Search Results for author: Shiyi Wang

Found 11 papers, 3 papers with code

Make it more specific: A novel uncertainty based airway segmentation application on 3D U-Net and its variants

no code implementations12 Feb 2024 Shiyi Wang, Yang Nan, Felder Federico N, Sheng Zhang, Walsh Simon L F, Guang Yang

The most popular algorithms in medical segmentation, 3D U-Net and its variants, can directly implement the task of lung trachea segmentation, but its failure to consider the special tree-like structure of the trachea suggests that there is much room for improvement in its segmentation accuracy.

Segmentation

High Accuracy and Cost-Saving Active Learning 3D WD-UNet for Airway Segmentation

no code implementations9 Oct 2023 Shiyi Wang, Yang Nan, Simon Walsh, Guang Yang

We propose a novel Deep Active Learning (DeepAL) model-3D Wasserstein Discriminative UNet (WD-UNet) for reducing the annotation effort of medical 3D Computed Tomography (CT) segmentation.

Active Learning Computed Tomography (CT) +1

Post-COVID Highlights: Challenges and Solutions of AI Techniques for Swift Identification of COVID-19

no code implementations24 Sep 2023 Yingying Fang, Xiaodan Xing, Shiyi Wang, Simon Walsh, Guang Yang

Since the onset of the COVID-19 pandemic in 2019, there has been a concerted effort to develop cost-effective, non-invasive, and rapid AI-based tools.

A Novel Automated Classification and Segmentation for COVID-19 using 3D CT Scans

no code implementations4 Aug 2022 Shiyi Wang, Guang Yang

Medical image classification and segmentation based on deep learning (DL) are emergency research topics for diagnosing variant viruses of the current COVID-19 situation.

Computed Tomography (CT) Image Classification +4

Optimal transport for model calibration

no code implementations5 Jul 2021 Ivan Guo, Gregoire Loeper, Jan Obloj, Shiyi Wang

We provide a survey of recent results on model calibration by Optimal Transport.

Joint Modelling and Calibration of SPX and VIX by Optimal Transport

no code implementations5 Apr 2020 Ivan Guo, Gregoire Loeper, Jan Obloj, Shiyi Wang

This paper addresses the joint calibration problem of SPX options and VIX options or futures.

Calibration of Local-Stochastic Volatility Models by Optimal Transport

no code implementations15 Jun 2019 Ivan Guo, Gregoire Loeper, Shiyi Wang

In this paper, we study a semi-martingale optimal transport problem and its application to the calibration of Local-Stochastic Volatility (LSV) models.

HAKE: Human Activity Knowledge Engine

4 code implementations13 Apr 2019 Yong-Lu Li, Liang Xu, Xinpeng Liu, Xijie Huang, Yue Xu, Mingyang Chen, Ze Ma, Shiyi Wang, Hao-Shu Fang, Cewu Lu

To address these and promote the activity understanding, we build a large-scale Human Activity Knowledge Engine (HAKE) based on the human body part states.

Ranked #2 on Human-Object Interaction Detection on HICO (using extra training data)

Action Detection Human-Object Interaction Detection +1

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