Search Results for author: Xu Zhao

Found 27 papers, 9 papers with code

Konwledge-Enabled Diagnosis Assistant Based on Obstetric EMRs and Knowledge Graph

no code implementations CCL 2020 Kunli Zhang, Xu Zhao, Lei Zhuang, Qi Xie, Hongying Zan

In this paper, we treat the diagnosis assistant as a multi-label classification task and propose a Knowledge-Enabled Diagnosis Assistant (KEDA) model for the obstetric diagnosis assistant.

Disease Prediction Multi-Label Classification

Does Deep Learning REALLY Outperform Non-deep Machine Learning for Clinical Prediction on Physiological Time Series?

no code implementations11 Nov 2022 Ke Liao, Wei Wang, Armagan Elibol, Lingzhong Meng, Xu Zhao, Nak Young Chong

In this paper, we systematically examine the performance of machine learning models for the clinical prediction task based on the EHR, especially physiological time series.

Time Series

Transfering Low-Frequency Features for Domain Adaptation

no code implementations31 Aug 2022 Zhaowen Li, Xu Zhao, Chaoyang Zhao, Ming Tang, Jinqiao Wang

Previous unsupervised domain adaptation methods did not handle the cross-domain problem from the perspective of frequency for computer vision.

Image Classification object-detection +2

Improving Item Cold-start Recommendation via Model-agnostic Conditional Variational Autoencoder

1 code implementation27 May 2022 Xu Zhao, Yi Ren, Ying Du, Shenzheng Zhang, Nian Wang

This paper attempts to tackle the item cold-start problem by generating enhanced warmed-up ID embeddings for cold items with historical data and limited interaction records.

News Recommendation Recommendation Systems

ETAD: Training Action Detection End to End on a Laptop

1 code implementation14 May 2022 Shuming Liu, Mengmeng Xu, Chen Zhao, Xu Zhao, Bernard Ghanem

We propose to sequentially forward the snippet frame through the video encoder, and backward only a small necessary portion of gradients to update the encoder.

Action Detection Video Understanding

Learning-Based Framework for Camera Calibration with Distortion Correction and High Precision Feature Detection

1 code implementation1 Feb 2022 Yesheng Zhang, Xu Zhao, Dahong Qian

Therefore, in this paper, we propose a hybrid camera calibration framework which combines learning-based approaches with traditional methods to handle these bottlenecks.

Camera Calibration

Pruning-aware Sparse Regularization for Network Pruning

1 code implementation18 Jan 2022 Nanfei Jiang, Xu Zhao, Chaoyang Zhao, Yongqi An, Ming Tang, Jinqiao Wang

MaskSparsity imposes the fine-grained sparse regularization on the specific filters selected by a pruning mask, rather than all the filters of the model.

Network Pruning

Estimate Metabolite Taxonomy and Structure with a Fragment-Centered Database and Fragment Network

no code implementations11 Jan 2021 Hansen Zhao, Xu Zhao, Huan Yao, Jiaxin Feng, Sichun Zhang, Xinrong Zhang

Metabolite structure identification has become the major bottleneck of the mass spectrometry based metabolomics research.

Adaptive Tree Wasserstein Minimization for Hierarchical Generative Modeling

no code implementations1 Jan 2021 ZiHao Wang, Xu Zhao, Tam Le, Hao Wu, Yong Zhang, Makoto Yamada

In this work, we consider OT over tree metrics, which is more general than the sliced Wasserstein and includes the sliced Wasserstein as a special case, and we propose a fast minimization algorithm in $O(n)$ for the optimal Wasserstein-1 transport plan between two distributions in the tree structure.

Unsupervised Domain Adaptation

An End to End Network Architecture for Fundamental Matrix Estimation

no code implementations29 Oct 2020 Yesheng Zhang, Xu Zhao, Dahong Qian

In this paper, we present a novel end-to-end network architecture to estimate fundamental matrix directly from stereo images.

Semi-Supervised Bilingual Lexicon Induction with Two-way Interaction

1 code implementation EMNLP 2020 Xu Zhao, ZiHao Wang, Hao Wu, Yong Zhang

In this paper, we propose a new semi-supervised BLI framework to encourage the interaction between the supervised signal and unsupervised alignment.

Bilingual Lexicon Induction

Task Decoupled Knowledge Distillation For Lightweight Face Detectors

1 code implementation14 Oct 2020 Xiaoqing Liang, Xu Zhao, Chaoyang Zhao, Nanfei Jiang, Ming Tang, Jinqiao Wang

This method decouples the distillation task of face detection into two subtasks, i. e., the classification distillation subtask and the regression distillation subtask.

Face Detection Knowledge Distillation +1

A Relaxed Matching Procedure for Unsupervised BLI

no code implementations ACL 2020 Xu Zhao, ZiHao Wang, Hao Wu, Yong Zhang

Recently unsupervised Bilingual Lexicon Induction (BLI) without any parallel corpus has attracted much research interest.

Bilingual Lexicon Induction Translation

Parameter Sharing Decoder Pair for Auto Composing

no code implementations31 Oct 2019 Xu Zhao

Auto Composing is an active and appealing research area in the past few years, and lots of efforts have been put into inventing more robust models to solve this problem.

Multi-Granularity Fusion Network for Proposal and Activity Localization: Submission to ActivityNet Challenge 2019 Task 1 and Task 2

no code implementations29 Jul 2019 Haisheng Su, Xu Zhao, Shuming Liu

This technical report presents an overview of our solution used in the submission to ActivityNet Challenge 2019 Task 1 (\textbf{temporal action proposal generation}) and Task 2 (\textbf{temporal action localization/detection}).

Re-Ranking Temporal Action Proposal Generation

EdgeStereo: An Effective Multi-Task Learning Network for Stereo Matching and Edge Detection

no code implementations5 Mar 2019 Xiao Song, Xu Zhao, Liangji Fang, Hanwen Hu

EdgeStereo also achieves comparable generalization performance for disparity estimation because of the incorporation of edge cues.

Disparity Estimation Edge Detection +3

A Tangent Distance Preserving Dimensionality Reduction Algorithm

no code implementations4 Feb 2019 Xu Zhao, Zongli Jiang

TDPM uses tangent distance instead of geodesic distance, and then applies MDS to the tangent distance matrix to map the manifold into a low dimensional space in which we can get its nonlinear structure.

Dimensionality Reduction

Cascaded Pyramid Mining Network for Weakly Supervised Temporal Action Localization

no code implementations28 Oct 2018 Haisheng Su, Xu Zhao, Tianwei Lin

Weakly supervised temporal action localization, which aims at temporally locating action instances in untrimmed videos using only video-level class labels during training, is an important yet challenging problem in video analysis.

General Classification Video Classification +2

Discriminative Representation Combinations for Accurate Face Spoofing Detection

no code implementations27 Aug 2018 Xiao Song, Xu Zhao, Liangji Fang, Tianwei Lin

Secondly we utilize the SSD, which is a deep learning framework for detection, to excavate context cues and conduct end-to-end face presentation attack detection.

Face Presentation Attack Detection

BSN: Boundary Sensitive Network for Temporal Action Proposal Generation

16 code implementations ECCV 2018 Tianwei Lin, Xu Zhao, Haisheng Su, Chongjing Wang, Ming Yang

Temporal action proposal generation is an important yet challenging problem, since temporal proposals with rich action content are indispensable for analysing real-world videos with long duration and high proportion irrelevant content.

Action Detection Temporal Action Proposal Generation

EdgeStereo: A Context Integrated Residual Pyramid Network for Stereo Matching

no code implementations14 Mar 2018 Xiao Song, Xu Zhao, Hanwen Hu, Liangji Fang

Recent convolutional neural networks, especially end-to-end disparity estimation models, achieve remarkable performance on stereo matching task.

Disparity Estimation Edge Detection +2

Face Spoofing Detection by Fusing Binocular Depth and Spatial Pyramid Coding Micro-Texture Features

no code implementations13 Mar 2018 Xiao Song, Xu Zhao, Tianwei Lin

The second one is a high-level micro-texture based feature called Spatial Pyramid Coding Micro-Texture (SPMT) feature.

Single Shot Temporal Action Detection

2 code implementations17 Oct 2017 Tianwei Lin, Xu Zhao, Zheng Shou

The main drawback of this framework is that the boundaries of action instance proposals have been fixed during the classification step.

Action Detection General Classification

CoupleNet: Coupling Global Structure with Local Parts for Object Detection

3 code implementations ICCV 2017 Yousong Zhu, Chaoyang Zhao, Jinqiao Wang, Xu Zhao, Yi Wu, Hanqing Lu

To fully explore the local and global properties, in this paper, we propose a novel fully convolutional network, named as CoupleNet, to couple the global structure with local parts for object detection.

object-detection Object Detection +1

Joint Background Reconstruction and Foreground Segmentation via A Two-stage Convolutional Neural Network

no code implementations24 Jul 2017 Xu Zhao, Yingying Chen, Ming Tang, Jinqiao Wang

In the first stage, a convolutional encoder-decoder sub-network is employed to reconstruct the background images and encode rich prior knowledge of background scenes.

Temporal Convolution Based Action Proposal: Submission to ActivityNet 2017

no code implementations21 Jul 2017 Tianwei Lin, Xu Zhao, Zheng Shou

Our approach achieves the state-of-the-art performances on both temporal action proposal task and temporal action localization task.

Action Classification General Classification +1

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