Social media, with its immediacy and convenience, has become an important channel for people to exchange information. However, this freedom of information dissemination also provides a breeding ground for the spread o...
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Graph neuralnetworks (GNN) have evolved as powerful models for graph representation learning. Many works have been proposed to support GNN training efficiently on GPU. However, these works only focus on a single GNN ...
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Graph neuralnetworks (GNN) have evolved as powerful models for graph representation learning. Many works have been proposed to support GNN training efficiently on GPU. However, these works only focus on a single GNN training task such as operator optimization, task scheduling, and programming model. Concurrent GNN training, which is needed in the applications such as neuralnetwork structure search, has not been explored yet. This work aims to improve the training efficiency of the concurrent GNN training tasks on GPU by developing fine-grained methods to fuse the kernels from different tasks. Specifically, we propose a fine-grained Sparse Matrix Multiplication (SpMM) based kernel fusion method to eliminate redundant accesses to graph data. In order to increase the fusion opportunity and reduce the synchronization cost, we further propose a novel technique to enable the fusion of the kernels in forward and backward propagation. Finally, in order to reduce the resource contention caused by the increased number of concurrent, heterogeneous GNN training tasks, we propose an adaptive strategy to group the tasks and match their operators according to resource contention. We have conducted extensive experiments, including kernel- and model-level benchmarks. The results show that the proposed methods can achieve up to 2.6X performance speedup.
In recent years, the frequent occurrence of phishing scams on Ethereum has posed serious threats to transaction security and the financial safety of users. This paper proposes an Ethereum phishing scam detection metho...
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Due to various limitations, such as limited power supply, the lack of storage capability and processing power, Internet of Things-based smart home networks have become vulnerable to various cyber-security attacks incl...
Due to various limitations, such as limited power supply, the lack of storage capability and processing power, Internet of Things-based smart home networks have become vulnerable to various cyber-security attacks including distributed Denial of Service (DDoS) attacks. These attacks are a malicious attempt to exhaust and overwhelm the target system resources, which has significant impact on the operation of smart home net- works. This paper proposes a novel, efficient and lightweight DDoS attack detection scheme in smart home networks, which employs artificial neuralnetworks (ANN) to classify smart home networks traffic into DDoS attacks or normal traffic. The proposed solution is evaluated on four datasets, namely, IoT-23, DS2OS, NUSW-NB15GT and CICDDOS2019. Experiments were conducted on two types of ANN models, i.e., Multilayered Perceptron (MLP) and Long- Short-Term Memory (LSTM), which achieved 99.78% and 99.98% accuracy, respectively.
In point cloud video recognition (PVR) tasks, deep neuralnetworks (DNNs) have been widely adopted to enhance accuracy. However, real-time processing is hindered due to the increasing volume of points and frames that ...
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In point cloud video recognition (PVR) tasks, deep neuralnetworks (DNNs) have been widely adopted to enhance accuracy. However, real-time processing is hindered due to the increasing volume of points and frames that require processes. Point clouds represent 3D-shaped discrete objects using a multitude of points. Consequently, these points often exhibit an uneven distribution in the view space, resulting in strong spatial similarity within each point cloud frame. Taking advantage of this observation, this article introduces PRADA, a Point Cloud Recognition Acceleration algorithm via Dynamic Approximation. PRADA approximates and eliminates the similar local pairs' computations and recovers their results by copying dissimilar local pairs' features for speedup with negligible accuracy loss. Furthermore, considering the slow changes in point cloud frames that lead to the high temporal similarity among points across multiple frames, we design PointV, a Point Cloud Video Recognition Acceleration algorithm, to minimize unnecessary computations of similar points in the temporal domain. Moreover, we propose the PRADA and PointV architectures to accelerate the PRADA and PointV algorithms. These two architectures can be integrated to gain higher performance improvement. Our experiments on a wide variety of datasets show that PRADA averagely achieves about 7 x speedup over 1080TI GPU. In addition, the experimental results show that the PointV architecture and the integrated architecture can respectively achieve 11.7x and 13.9x performance improvement with acceptable accuracy compared to the 1080TI GPU.
Due to the widespread application and economic value of smart contracts, they have become targets for attackers, leading to significant economic losses from vulnerabilities. Therefore, it is crucial to detect potentia...
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In this study, present a comprehensive analysis of detecting distributed Denial of Service (DDoS) attacks using advanced deep learning models, including a Deep neuralnetwork (DNN), Convolutional neuralnetwork (CNN),...
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Graph neuralnetworks (GNNs) arc used for graph data processing across various domains. Centralized training of GNNs often faces challenges due to privacy and regulatory issues, making federated learning (FL) a prefer...
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ISBN:
(纸本)9798350307887
Graph neuralnetworks (GNNs) arc used for graph data processing across various domains. Centralized training of GNNs often faces challenges due to privacy and regulatory issues, making federated learning (FL) a preferred solution in a distributed paradigm. However, GNNs may inherit biases from training data, causing these biases to propagate to the global model in distributed scenarios. To address this issue, we introduce F(2)GNN, a Fair Federated Graph neuralnetwork, to enhance group fairness. Recognizing that bias originates from both data and algorithms, F(2)GNN aims to mitigate both types of bias under federated settings. We offer theoretical insights into the relationship between data bias and statistical fairness metrics in GNNs. Building on our theoretical analysis, F(2)GNN features a fairness -aware local model update scheme and a fairness -weighted global model update scheme, considering both data bias and local model fairness during aggregation. Empirical evaluations show F(2)GNN outperforms SOTA baselines in fairness and accuracy.
Graphs are widely used to represent the relations among entities. When one owns the complete data, an entire graph can be easily built, therefore performing analysis on the graph is straightforward. However, in many s...
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Graphs are widely used to represent the relations among entities. When one owns the complete data, an entire graph can be easily built, therefore performing analysis on the graph is straightforward. However, in many scenarios, it is impractical to centralize the data due to data privacy concerns. An organization or party only keeps a part of the whole graph data, i.e., graph data is isolated from different parties. Recently, Federated Learning (FL) has been proposed to solve the data isolation issue, mainly for Euclidean data. It is still a challenge to apply FL on graph data because graphs contain topological information which is notorious for its non-IID nature and is hard to partition. In this work, we propose a novel FL framework for graph data, FedCog, to efficiently handle coupled graphs that are a kind of distributed graph data, but widely exist in a variety of real-world applications such as mobile carriers' communication networks and banks' transaction networks. We theoretically prove the correctness and security of FedCog. Experimental results demonstrate that our method FedCog significantly outperforms traditional FL methods on graphs. Remarkably, our FedCog improves the accuracy of node classification tasks by up to 14.7%.
The growing popularity of Deep neuralnetworks (DNNs) in a variety of domains, including computer vision, natural language processing, and predictive analytics, has led to an increase in the demand for computing resou...
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