Search Results for author: Stephen O'Leary

Found 6 papers, 3 papers with code

Time Series Representation Learning with Supervised Contrastive Temporal Transformer

no code implementations16 Mar 2024 Yuansan Liu, Sudanthi Wijewickrema, Christofer Bester, Stephen O'Leary, James Bailey

We show that the model performs with high reliability and efficiency on the online CPD problem ($\sim$98\% and $\sim$97\% area under precision-recall curve respectively).

Change Point Detection Representation Learning +2

Time-Transformer: Integrating Local and Global Features for Better Time Series Generation

1 code implementation18 Dec 2023 Yuansan Liu, Sudanthi Wijewickrema, Ang Li, Christofer Bester, Stephen O'Leary, James Bailey

Experimental results demonstrate that our model can outperform existing state-of-the-art models in 5 out of 6 datasets, specifically on those with data containing both global and local properties.

Data Augmentation Time Series +1

Learning Non-Unique Segmentation with Reward-Penalty Dice Loss

1 code implementation23 Sep 2020 Jiabo He, Sarah Erfani, Sudanthi Wijewickrema, Stephen O'Leary, Kotagiri Ramamohanarao

Semantic segmentation is one of the key problems in the field of computer vision, as it enables computer image understanding.

Medical Image Segmentation Segmentation +1

Providing Effective Real-time Feedback in Simulation-based Surgical Training

no code implementations30 Jun 2017 Xingjun Ma, Sudanthi Wijewickrema, Yun Zhou, Shuo Zhou, Stephen O'Leary, James Bailey

Experimental results in a temporal bone surgery simulation show that the proposed method is able to extract highly effective feedback at a high level of efficiency.

Adversarial Generation of Real-time Feedback with Neural Networks for Simulation-based Training

no code implementations4 Mar 2017 Xingjun Ma, Sudanthi Wijewickrema, Shuo Zhou, Yun Zhou, Zakaria Mhammedi, Stephen O'Leary, James Bailey

It is the aim of this paper to develop an efficient and effective feedback generation method for the provision of real-time feedback in SBT.

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