modal Encoding for Complex-Query Video Retrieval. Xun Yang, Jianfeng Dong, Yixin Cao, Xun Yang, Meng Wang and Tat-Seng Chua. SIGIR2020.

• Exploring and Evaluating Attributes, Values, and Structure for Entity Alignment. Zhiyuan Liu, Yixin Cao*, Liangming Pan, Juanzi Li, Zhiyuan Liu and Tat-Seng Chua. EMNLP2020.

• Expertise Style Transfer A New Task Towards Better Communication between Experts and Laymen. Yixin Cao, Ruihao Shui, Liangming Pan, Min-Yen Kan, Zhiyuan Liu and Tat-Seng Chua. ACL2020.

• Improving Event Detection via Open-domain Event Trigger Knowledge. Mei Han Tong, Shuai Wang, Yixin Cao*, Bin Xu, Lei Hou, Juanzi Li and Jun Xie. ACL2020.

• Reinforced Negative Sampling over Knowledge Graph for Recommendation. Xiang Wang, Yaokun Xu, Xiangnan He, Yixin Cao, Meng Wang and Tat-Seng Chua. WWW2020.

• Image Enchanced Event Detection in News Articles. Meihan Tong, Shuai Wang, Yixin Cao, Bin Xu, Juanzi Li, Lei Hou, Tat-Seng Chua. AAAI2020.

• DSEL: A Domain-specific Entity Linking System. Xinru Zhang, Huifang Xu, Yixin Cao*, Yuanpeng Tan, Lei Hou, Juanzi Li, Jiaxin Shi. JIST2020.

• Improving Neural Relation Extraction with Implicit Mutual Relations. Jun Kuang, Yixin Cao, Jianbing Zheng, Xiangnan He, Ming Gao, Aoying Zhou. ICDE2020.

2019

• Low-Resource Name Tagging Learned with Weakly Labeled Data. Yixin Cao, Zikun Hu, Tat-seng Chua, Zhiyuan Liu and Heng Ji. EMNLP2019.

• Semi-supervised Entity Alignment via Joint Knowledge Embedding Model and Cross-graph Model. Chengjiang Li, Yixin Cao*, Lei Hou, Jiaxin Shi, Juanzi Li and Tat-Seng Chua. EMNLP2019.

• Who, Where, and What to Wear? Extracting Fashion Knowledge from Social Media. Yunshan Ma, Xun Yang, Lizi Liao, Yixin Cao and Tat-seng Chua. MM2019.

• Personalized Fashion Recommendation with Visual Explanations based on Multimodal Attention Network: Towards Visually Explainable Recommendation. Xu Chen, Hanxiong Chen, Hongteng Xu, Yongfeng Zhang, Yixin Cao, Zheng Qin, Hongyuan Zha. SIGIR2019.

• Explainable reasoning over knowledge graphs for recommendation. Xiang Wang, Dingxian Wang, Canran Xu, Xiangnan He, Yixin Cao, Tat-Seng Chua. AAAI2019.

• Multi-Channel Graph Neural Network for Entity Alignment. Yixin Cao, Zhiyuan Liu, Chengjiang Li, Juanzi Li, Tat-Seng Chua. ACL2019.

• KGAT: Knowledge Graph Attention Network for Recommendation. Xiang Wang, Xiangnan He, Yixin Cao, Meng Liu, Tat-Seng Chua. KDD2019.

• Unifying Knowledge Graph Learning and Recommendation: Towards a Better Understanding of User Preferences. Yixin Cao, Xiang Wang, Xiangnan He, Zikun Hu, Tat-Seng Chua. WWW2019.

2018

• Joint Representation Learning of Cross-lingual Words and Entities via Attentive Distant Supervision. Yixin Cao, Lei Hou, Juanzi Li, Zhiyuan Liu, Chengjiang Li, Xu Chen, Tiansi Dong. EMNLP2018.

• Neural collective entity linking. Yixin Cao, Lei Hou, Juanzi Li, Zhiyuan Liu. COLING2018.

• Category Multi-Representation: A Unified Solution for Named Entity Recognition in Clinical Texts. Jiangtao Zhang, Juanzi Li, Shuai Wang, Yan Zhang, Yixin Cao, Lei Hou, Xiao-Li Li. PAKDD2018.

• Is a Common Phrase an Entity Mention or Not? Dual Representations for Domain-Specific Named Entity Recognition. Jiangtao Zhang, Juanzi Li, Xiao-Li Li, Yixin Cao, Lei Hou, Shuai Wang. DASFAA2018.

• Sequential recommendation with user memory networks. Xu Chen, Hongteng Xu, Yongfeng Zhang, Jiaxi Tang, Yixin Cao, Zheng Qin, Hongyuan Zha. WSDM2018.

2017

• On Modeling Sense Relatedness in Multi-prototype Word Embedding. Yixin Cao, Jiaxin Shi, Juanzi Li, Zhiyuan Liu, Chengjiang Li. IJCNLP2017.

• XLink: An unsupervised bilingual entity linking system. Jing Zhang, Yixin Cao, Lei Hou, Juanzi Li, Hai-Tao Zheng. CCL2017.

• Bridge text and knowledge by learning multi-prototype entity mention embedding. Yixin Cao, Lifu Huang, Heng Ji, Xu Chen, Juanzi Li. ACL2017.

2015

• Target Detection and Knowledge Learning for Domain Restricted Question Answering. Mengdi Zhang, Tao Huang, Yixin Cao, Lei Hou. NLPCC2015.

• Name list only? target entity disambiguation in short texts. Yixin Cao, Juanzi Li, Xiaofei Guo, Shuanhu Bai, Heng Ji, Jie Tang. EMNLP2015.

Invited Talk

Trustworthy NLP with knowledge guidance.

• Renmin University, USTC, Fudan University [slides]

• WSDM 2023 

Multi-modal Event Knowledge Graph [slides]

• CCKS 2022 invited talk

• Tsinghua University seminar

Introduction to Knowledge Graph [Slides]

• MITB AI seminar

Self-guided Universal Knowledge Graph Construction.  [Slides] 

• HIT, Oct, 2021

• UIUC, Sep, 2021

• SMU, Aug, 2021

Domain Specific Knowledge Graph Construction: Towards Wellness Applications

• NExT++ workshop, NUS, Singapore, 2019.

• 6Estates, Singapore, 2018.

Professional Services

Senior Area Chair: AACL 2022

Area Chair: ACL 2023, AACL 2023, CCL 2023

SI Chair: Artificial Intelligence Technology.

Local Chair: WSDM 2023

Editorial Board: Frontiers in Big Data

Senior Program Committee Member of IJCAI 2021

Program Committee Member of ICLR 2022.

Program Committee Member of ICML 2021.

Program Committee Member of WWW 2021, 2022.

Program Committee Member of AAAI 2020, 2021, 2022

Program Committee Member of NeurIPs 2020, 2021

Program Committee Member of COLING 2020.

Program Committee Member of EMNLP 2019, 2020, 2021

Program Committee Member of ACL 2019, 2020, 2021

Program Committee Member of NAACL 2019. 2020, 2021

Program Committee Member of CCKS 2019, 2020, 2021

Program Committee Member of NLPCC 2020, 2021

Program Committee Member of ICKG 2019.

Program Committee Member of IJCKG 2021.

Invited Reviewer of TPAMI, TACL, TKDE, TOIS, TASLP, TKDD, IEEE Access, Neural Computing.