论文标题

用于医疗图像分类的张量网络

Tensor Networks for Medical Image Classification

论文作者

Selvan, Raghavendra, Dam, Erik B

论文摘要

随着机器学习工具的越来越多,诸如神经网络跨多个领域的采用,有趣的连接和与其他域概念的比较越来越亮起。在这项工作中,我们专注于张量网络的类别,在过去的二十年中,它一直是物理学家的工作马,用于分析量子多体系统。基于对机器学习的张量网络的最新兴趣,我们扩展了矩阵产品状态张量网络(可以将其解释为在指数高维空间中运行的线性分类器),以在医学图像分析任务中有用。我们专注于分类问题作为第一步,我们激励使用张量网络的使用,并使用经典图像域概念(例如图像的局部无序性)为2D图像提出适应。借助拟议的本地无序张量网络模型(Lotenet),我们表明张量网络能够达到与最先进的深度学习方法相媲美的性能。我们在两个公开可用的医学成像数据集上评估了该模型,并与相关基线方法相比,使用较少的模型超参数显示了较少的模型超参数和较少的计算资源。

With the increasing adoption of machine learning tools like neural networks across several domains, interesting connections and comparisons to concepts from other domains are coming to light. In this work, we focus on the class of Tensor Networks, which has been a work horse for physicists in the last two decades to analyse quantum many-body systems. Building on the recent interest in tensor networks for machine learning, we extend the Matrix Product State tensor networks (which can be interpreted as linear classifiers operating in exponentially high dimensional spaces) to be useful in medical image analysis tasks. We focus on classification problems as a first step where we motivate the use of tensor networks and propose adaptions for 2D images using classical image domain concepts such as local orderlessness of images. With the proposed locally orderless tensor network model (LoTeNet), we show that tensor networks are capable of attaining performance that is comparable to state-of-the-art deep learning methods. We evaluate the model on two publicly available medical imaging datasets and show performance improvements with fewer model hyperparameters and lesser computational resources compared to relevant baseline methods.

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