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arXiv 2004.00909cs.LGcs.CVstat.ML
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具有层次标签的图像的学习表示

Learning Representations For Images With Hierarchical Labels

ETH Zurich(苏黎世联邦理工学院)

Ankit Dhall

摘要:

图像分类已被广泛研究,但在使用非传统的外部指导而不是传统的图像-标签对来训练这样的模型的方向上的工作有限。在这篇论文中,我们提出了一套方法来利用信息的语义层次结构引起的类标签。在论文的第一部分中,我们注入标签层次知识的任意分类器和经验表明,这种外部语义信息的可用性,结合图像的视觉语义提高整体性能。在这个方向上更进一步,我们使用在自然语言中流行的基于保序嵌入的模型来更明确地建模标签-标签和标签-图像交互,并将其定制到计算机视觉领域来执行图像分类。尽管在本质上形成对比,但注入分层信息的CNN分类器和基于嵌入的模型在新呈现的真实世界ETH昆虫学收集图像数据集https://www.research-collection.ethz.ch/handle/20.500.11850/365379上的表现优于分层不可知模型。

英文摘要:

Image classification has been studied extensively but there has been limited work in the direction of using non-conventional, external guidance other than traditional image-label pairs to train such models. In this thesis we present a set of methods to leverage information about the semantic hierarchy induced by class labels. In the first part of the thesis, we inject label-hierarchy knowledge to an arbitrary classifier and empirically show that availability of such external semantic information in conjunction with the visual semantics from images boosts overall performance. Taking a step further in this direction, we model more explicitly the label-label and label-image interactions by using order-preserving embedding-based models, prevalent in natural language, and tailor them to the domain of computer vision to perform image classification. Although, contrasting in nature, both the CNN-classifiers injected with hierarchical information, and the embedding-based models outperform a hierarchy-agnostic model on the newly presented, real-world ETH Entomological Collection image dataset https://www.research-collection.ethz.ch/handle/20.500.11850/365379.

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