no code implementations • Findings (ACL) 2022 • Peixin Huang, Xiang Zhao, Minghao Hu, Yang Fang, Xinyi Li, Weidong Xiao
Secondly, we propose a hybrid selection strategy in the extractor, which not only makes full use of span boundary but also improves the ability of long entity recognition.
no code implementations • CoNLL (EMNLP) 2021 • Junxing Wang, Xinyi Li, Zhen Tan, Xiang Zhao, Weidong Xiao
A bidirectional attention mechanism is applied between the question sequence and the paths that connect entities, which provides us with transparent interpretability.
1 code implementation • 23 Oct 2024 • Ziyang Chen, Xiaobin Wang, Yong Jiang, Jinzhi Liao, Pengjun Xie, Fei Huang, Xiang Zhao
The naive RAG models, although effective in information retrieval, struggle with complex questions that require comprehensive and in-depth answers.
no code implementations • 16 Oct 2024 • Herun Wan, Minnan Luo, Zhixiong Su, Guang Dai, Xiang Zhao
To mitigate its negative impact, we propose three defense strategies from both the data and model sides, including machine-generated text detection, a mixture of experts, and parameter updating.
no code implementations • 21 Mar 2024 • Bingchen Liu, Huang Peng, Weixin Zeng, Xiang Zhao, Shijun Liu, Li Pan
MulCanon unifies the learning objectives of these sub-tasks, and adopts a two-stage multi-task learning paradigm for training.
1 code implementation • 15 Nov 2023 • Ziyang Chen, Dongfang Li, Xiang Zhao, Baotian Hu, Min Zhang
In this study, we address the challenge of enhancing temporal knowledge reasoning in Large Language Models (LLMs).
no code implementations • 25 Oct 2023 • Bingchen Liu, Shihao Hou, Weixin Zeng, Xiang Zhao, Shijun Liu, Li Pan
MulCanon unifies the learning objectives of diffusion model, KGE and clustering algorithms, and adopts a two-step multi-task learning paradigm for training.
no code implementations • 16 Aug 2023 • Bingxu Zhang, Changjun Fan, Shixuan Liu, Kuihua Huang, Xiang Zhao, Jincai Huang, Zhong Liu
Graph neural networks (GNNs) are effective machine learning models for many graph-related applications.
no code implementations • 2023 IEEE 39th International Conference on Data Engineering (ICDE) 2023 • Qianzhen Zhang, Deke Guo, Xiang Zhao, Long Yuan, Lailong Luo
However, this method will result in huge search space since we need to check every possible time interval for a candidate pattern in the temporal graph.
1 code implementation • 3 Jun 2023 • Yang Yang, Jin Lang, Jian Wu, Yanyan Zhang, Xiang Zhao
Finally, the effectiveness of the proposed method is verified by three wind prediction cases from a wind farm in Liaoning, China.
1 code implementation • CIKM 2022 • Aibo Guo, Xinyi Li, Guanchen Xiao, Zhen Tan, Xiang Zhao
We propose the first Text-to-CQL dataset, SpCQL, which contains one Neo4j graph database, 10, 000 manually annotated natural language queries and the matching Cypher queries (CQL).
no code implementations • 7 Jun 2021 • Hao Guo, Jiuyang Tang, Weixin Zeng, Xiang Zhao, Li Liu
To mitigate this problem, a viable approach is to integrate complementary knowledge from other MMKGs.
1 code implementation • 26 Jan 2021 • Weixin Zeng, Xiang Zhao, Jiuyang Tang, Xinyi Li, Minnan Luo, Qinghua Zheng
These preliminary results are regarded as the pseudo-labeled data and forwarded to the progressive learning framework to generate structural representations, which are integrated with the side information to provide a more comprehensive view for alignment.
1 code implementation • 5 Jan 2021 • Weixin Zeng, Xiang Zhao, Jiuyang Tang, Xuemin Lin, Paul Groth
Entity alignment (EA) is the task of identifying the entities that refer to the same real-world object but are located in different knowledge graphs (KGs).
no code implementations • COLING 2020 • Peixin Huang, Xiang Zhao, Ryuichi Takanobu, Zhen Tan, Weidong Xiao
Most existing work on event extraction (EE) either follows a pipelined manner or uses a joint structure but is pipelined in essence.
no code implementations • 7 Jul 2020 • Yang Fang, Xiang Zhao, Yifan Chen, Weidong Xiao, Maarten de Rijke
We propose a self-supervised pre-training and fine-tuning framework, PF-HIN, to capture the features of a heterogeneous information network.
1 code implementation • 25 May 2020 • Weixin Zeng, Xiang Zhao, Wei Wang, Jiuyang Tang, Zhen Tan
Entity alignment (EA) is to discover equivalent entities in knowledge graphs (KGs), which bridges heterogeneous sources of information and facilitates the integration of knowledge.
no code implementations • LREC 2020 • Weixin Zeng, Xiang Zhao, Jiuyang Tang, Zhen Tan, Xuqian Huang
Moreover, we devise a measure to evaluate the difficulty of documents with respect to entity linking, which is then used to characterize the corpus.
no code implementations • 13 Apr 2020 • Chao Zhang, Xiang Zhao, Kai Lin, Shaojun Zhang, Wen Zhao, Anzhong Wang
In particular, we find that, out of the five non-trivial field equations, only three are independent, so the problem is well-posed, as now generically there are only three unknown functions, {$F(r), B(r), A(r)$, where $F$ and $B$ are metric coefficients, and $A$ describes the aether field.}
General Relativity and Quantum Cosmology Astrophysics of Galaxies High Energy Physics - Phenomenology High Energy Physics - Theory
1 code implementation • 18 Dec 2019 • Weixin Zeng, Xiang Zhao, Jiuyang Tang, Xuemin Lin
Entity alignment (EA) identifies entities that refer to the same real-world object but locate in different knowledge graphs (KGs), and has been harnessed for KG construction and integration.
no code implementations • 3 Dec 2019 • Shifeng Liu, Yifang Sun, Bing Li, Wei Wang, Xiang Zhao
To tackle Named Entity Recognition (NER) tasks, supervised methods need to obtain sufficient cleanly annotated data, which is labor and time consuming.
no code implementations • AAAI-2019 2019 • Zhen Tan, Xiang Zhao, Wei Wang, Weidong Xiao
Triplets extraction is an essential and pivotal step in automatic knowledge base construction, which captures structural information from unstructured text corpus.
no code implementations • 13 Jun 2019 • Muhammad Asif Ali, Yifang Sun, Xiaoling Zhou, Wei Wang, Xiang Zhao
We hypothesize that the pre-trained embeddings comprehend a blend of lexical-semantic information and we may distill the task-specific information using Distiller, a model proposed in this paper.
1 code implementation • 21 Jan 2019 • Dongliang He, Xiang Zhao, Jizhou Huang, Fu Li, Xiao Liu, Shilei Wen
The task of video grounding, which temporally localizes a natural language description in a video, plays an important role in understanding videos.
1 code implementation • 6 Feb 2017 • Yifan Chen, Xiang Zhao
Top-$N$ recommender systems typically utilize side information to address the problem of data sparsity.
Information Retrieval
no code implementations • 27 Jun 2016 • Yifan Chen, Xiang Zhao, Junjiao Gan, Junkai Ren, Yang Fang
In this paper, we propose a content-based top-$N$ recommender system by learning the global term weights in profiles.