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4th International Conference on Emerging Intelligent Data and Web Technologies, EIDWT 2013

作者： Wang, Chundong Bo, Guangming Zhang, Yaohui Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin University of Technology Tianjin China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology Tianjin China

ISBN: (纸本)9780769550442

ESCP is short for Enterprise Social collaboration Platform. The ESCP system, which is also known as enterprise social networking, is a platform which translates the basic elements of the social networking and twitter into tools of productivity. For system security, authentication and authorization management should be on its priorities. It verifies user's identity effectively and allows authorized users to access protected resources stored in the service provider, and thus plays a role in access control. The basic authentication and the digest authentication are described, specifically this paper emphasizes design and implementation of the Form-based Authentication and the improved OAuth Authentication. Aiming at the problem of the granularity of authorization for the OAuth authentication method, improvement measures are proposed and implemented. © 2013 IEEE.

关键词： Authentication

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JPEG-Compatibility Steganalysis that Distinguishes Embedding Changes from Recompression Artifacts

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China Communications 2014年第9期11卷 173-182页

作者： MA Xiaojing LIU Jiaojiao ZOU Deqing JIN Hai Key Laboratory of Services Computing Technology and System Ministry of EducationSchool of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430000 Hubei Province P.R. China

JPEG-Compatibility steganalysis detects the presence of secret message embedded in the JPEG decompressed images and estimates the embedding rate. We propose a JPEG-Compatibility steganalysis algorithm that estimates the embedding rate based on the difference between the stego image and its recompression based predicted co-vet image. In particular, compression artifacts and embedding changes are distinguished based on the amplitude of pixel value changes. This is done independent of the embedding positions, thus is effective for both content non-adaptive and content adaptive steganography. In addition, we also improve the recompression prediction scheme to more accurately estimate the JPEG quantization table. Experimental results show that the proposed algorithm is significantly more effective in detecting spatial ±1 steganography across a wide range of quality factors and embedding rates, when compared to the previous works.

关键词： steganalysis JPEG-compatibility recompression artifacts

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Structural controllability of optimized networks with onion-like topologies

Structural controllability of optimized networks with onion-...

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Chinese Intelligent systems Conference, CISC 2018

作者： Li, Manli Sun, Shiwen Wu, Yafang Xia, Chengyi Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin University of Technology Tianjin300384 China Key Laboratory of Computer Vision and System Tianjin University of Technology Tianjin300384 China

ISBN: (纸本)9789811322877

Recently, an optimization method has been proposed to increase the ability of complex networks to resist intentional attacks on hub nodes. The finally optimized networks exhibit a novel type of "onion-like" structure. At the same time, structural controllability of complex networks also has been a hot research topic in recent years. Thus, structural controllability of "onion-like" networks deserves sufficient discussion. In this study, we explored the relationship between the attack robustness and structural controllability of scale-free networks before and after optimization. After implementing large quantity of numerical simulations, it has been found that the optimized scale-free networks have both increased robustness and enhanced structural controllability. Current research results can shed some light on the deep understanding of structural complexity and dynamical properties of real-world networked systems. © Springer Nature Singapore Pte Ltd. 2019.

关键词： Topology

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Fuzzy Granule Density-Based Outlier Detection with Multi-Scale Granular Balls

arXiv

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arXiv 2025年

作者： Gao, Can Tan, Xiaofeng Zhou, Jie Ding, Weiping Pedrycz, Witold The College of Computer Science and Software Engineering Shenzhen University Shenzhen518060 China Guangdong Key Laboratory of Intelligent Information Processing Shenzhen518060 China The National Engineering Laboratory for Big Data System Computing Technology Shenzhen University Shenzhen518060 China The School of Artificial Intelligence and Computer Science Nantong University Nantong226019 China The Faculty of Data Science City University of Macau Macau999078 China The Department of Electrical and Computer Engineering University of Alberta Edmonton Canada Systems Research Institute Polish Academy of Sciences Warsaw Poland The Department of Electrical and Computer Engineering King Abdulaziz University Jeddah Saudi Arabia The Department of Computer Engineering Istinye University Istanbul Turkey

Outlier detection refers to the identification of anomalous samples that deviate significantly from the distribution of normal data and has been extensively studied and used in a variety of practical tasks. However, most unsupervised outlier detection methods are carefully designed to detect specified outliers, while real-world data may be entangled with different types of outliers. In this study, we propose a fuzzy rough sets-based multi-scale outlier detection method to identify various types of outliers. Specifically, a novel fuzzy rough sets-based method that integrates relative fuzzy granule density is first introduced to improve the capability of detecting local outliers. Then, a multi-scale view generation method based on granular-ball computing is proposed to collaboratively identify group outliers at different levels of granularity. Moreover, reliable outliers and inliers determined by the three-way decision are used to train a weighted support vector machine to further improve the performance of outlier detection. The proposed method innovatively transforms unsupervised outlier detection into a semi-supervised classification problem and for the first time explores the fuzzy rough sets-based outlier detection from the perspective of multi-scale granular balls, allowing for high adaptability to different types of outliers. Extensive experiments carried out on both artificial and UCI datasets demonstrate that the proposed outlier detection method significantly outperforms the state-of-the-art methods, improving the results by at least 8.48% in terms of the Area Under the ROC Curve (AUROC) index. The source codes are released at https://***/Xiaofeng-Tan/MGBOD. © 2025, CC BY.

关键词： Granulation

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A Multi-Dimensional Assessment Model and Its Application in E-learning Courses of Computer Science 20

A Multi-Dimensional Assessment Model and Its Application in ...

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21st Annual Conference of the Special Interest Group in Information technology Education, SIGITE 2020

作者： Luo, Jiwen Lu, Feng Wang, Tao Key Lab. of Parallel and Distributed Computing College of Computer National University of Defense Technology Changsha China National Engineering Research Center for Big Data Technology and System Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9781450370455

Computer science is a practical discipline. It is always a great challenge to evaluate students' computer practice using computer-aided means for large scale students. We always need to address problems such as suspected plagiarism and deviation of the overall difficulty factor. In this paper, a multi-dimensional assessment model is designed for CS courses based on the detailed practice processing data in an E-learning system. The model comprehensively evaluates the students' learning process and results in three aspects of correctness, originality, and quality detection. Besides, the teacher can easily participate in the assessment according to their needs. The correctness is an essential requirement, and the originality is based on the clustering results of students' behaviors after clone detection to curb homework plagiarism. SonarQube is used to detect code quality and put forward higher requirements for codes. Manual participation intelligence has improved the flexibility and applicability of the model to a certain extent. We applied this model on the EduCoder online education platform and carried out a comprehensive analysis of 485 students in the Parallel Programming Principles and Practice Class of Huazhong University of Science and technology. Experiment results confirm the distinction, rationality, and fairness of the model in assessing student performance. It not only gives students a credible, comprehensive score in large-scale online practical programming courses but also gives teachers and students corresponding suggestions based on the evaluation results. Furthermore, the model can be extended to other online education platforms. © 2020 ACM.

关键词： Students

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Study on Price Transmission in China's Broiler Industry Chain Based on MCM

Study on Price Transmission in China's Broiler Industry Chai...

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The 2013 3rd International Conference on Photonics and Image in Agriculture Engineering (PIAGENG 2013)

作者： Xu Shiwei Dong Xiaoxia Li Zhemin Cui Liguo Kong Fantao Li Ganqiong Yu Haipeng Agricultural Information Institute of Chinese Academy of Agricultural Sciences Key Laboratory of Agri-information Services Technology Ministry of Agriculture Key Laboratory of Intelligent Agricultural Early Warning Technology and System of Chinese Academy of Agricultural Sciences

ISBN: (纸本)9780819495594

This paper studies price transmission mechanism of China's broiler industry chain with Market-chain Cooperated Model(MCM), according to the monthly price data of corn, broiler compound feed, broiler chicks, live chicken and eviscerated chicken from 1994 June to 2011 October. The result shows that the price system of China's broiler industry chain exists price transmission relationship, the price of representative products from upstream and midstream conducts obviously to downstream, and broiler compound feed price plays an important role in the price system. The result also indicates that the interior adjusting of broiler industry chain cannot guarantee that the entire price system recover to balance quickly. Therefore, the government needs to regulate timely the price system of broiler industry chain, especially the price change of feed and live broiler to maintain the price system relative stable.

关键词： broiler industry chain price transmission MCM

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Virtual resource monitoring in cloud computing

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Journal of Shanghai University(English Edition) 2011年第5期15卷 381-385页

作者：韩芳芳彭俊杰张武李青李建敦江钦龙袁勤 School of Computer Engineering and Science Shanghai University Key Laboratory of Computer System and Architecture Institute of Computing TechnologyChinese Academy of Science

Cloud computing is a new computing model. The resource monitoring tools are immature compared to traditional distributed computing and grid computing. In order to better monitor the virtual resource in cloud computing, a periodically and event-driven push （PEP） monitoring model is proposed. Taking advantage of the push and event-driven mechanism, the model can provide comparatively adequate information about usage and status of the resources. It can simplify the communication between Master and Work Nodes without missing the important issues happened during the push interval. Besides, we develop ＂mon＂ to make up for the deficiency of Libvirt in monitoring of virtual CPU and memory.

关键词： virtual resource monitoring cloud computing virtualization

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Common substructure extraction of proteins by geometric invariants

Common substructure extraction of proteins by geometric inva...

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10th International Conference on Computer-Aided Design and Computer Graphics

作者： Xu, Dong Li, Hua Gu, Tongjun Key Laboratory of Intelligent Information Processing Institute of Computing Technology Chinese Academy of Sciences Key Laboratory of Computer System and Architecture Institute of Computing Technology Chinese Academy of Sciences National Research Center for Intelligent Computing Systems Institute of Computing Technology Chinese Academy of Sciences Center for Systems Biology Institute of Biophysics Chinese Academy of Sciences Graduate University Chinese Academy of Sciences

ISBN: (纸本)9781424415786

Structure alignment could help to find shape similarities between proteins and guide structure classification and fold recognition. Common substructure detection and extraction are especially important, for which could guide the biologist to discover binding site or active site. We represent each segment of alpha-carbon backbone by using dihedral angles and curve moment invariants. Then, local and global structure alignment could be performed by iterative closest point algorithm. Maximum common substructures between a pair of proteins or within a protein could be found. Active sites also could be detected by the proposed algorithm.

关键词： Proteins

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Vision transformer-based stratification of pre/diabetic and pre/hypertensive patients from retinal photographs for 3PM applications

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EPMA Journal 2025年 1-15页

作者： Pushpanathan, Krithi Bai, Yang Lei, Xiaofeng Goh, Jocelyn Hui Lin Xue, Can Can Yew, Samantha Min Er Chee, Miaoli Quek, Ten Cheer Peng, Qingsheng Soh, Zhi Da Yu, Marco Chak Yan Zhou, Jun Wang, Yaxing Jonas, Jost B. Wang, Xiaofei Sim, Xueling Tai, E. Shyong Sabanayagam, Charumathi Goh, Rick Siow Mong Liu, Yong Cheng, Ching-Yu Tham, Yih-Chung Department of Ophthalmology Yong Loo Lin School of Medicine National University of Singapore Singapore Singapore Centre for Innovation and Precision Eye Health Yong Loo Lin School of Medicine National University of Singapore Singapore Singapore Institute of High Performance Computing (IHPC) Agency for Science Technology and Research (A*STAR) Singapore Singapore Singapore Eye Research Institute Singapore National Eye Centre Singapore Singapore Ophthalmology & Visual Sciences Academic Clinical Programme (EYE ACP) Duke-NUS Medical School Singapore Singapore Ophthalmology and Visual Science Key Lab Beijing Institute of Ophthalmology Beijing Tongren Eye Center Beijing Tongren Hospital Capital Medical University BeijingBeijing China Rothschild Foundation Hospital Institut Français de Myopie Paris France Key Laboratory of Biomechanics and Mechanobiology Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineering School of Biological Science and Medical Engineering Beihang University Beijing China Saw Swee Hock School of Public Health National University of Singaporeand National University Health System Singapore Singapore Duke-NUS Medical School Singapore Singapore Precision Health Research Singapore Singapore Department of Medicine Yong Loo Lin School of Medicine National University of Singapore Singapore Singapore

Objective: Diabetes and hypertension pose significant health risks, especially when poorly managed. Retinal evaluation though fundus photography can provide non-invasive assessment of these diseases, yet prior studies focused on disease presence, overlooking control statuses. This study evaluated vision transformer (ViT)-based models for assessing the presence and control statuses of diabetes and hypertension from retinal images. Methods: ViT-based models with ResNet-50 for patch projection were trained on images from the UK Biobank (n = 113,713) and Singapore Epidemiology of Eye Diseases study (n = 17,783), and externally validated on the Singapore Prospective Study Programme (n = 7,793) and the Beijing Eye Study (n = 6064). Model performance was evaluated using the area under the receiver operating characteristic curve (AUROC) for multiple tasks: detecting disease, identifying poorly controlled and well-controlled cases, distinguishing between poorly and well-controlled cases, and detecting pre-diabetes or pre-hypertension. Results: The models demonstrated strong performance in detecting disease presence, with AUROC values of 0.820 for diabetes and 0.781 for hypertension in internal testing. External validation showed AUROCs ranging from 0.635 to 0.755 for diabetes, and 0.727 to 0.832 for hypertension. For identifying poorly controlled cases, the performance remained high with AUROCs of 0.871 (internal) and 0.655–0.851 (external) for diabetes, and 0.853 (internal) and 0.792–0.915 (external) for hypertension. Detection of well-controlled cases also yielded promising results for diabetes (0.802 [internal];0.675–0.838 [external]), and hypertension (0.740 [internal] and 0.675–0.807 [external]). In distinguishing between poorly and well-controlled disease, AUROCs were more modest with 0.630 (internal) and 0.512–0.547 (external) for diabetes, and 0.651 (internal) and 0.639–0.683 (external) for hypertension. For pre-disease detection, the models achieved AUROCs of 0.746

关键词： Deep learning Diabetes Health risk assessment Hypertension Improved individual outcomes Innovative screening programs Opportunistic screening Predictive Preventive Personalized Medicine (PPPM / 3PM) Preventable diseases Protection against health-to-disease transition Retinal image Risk stratification

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Wear rate leveling: Lifetime enhancement of PRAM with endurance variation

Wear rate leveling: Lifetime enhancement of PRAM with endura...

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作者： Dong, Jianbo Zhang, Lei Han, Yinhe Wang, Ying Li, Xiaowei Key Laboratory of Computer System and Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781450306362

The limited write endurance of phase change random access memory (PRAM) is one of the major obstacles for PRAM-based main memory. Wear leveling techniques were proposed to extend its lifetime by balancing writes traffic. Another important concern that need to be considered is endurance variation in PRAM chips. When different PRAM cells have distinct endurance, balanced writes will result in lifetime degradation due to the weakest cells. Instead of balancing writes traffic, in this paper we propose wear rate leveling (WRL), a variant of wear leveling, to balance wear rates (i.e., writes traffic/edudrance) of cells across the PRAM chip. After investigating writing behavior of applications and endurance variation, we propose an architecture-level WRL mechanism. Moreover, there is an important tradeoff between endurance improvement and swapping data volume. To co-optimize endurance and swapping, a novel algorithm, Max Hyper-weight Rematching, is proposed to maximize PRAM lifetime and minimize performance degradation. Experimental results show 19x endurance improvement to prior Wear Leveling © 2011 ACM.

关键词： Phase change memory

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