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Summary of Triaug: Out-of-distribution Detection For Imbalanced Breast Lesion in Ultrasound, by Yinyu Ye et al.


TriAug: Out-of-Distribution Detection for Imbalanced Breast Lesion in Ultrasound

by Yinyu Ye, Shijing Chen, Dong Ni, Ruobing Huang

First submitted to arxiv on: 12 Feb 2024

Categories

  • Main: Computer Vision and Pattern Recognition (cs.CV)
  • Secondary: Artificial Intelligence (cs.AI); Machine Learning (cs.LG)

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Summary difficulty Written by Summary
High Paper authors High Difficulty Summary
Read the original abstract here
Medium GrooveSquid.com (original content) Medium Difficulty Summary
This paper proposes a novel framework for detecting out-of-distribution (OOD) breast ultrasound images, which is crucial for accurate diagnosis of breast lesions. Traditional models struggle with unseen classes in clinical reality, even when trained on substantial in-distribution data. The proposed framework, built upon a long-tailed OOD detection task, incorporates triplet state augmentation (TriAug) to improve ID classification accuracy while maintaining strong OOD detection performance. Additionally, the framework employs a balanced sphere loss to address class imbalance issues. Experimental results demonstrate that the model outperforms state-of-the-art OOD approaches in both ID classification (F1-score=42.12%) and OOD detection (AUROC=78.06%).
Low GrooveSquid.com (original content) Low Difficulty Summary
Imagine if doctors could accurately diagnose breast lesions using ultrasound images, even when they’ve never seen that type of lesion before. This is a big problem because different types of breast lesions have very different incidence rates. The authors of this paper came up with a new way to solve this issue by training a model to detect when an image doesn’t belong to any known category. They used special tricks like mixing up the images and focusing on one type of lesion at a time. When they tested their approach, it outperformed other methods for detecting unknown lesions. This could lead to more accurate diagnoses and better patient outcomes.

Keywords

* Artificial intelligence  * Classification  * F1 score