Search Results for author: Feng Xie

Found 21 papers, 10 papers with code

MixTEA: Semi-supervised Entity Alignment with Mixture Teaching

1 code implementation8 Nov 2023 Feng Xie, Xin Song, Xiang Zeng, Xuechen Zhao, Lei Tian, Bin Zhou, Yusong Tan

More importantly, in pseudo mapping learning, we propose a bi-directional voting (BDV) strategy that fuses the alignment decisions in different directions to estimate the uncertainty via the joint matching confidence score.

Entity Alignment

Generalized Independent Noise Condition for Estimating Causal Structure with Latent Variables

no code implementations13 Aug 2023 Feng Xie, Biwei Huang, Zhengming Chen, Ruichu Cai, Clark Glymour, Zhi Geng, Kun Zhang

To address this, we propose a Generalized Independent Noise (GIN) condition for linear non-Gaussian acyclic causal models that incorporate latent variables, which establishes the independence between a linear combination of certain measured variables and some other measured variables.

Improving Knowledge Graph Entity Alignment with Graph Augmentation

1 code implementation28 Apr 2023 Feng Xie, Xiang Zeng, Bin Zhou, Yusong Tan

Entity alignment (EA) which links equivalent entities across different knowledge graphs (KGs) plays a crucial role in knowledge fusion.

Entity Alignment Knowledge Graphs +2

FedScore: A privacy-preserving framework for federated scoring system development

1 code implementation1 Mar 2023 Siqi Li, Yilin Ning, Marcus Eng Hock Ong, Bibhas Chakraborty, Chuan Hong, Feng Xie, Han Yuan, Mingxuan Liu, Daniel M. Buckland, Yong Chen, Nan Liu

We also calculated the average AUC values and SDs for each local model, and the FedScore model showed promising accuracy and stability with a high average AUC value which was closest to the one of the pooled model and SD which was lower than that of most local models.

Federated Learning Model Selection +2

Zero-shot stance detection based on cross-domain feature enhancement by contrastive learning

no code implementations7 Oct 2022 Xuechen Zhao, Jiaying Zou, Zhong Zhang, Feng Xie, Bin Zhou, Lei Tian

In this work, we propose a stance detection approach that can efficiently adapt to unseen targets, the core of which is to capture target-invariant syntactic expression patterns as transferable knowledge.

Contrastive Learning Zero-Shot Stance Detection

Latent Hierarchical Causal Structure Discovery with Rank Constraints

no code implementations1 Oct 2022 Biwei Huang, Charles Jia Han Low, Feng Xie, Clark Glymour, Kun Zhang

Most causal discovery procedures assume that there are no latent confounders in the system, which is often violated in real-world problems.

Causal Discovery

EpiGNN: Exploring Spatial Transmission with Graph Neural Network for Regional Epidemic Forecasting

1 code implementation23 Aug 2022 Feng Xie, Zhong Zhang, Liang Li, Bin Zhou, Yusong Tan

Epidemic forecasting is the key to effective control of epidemic transmission and helps the world mitigate the crisis that threatens public health.

Inter- and Intra-Series Embeddings Fusion Network for Epidemiological Forecasting

1 code implementation23 Aug 2022 Feng Xie, Zhong Zhang, Xuechen Zhao, Bin Zhou, Yusong Tan

In Inter-Series Embedding Module, a multi-scale unified convolution component called Region-Aware Convolution is proposed, which cooperates with self-attention to capture dynamic dependencies between time series obtained from multiple regions.

Time Series Time Series Analysis

Benchmarking emergency department triage prediction models with machine learning and large public electronic health records

1 code implementation22 Nov 2021 Feng Xie, Jun Zhou, Jin Wee Lee, Mingrui Tan, Siqi Li, Logasan S/O Rajnthern, Marcel Lucas Chee, Bibhas Chakraborty, An-Kwok Ian Wong, Alon Dagan, Marcus Eng Hock Ong, Fei Gao, Nan Liu

In this paper, based on the Medical Information Mart for Intensive Care IV Emergency Department (MIMIC-IV-ED) database, we developed a publicly available benchmark suite for ED triage predictive models and created a benchmark dataset that contains over 400, 000 ED visits from 2011 to 2019.

Benchmarking

AutoScore-Imbalance: An interpretable machine learning tool for development of clinical scores with rare events data

1 code implementation13 Jul 2021 Han Yuan, Feng Xie, Marcus Eng Hock Ong, Yilin Ning, Marcel Lucas Chee, Seyed Ehsan Saffari, Hairil Rizal Abdullah, Benjamin Alan Goldstein, Bibhas Chakraborty, Nan Liu

All scoring models were evaluated on the basis of their area under the curve (AUC) in the receiver operating characteristic analysis and balanced accuracy (i. e., mean value of sensitivity and specificity).

Decision Making Interpretable Machine Learning +1

AutoScore-Survival: Developing interpretable machine learning-based time-to-event scores with right-censored survival data

1 code implementation13 Jun 2021 Feng Xie, Yilin Ning, Han Yuan, Benjamin Alan Goldstein, Marcus Eng Hock Ong, Nan Liu, Bibhas Chakraborty

We illustrated our method in a real-life study of 90-day mortality of patients in intensive care units and compared its performance with survival models (i. e., Cox) and the random survival forest.

BIG-bench Machine Learning Interpretable Machine Learning +1

Generalized Independent Noise Condition for Estimating Latent Variable Causal Graphs

no code implementations NeurIPS 2020 Feng Xie, Ruichu Cai, Biwei Huang, Clark Glymour, Zhifeng Hao, Kun Zhang

Despite its success in certain domains, most existing methods focus on causal relations between observed variables, while in many scenarios the observed ones may not be the underlying causal variables (e. g., image pixels), but are generated by latent causal variables or confounders that are causally related.

Causal Discovery

Causal Discovery with Multi-Domain LiNGAM for Latent Factors

no code implementations19 Sep 2020 Yan Zeng, Shohei Shimizu, Ruichu Cai, Feng Xie, Michio Yamamoto, Zhifeng Hao

In this paper, we propose Multi-Domain Linear Non-Gaussian Acyclic Models for Latent Factors (MD-LiNA), where the causal structure among latent factors of interest is shared for all domains, and we provide its identification results.

Causal Discovery

Triad Constraints for Learning Causal Structure of Latent Variables

no code implementations NeurIPS 2019 Ruichu Cai, Feng Xie, Clark Glymour, Zhifeng Hao, Kun Zhang

In this paper, by properly leveraging the non-Gaussianity of the data, we propose to estimate the structure over latent variables with the so-called Triad constraints: we design a form of "pseudo-residual" from three variables, and show that when causal relations are linear and noise terms are non-Gaussian, the causal direction between the latent variables for the three observed variables is identifiable by checking a certain kind of independence relationship.

Research on the pixel-based and object-oriented methods of urban feature extraction with GF-2 remote-sensing images

no code implementations8 Mar 2019 Dong-dong Zhang, Lei Zhang, Vladimir Zaborovsky, Feng Xie, Yan-wen Wu, Ting-ting Lu

During the rapid urbanization construction of China, acquisition of urban geographic information and timely data updating are important and fundamental tasks for the refined management of cities.

Classification General Classification +4

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