Generalized zero-shot learning (GZSL) is a technique to train a deep learning model to identify unseen classes using the attribute. In this paper, we put forth a new GZSL technique that improves the GZSL classification performance greatly. Key idea of the proposed approach, henceforth referred to as semantic feature extraction-based GZSL (SE-GZSL), is to use the semantic feature containing only attribute-related information in learning the relationship between the image and the attribute. In doing so, we can remove the interference, if any, caused by the attribute-irrelevant information contained in the image feature. To train a network extracting the semantic feature, we present two novel loss functions, 1) mutual information-based loss to capture all the attribute-related information in the image feature and 2) similarity-based loss to remove unwanted attribute-irrelevant information. From extensive experiments using various datasets, we show that the proposed SE-GZSL technique outperforms conventional GZSL approaches by a large margin.

本文提出了一种新的基于语义特征提取的广义零样本学习（SE-GZSL）技术，使用包含仅属性相关信息的语义特征来学习图像和属性之间的关系，从而可以消除由图像特征中包含的与属性无关的干扰信息，通过使用提出的互信息损失和相似性损失函数，证明了该SE-GZSL技术在各种数据集中均优于传统的GZSL方法。

泛零样本学习的语义特征提取