Search Results for author: Xuezhi Cao

Found 10 papers, 6 papers with code

Table Fact Verification with Structure-Aware Transformer

no code implementations EMNLP 2020 Hongzhi Zhang, Yingyao Wang, Sirui Wang, Xuezhi Cao, Fuzheng Zhang, Zhongyuan Wang

Verifying fact on semi-structured evidence like tables requires the ability to encode structural information and perform symbolic reasoning.

Fact Verification

Entity-Aspect-Opinion-Sentiment Quadruple Extraction for Fine-grained Sentiment Analysis

no code implementations28 Nov 2023 Dan Ma, Jun Xu, ZongYu Wang, Xuezhi Cao, Yunsen Xian

To facilitate research in this new task, we have constructed four datasets (Res14-EASQE, Res15-EASQE, Res16-EASQE, and Lap14-EASQE) based on the SemEval Restaurant and Laptop datasets.

Aspect-Based Sentiment Analysis Aspect-Based Sentiment Analysis (ABSA) +1

A Wolf in Sheep's Clothing: Generalized Nested Jailbreak Prompts can Fool Large Language Models Easily

1 code implementation14 Nov 2023 Peng Ding, Jun Kuang, Dan Ma, Xuezhi Cao, Yunsen Xian, Jiajun Chen, ShuJian Huang

Finally, we analyze the failure of LLMs defense from the perspective of prompt execution priority, and propose corresponding defense strategies.

Exchanging-based Multimodal Fusion with Transformer

1 code implementation5 Sep 2023 Renyu Zhu, Chengcheng Han, Yong Qian, Qiushi Sun, Xiang Li, Ming Gao, Xuezhi Cao, Yunsen Xian

To solve these issues, in this paper, we propose a novel exchanging-based multimodal fusion model MuSE for text-vision fusion based on Transformer.

Image Captioning Multimodal Sentiment Analysis +3

Meta-Learning Triplet Network with Adaptive Margins for Few-Shot Named Entity Recognition

1 code implementation14 Feb 2023 Chengcheng Han, Renyu Zhu, Jun Kuang, FengJiao Chen, Xiang Li, Ming Gao, Xuezhi Cao, Wei Wu

We design an improved triplet network to map samples and prototype vectors into a low-dimensional space that is easier to be classified and propose an adaptive margin for each entity type.

few-shot-ner Few-shot NER +5

Adap-$τ$: Adaptively Modulating Embedding Magnitude for Recommendation

2 code implementations9 Feb 2023 Jiawei Chen, Junkang Wu, Jiancan Wu, Sheng Zhou, Xuezhi Cao, Xiangnan He

Recent years have witnessed the great successes of embedding-based methods in recommender systems.

Recommendation Systems

FFHR: Fully and Flexible Hyperbolic Representation for Knowledge Graph Completion

no code implementations7 Feb 2023 Wentao Shi, Junkang Wu, Xuezhi Cao, Jiawei Chen, Wenqiang Lei, Wei Wu, Xiangnan He

Specifically, they suffer from two main limitations: 1) existing Graph Convolutional Network (GCN) methods in hyperbolic space rely on tangent space approximation, which would incur approximation error in representation learning, and 2) due to the lack of inner product operation definition in hyperbolic space, existing methods can only measure the plausibility of facts (links) with hyperbolic distance, which is difficult to capture complex data patterns.

Knowledge Graph Completion Representation Learning

Popularity Bias Is Not Always Evil: Disentangling Benign and Harmful Bias for Recommendation

no code implementations16 Sep 2021 Zihao Zhao, Jiawei Chen, Sheng Zhou, Xiangnan He, Xuezhi Cao, Fuzheng Zhang, Wei Wu

To sufficiently exploit such important information for recommendation, it is essential to disentangle the benign popularity bias caused by item quality from the harmful popularity bias caused by conformity.

Recommendation Systems

DisenKGAT: Knowledge Graph Embedding with Disentangled Graph Attention Network

2 code implementations22 Aug 2021 Junkang Wu, Wentao Shi, Xuezhi Cao, Jiawei Chen, Wenqiang Lei, Fuzheng Zhang, Wei Wu, Xiangnan He

Knowledge graph completion (KGC) has become a focus of attention across deep learning community owing to its excellent contribution to numerous downstream tasks.

Disentanglement Graph Attention +1

Revealing Multiple Layers of Hidden Community Structure in Networks

2 code implementations23 Jan 2015 Kun He, Sucheta Soundarajan, Xuezhi Cao, John Hopcroft, Menglong Huang

Additionally, on both real and synthetic networks containing a hidden ground-truth community structure, HICODE uncovers this structure better than any baseline algorithms that we compared against.

Social and Information Networks Physics and Society

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