[11] CC-Loss: Channel Correlation Loss for Image Classification, S

Published in Jan 10, 2021

Recommended citation: Zeyu Song, Dongliang Chang, Zhanyu Ma\*, Xiaoxu Li, and Zheng-Hua Tan. CC-Loss: Channel Correlation Loss for Image Classification[c]. International Conference on Pattern Recognition (ICPR), 2020.

Abstract: The loss function is a key component in deep learning models. A commonly used loss function for classification is the cross entrophy loss, which is a simple yet effective application of information theory for classification problems. Based on this loss, many other loss functions have been proposed, e.g., by adding intra- and inter-class constraints to enhance the discriminative ability of the learned features. However, these loss functions fail to consider the connections between the feature distribution and the model structure. Aiming at addressing this problem, we propose a channel correlation loss (CC-Loss) that is able to constrain the specific relations between classes and channels as well as maintain the intra- and the inter-class separability. CC-Loss uses a channel attention module to generate channel attention of features for each sample in the training stage. Next, an Euclidean distance matrix is calculated to make the channel attention vectors associated with the same class become identical and to increase the difference between different classes. Finally, we obtain a feature embedding with good intra-class compactness and interclass separability. Experimental results show that two different backbone models trained with the proposed CC-Loss outperform the state-of-the-art loss functions on three image classification datasets.

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