检索结果-内蒙古大学图书馆

6th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2009

作者： Tang, Shugang School of Computer and Communication Engineering Tianjin University of Technology Tianjin 300191 China Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin 300191 China

ISBN: (纸本)9780769537351

Trojan horse is a serious security threat to computer network. Traditionally, Trojan Horses are detected using file's dynamic characteristics or behaviors. However, these methods are not available for unknown or un-awakened Trojan horses. Trojan horse always exists as PE (Portable Executable) file format in the Windows system environment, and the PE file has many static characteristics, which contains many runtime characteristics. In this paper, a new detecting method based on PE file's static attributes is proposed, and intelligent information processing techniques are used to analyze those static attributes, such as decision tree, BP network and Finite State Machine. Further, a detection model is established to estimate whether a PE file is a Trojan horse. This thesis is prepared to value the static Trojan characteristic and build a new way to detect the Trojan horse by using the PE file static characteristics. © 2009 IEEE.

关键词： Data mining

来源：评论

学校读者我要写书评

暂无评论

Research on ultra-dependable embedded real time operating system

Research on ultra-dependable embedded real time operating sy...

引用

2011 IEEE/ACM International Conference on Green computing and communications, GreenCom 2011

作者： Chen, Hui Yang, Shi Ping Shanghai Key Laboratory of Trustworthy Computing Software Engineering Institute East China Normal University Shanghai China Guangzhou Haige Communication Industry Group Guangzhou China

ISBN: (纸本)9780769544663

In this paper, to research and design ultra-dependable embedded real time operating system supporting security and safety, spatial and temporal isolation safeguard is proposed and used. Temporal isolation mechanism guarantees a subsystem can exclusively use a pre-allocated processing time without any intervention from other subsystem. On the other hand, spatial isolation implies that a subsystem cannot inadvertently access other subsystem's space resources, like memory, buffers, I/O ports, and registers. Thus, a subsystem is the owner of its resources, such as memory, I/O ports, and processor time units. From this, the real time tasks running in different subsystems never interfere with each other. To support the temporal isolation among subsystems, a two-level scheduling model is designed, which consists of a low-level cyclic schedule at the operating system level and high-level fixed priority schedule at subsystem level. Thus, a real time task in a subsystem can only be scheduled and executed during the static time window allocated to the subsystem, and any task overrun cannot cross the time window boundaries of subsystem. It is very easy to restrain a task time-failure within the subsystem with temporal isolation mechanism. In reference to spatial isolation safeguard, a based on hard currency and error holding mechanism is presented, it apply to most embedded modern processors with memory protection unit, such as i386sx, PowerPC. As a result, an ultra-dependable embedded RTOS supporting temporal and spatial isolation safeguard is implemented and verified. It is called ERTOS designed by software Engineering Institute of East China Normal University. © 2011 IEEE.

关键词： Embedded systems

来源：评论

学校读者我要写书评

暂无评论

Asymmetric Group key Agreement Protocol from Short Signatures 8

Asymmetric Group Key Agreement Protocol from Short Signature...

引用

8th IEEE International Conference on Computer and communications, ICCC 2022

作者： Shen, Kunyu Zhang, Lei Zhang, Rui Fang, Qihao Shanghai Key Laboratory of Trustworthy Computing Software Engineering Institute East China Normal University Shanghai200062 China Science and Technology on Communication Security Laboratory Sichuan Chengdu610041 China

ISBN: (纸本)9781665450515

Asymmetric group key agreement allows a group of users to negotiate a public encryption key that corresponds to several decryption keys, and each decryption key can only be computed by one group member. This novel notion ensures the confidentiality of communication among group members and allows any external entity to send messages to the group. However, the existing authenticated asymmetric group key agreement protocols are designed in identity-based cryptosystem or certificateless public key cryptosystem, which are not widely deployed. In this paper, we propose an efficient authenticated asymmetric group key agreement protocol. The protocol captures the security of secrecy, known-key security, key-compromise impersonation, unknown key-share and key control while being resistant to active attacks. The security of our protocol is reduced to the k-BDHE problem. © 2022 IEEE.

关键词： Public key cryptography

来源：评论

学校读者我要写书评

暂无评论

MPC-Based Privacy-Preserving Serverless Federated Learning 3

MPC-Based Privacy-Preserving Serverless Federated Learning

引用

3rd International Conference on Big Data, Artificial Intelligence and Internet of Things Engineering, ICBAIE 2022

作者： Zhong, Liangyu Zhang, Lei Xu, Lin Wang, Lulu East China Normal University Shanghai Key Laboratory of Trustworthy Computing Software Engineering Institute Shanghai200062 China Science and Technology on Communication Security Laboratory Sichuan Chengdu610041 China

ISBN: (数字)9781665451604

ISBN: (纸本)9781665451604

Federated learning (FL) enables multiple users to collaboratively train a global model by keeping their data sets local. Since a single server is used, traditional FL faces the single point of failure problem. An available approach is to adopt a serverless architecture. However, most of existing serverless FL schemes fail to protect gradient privacy, except for a few schemes that adopt differential privacy (DP) where the global model accuracy will decrease. To address these problems, we propose a privacy-preserving serverless FL scheme based on secure multiparty computation (MPC). Combining multiple cryptographic primitives (e.g., key agreement and symmetric encryption), our scheme protects gradient privacy in FL and it is accuracy-lossless. By secret sharing, our scheme supports users to quit an FL task in each round during training. © 2022 IEEE.

关键词： Privacy-preserving techniques

来源：评论

学校读者我要写书评

暂无评论

PR3D: Precise and realistic 3D face reconstruction from a single image

PR3D: Precise and realistic 3D face reconstruction from a si...

引用

作者： Huang, Zhangjin Wu, Xing University of Science and Technology of China Hefei China Anhui Province Key Laboratory of Software in Computing and Communication Hefei China Deqing Alpha Innovation Institute Huzhou China

Reconstructing the three-dimensional (3D) shape and texture of the face from a single image is a significant and challenging task in computer vision and graphics. In recent years, learning-based reconstruction methods have exhibited outstanding performance, but their effectiveness is severely constrained by the scarcity of available training data with 3D annotations. To address this issue, we present the PR3D (Precise and Realistic 3D face reconstruction) method, which consists of high-precision shape reconstruction based on semi-supervised learning and high-fidelity texture reconstruction based on StyleGAN2. In shape reconstruction, we use in-the-wild face images and 3D annotated datasets to train the auxiliary encoder and the identity encoder, encoding the input image into parameters of FLAME (a parametric 3D face model). Simultaneously, a novel semi-supervised hybrid landmark loss is designed to more effectively learn from in-the-wild face images and 3D annotated datasets. Furthermore, to meet the real-time requirements in practical applications, a lightweight shape reconstruction model called fast-PR3D is distilled through teacher–student learning. In texture reconstruction, we propose a texture extraction method based on face reenactment in StyleGAN2 style space, extracting texture from the source and reenacted face images to constitute a facial texture map. Extensive experiments have demonstrated the state-of-the-art performance of our method. © 2024 John Wiley & Sons Ltd.

关键词： Textures

来源：评论

学校读者我要写书评

暂无评论

IPRAR: A DFG-based approach to instruction clustering for multicluster VLIW DSP processor with SIMD structure

引用

Journal of Computational Information Systems 2014年第3期10卷 1257-1269页

作者： Yang, Yangzhao Gu, Naijie Zhao, Zeng Ren, Kaixin School of Computer Science and Technology University of Science and Technology of China Hefei 230027 China Anhui Province Key Laboratory of Computing and Communication Software Hefei 230027 China USTC and Loongson Technology Associated Laboratory Institute of Advanced Technology University of Science and Technology of China Hefei 230027 China

Modern Very Long Instruction (VLIW) DSP can improve performance by using instruction-level parallelism (ILP) and obtain better parallelism through instruction clustering. The essence of clustering is resource allocation. Traditional clustering method assumes that one instruction can only be assigned to a certain cluster, which is inapplicable to the architecture with SIMD structure. To address this issue, this paper presents IPRAR, a novel instruction clustering algorithm for the features of SIMD structure based on DFG. Due to considering the features of SIMD structure, IPRAR can be implemented on BWDSP100 with satisfactory. Besides, IPRAR can make the load of cluster more balanced and minimize the intercluster communication overload. Finally, numerous experiment results show that the IPRAR has an average of 7-10% performance improvement compared to the traditional methods. © 2014 Binary Information Press.

关键词： Clustering algorithms

来源：评论

学校读者我要写书评

暂无评论

An improved RBF network for predicting location in mobile network

An improved RBF network for predicting location in mobile ne...

引用

5th International Conference on Natural Computation, ICNC 2009

作者： Liu, Fenglian School of Computer and Communication Engineering Tianjin University of Technology Tianjin 300191 China Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin 300191 China

ISBN: (纸本)9780769537368

In mobile network, quality of service (Qos) is difficultly guaranteed for the particularity of mobile network. If the system knows, prior to the mobile subscriber movement, the exact trajectory it will follow, the Qos can be guaranteed. Thus, location prediction is the key issue to provide quality of service to mobile subscriber. In the present paper, RBF Network of Neural Network techniques were used to predict the mobile user's next location based on his current location as well as time. The software matlab 6.5 was used to confirm the parameters of RBF network, and to same training data, makes the detailed contrast with resilient propagation BP and BP in learning time and steps of learning. Experiment results show that predicted locations with RBF are more effective and accurate than resilient BP. © 2009 IEEE.

关键词： Radial basis function networks

来源：评论

学校读者我要写书评

暂无评论

引用

6th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2009

作者： Liu, Fenglian School of Computer and Communication Engineering Tianjin University of Technology Tianjin 300191 China Tianjin Key Laboratory of Intelligence Computing Novel Software Technology Tianjin 300191 China

ISBN: (纸本)9780769537351

This paper presents a novel similarity measure method based a combination of color and texture feature representations. In this method, the YIQ color space is chosen, because it can describe both color images and gray images and the transform from RGB to YIQ is linear and simple than other color space. In the proposed method, we firstly segment image using texture feature by combination of wavelet transform and texture co-occurrence matrix and then quantize color feature in YIQ color space for every segmentation partition. Based on image segmentation and color quantization, a new kind of similarity measure is proposed. Compared with the traditional image retrieval methods, the proposed method is very efficient for the image retrieval purpose. © 2009 IEEE.

关键词： Image retrieval

来源：评论

学校读者我要写书评

暂无评论

Performance optimization and evaluation of space management in cloud storage systems 15th

Performance optimization and evaluation of space management ...

引用

15th International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 2015

作者： Xu, Guangping Li, Huan Mao, Qunfang Lin, Sheng Zhang, Hua Tianjin Key Laboratory of Intelligence Computing and New Software Technology Tianjin300384 China Computer and Communication Engineering School Tianjin University of Technology Tianjin300384 China

ISBN: (纸本)9783319271392

Cloud service providers and enterprises usually deploy high performance storage to manage the unrelenting growth of data. In this paper, we focus on performance optimization and evaluation by using optimal regeneration codes in such cloud storage systems. We present an efficient data maintenance management framework to reduce network repair traffic with the minimum data movement while keeping the desired fault-tolerance in storage systems. In the management framework, it has two phases including the traditional erasure coding process and the optimal placement process. We formally represent the optimal placement as a variant of the bin packing problem by bipartite graphs. Then, we model the placement transform by the interchange graph and propose an efficient heuristic algorithm to find the optimal solution. All feasible solutions are linked together by interchange operation and thus the search space can be taken as an interchange graph. Finally, we evaluate the performance of the optimal placement during data maintenance with different practical settings in our experiments. The experimental results show that the amount of network repair traffic can be reduced by about 10% than the initial placement and by about 2X than traditional erasure coding placement. © Springer International Publishing Switzerland 2015.

关键词： Heuristic algorithms

来源：评论

学校读者我要写书评

暂无评论

Optimizing BLAS2 for a decoupled access/execute architecture processor

引用

Journal of Computational Information Systems 2014年第3期10卷 1231-1241页

作者： Zhao, Zeng Gu, Naijie Yang, Yangzhao Ren, Kaixin School of Computer Science and Technology University of Science and Technology of China Hefei 230027 China USTC and Loongson Technology Associated Laboratory Institute of Advanced Technology University of Science and Technology of China Hefei 230027 China Anhui Province Key Laboratory of Computing and Communication Software Hefei 230027 China

Basic Linear Algebra Subroutines (BLAS) is a widely used basic mathematical library for high-performance computing. It has a great impact on the performance of supercomputers. This paper focuses on memory accessing optimization for the level-2 library of BLAS (BLAS2) based on Godson-3B chips. The key contribution of this work is proposing several methods to make full use of the Godson-3B's hardware features, as well as to improve the performance of memory access. GEMV, the kernel function of BLAS2, is selected to demonstrate the optimization methods for Godson-3B. Using Single Instruction Multiple Data (SIMD) instructions, Direct Register Access (DRA) and Direct Cache Access (DCA) of Godson-3B, two optimization algorithms for GEMV are introduced in this paper. Experiments show that the best computing performance of the optimized GEMVs on Godson-3B is more than 1.8Gops, which is far superior to that of other versions. While the test scale of GEMVs is greater than the size of L2-cache, its average performance exceeds UBLAS and OpenBlas, the two most famous optimized BLAS libraries for GODSON, by more than 60% and 20% respectively. © 2014 Binary Information Press.

关键词： Supercomputers

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：