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- W2990560741 abstract "In network link prediction, it is possible to hide a target link from being predicted with a small perturbation on network structure. This observation may be exploited in many real world scenarios, for example, to preserve privacy, or to exploit financial security. There have been many recent studies to generate adversarial examples to mislead deep learning models on graph data. However, none of the previous work has considered the dynamic nature of real-world systems. In this work, we present the first study of adversarial attack on dynamic network link prediction (DNLP). The proposed attack method, namely time-aware gradient attack (TGA), utilizes the gradient information generated by deep dynamic network embedding (DDNE) across different snapshots to rewire a few links, so as to make DDNE fail to predict target links. We implement TGA in two ways: one is based on traversal search, namely TGA-Tra; and the other is simplified with greedy search for efficiency, namely TGA-Gre. We conduct comprehensive experiments which show the outstanding performance of TGA in attacking DNLP algorithms." @default.
- W2990560741 created "2019-12-05" @default.
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- W2990560741 date "2019-11-24" @default.
- W2990560741 modified "2023-09-23" @default.
- W2990560741 title "Time-aware Gradient Attack on Dynamic Network Link Prediction" @default.
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- W2990560741 doi "https://doi.org/10.48550/arxiv.1911.10561" @default.
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