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- W4298054552 abstract "The development of unsupervised hashing is advanced by the recent popular contrastive learning paradigm. However, previous contrastive learning-based works have been hampered by (1) insufficient data similarity mining based on global-only image representations, and (2) the hash code semantic loss caused by the data augmentation. In this paper, we propose a novel method, namely Weighted Contrative Hashing (WCH), to take a step towards solving these two problems. We introduce a novel mutual attention module to alleviate the problem of information asymmetry in network features caused by the missing image structure during contrative augmentation. Furthermore, we explore the fine-grained semantic relations between images, i.e., we divide the images into multiple patches and calculate similarities between patches. The aggregated weighted similarities, which reflect the deep image relations, are distilled to facilitate the hash codes learning with a distillation loss, so as to obtain better retrieval performance. Extensive experiments show that the proposed WCH significantly outperforms existing unsupervised hashing methods on three benchmark datasets." @default.
- W4298054552 created "2022-10-01" @default.
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- W4298054552 date "2022-09-28" @default.
- W4298054552 modified "2023-10-15" @default.
- W4298054552 title "Weighted Contrastive Hashing" @default.
- W4298054552 doi "https://doi.org/10.48550/arxiv.2209.14099" @default.
- W4298054552 hasPublicationYear "2022" @default.
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