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- W4386214668 abstract "Traditional Encrypted Traffic Classification (ETC) methods face a significant challenge in classifying large volumes of encrypted traffic in the open-world assumption, i.e., simultaneously classifying the known applications and detecting unknown applications. We propose a novel Open-World Contrastive Pre-training (OWCP) framework for this. OWCP performs contrastive pre-training to obtain a robust feature representation. Based on this, we determine the spherical mapping space to find the marginal flows for each known class, which are used to train GANs to synthesize new flows similar to the known parts but do not belong to any class. These synthetic flows are assigned to Softmax's unknown node to modify the classifier, effectively enhancing sensitivity towards known flows and significantly suppressing unknown ones. Extensive experiments on three datasets show that OWCP significantly outperforms existing ETC and generic open-world classification methods. Furthermore, we conduct comprehensive ablation studies and sensitivity analyses to validate each integral component of OWCP." @default.
- W4386214668 created "2023-08-29" @default.
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- W4386214668 date "2023-07-09" @default.
- W4386214668 modified "2023-10-17" @default.
- W4386214668 title "Facing Unknown: Open-World Encrypted Traffic Classification Based on Contrastive Pre-Training" @default.
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- W4386214668 doi "https://doi.org/10.1109/iscc58397.2023.10218269" @default.
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