Melanoma is one of the dangerous skin cancer worldwide. Manual detection generally takes more time and difficult to obtain accurate results due to various factors such as change in shape, size and color. In the recent...
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this paper investigates the integration of edge computing and Blockchain technologies within the context of digital transportation, focusing on the implementation of autonomous vehicle networks. By leveraging edge com...
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Recommender systems provide an effective solution to the problems of information overload and information insufficiency. the traditional collaborative filtering methods, however, suffer from cold start and sparsity pr...
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ISBN:
(纸本)9781665453288
Recommender systems provide an effective solution to the problems of information overload and information insufficiency. the traditional collaborative filtering methods, however, suffer from cold start and sparsity problems in the practical application of recommender systems. therefore, scholars have introduced auxiliary information to improve the performance of recommender systems. In some existing models, the feature vectors of user-item interaction information are not accurate enough. In this paper, we propose MKR-Bine, a graph neural network based recommendation model, which fully exploits user and item features by extracting user and item feature vectors using a bipartite graph neural network. Moreover, we use the knowledge graph as auxiliary information to improve the accuracy and interpretability of the recommender systems by learning higher-order interaction information between items and knowledge graph entities through cross- compression units. Finally, the performance of our proposed model is tested on the publicly available datasets of recommendation scenarios. the experimental results show that our model achieves significant benefits on real datasets, and the performance improvement is more obvious on sparse datasets.
Reentrancy attacks have been a significant threat to smart contracts on blockchain platforms. this attack allows an attacker to repeatedly call a vulnerable function in a contract, leading to unexpected behavior and l...
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For unmanned aerial vehicle-unmanned ground vehicle (UAV-UGV) systems with disturbances, this paper investigates the formation tracking issue under event-triggered communications. A hierarchical control strategy is pr...
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Automatic modulation classification (AMC) plays an indispensable role in wireless communicationsystems. Deep learning-based AMC has become the mainstream solution due to its high accuracy and no need for manual featu...
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ISBN:
(纸本)9781728190549
Automatic modulation classification (AMC) plays an indispensable role in wireless communicationsystems. Deep learning-based AMC has become the mainstream solution due to its high accuracy and no need for manual feature engineering. However, every coin has two sides. DL-based AMC is susceptible to adversarial perturbations, which are carefully crafted to be superimposed on the transmitted signals in an iteratively try- and-error manner, resulting in incorrect classification. In this paper, we propose a model diversity-based moving target defense mechanism (MD-MTD), which employs multiple classifiers and switches periodically, preventing intelligent attackers from deducing universal adversarial perturbations (UAP). Besides, to jointly optimize the robustness and accuracy of different AMC models to be trained, we design a novel multi-agent reinforcement learning (MARL) module. It is worth mentioning that the proposed algorithm significantly mitigates the curse of dimensionality during the large-scale training process via integrating value-decomposition networks and illegal action masking, improving the feasibility of our solution in real-world wireless communicationsystems. Experimental results on the GNU radio dataset also exhibit the remarkable advantages of our method in terms of convergence and defense performance.
Nursing faces challenges such as high workload, low job satisfaction, and poor communication in high-stress environments with strict hierarchies. these factors contribute to increased errors and conflicts. Information...
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Nuchal Translucency (NT) observed in ultrasound scans is widely utilized to identify genetic abnormalities in foetuses. However, NT measurements may be challenging to perform as a mainstay of prenatal screening. these...
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Traditional network measurement campaigns suffer from the lack of control over network infrastructure and the inability to evaluate communication performance directly, especially for the placement of highly distribute...
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