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A metric for composite service reusability analysis

A metric for composite service reusability analysis

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2010 ICSE Workshop on Emerging Trends in software Metrics, WETSoM 2010, in Conjunction with the 32nd ACM/IEEE International Conference on software engineering, ICSE 2010

作者： Khoshkbarforoushha, A. Jamshidi, P. Shams, F. Automated Software Engineering Research Group Electrical and Computer Engineering Faculty Shahid Beheshti University GC Tehran Iran

ISBN: (纸本)9781605589763

Reusability is one of the most prominent service principles that can reduce cost of solution ownership when design services for reuse. The concept of reuse is supported by and can enable a number of complementary service principles that makes its analysis complicated. However, well-engineered business capabilities could be encapsulates within a well-designed interface to produce more reusable composite services. There are several prescriptive guidelines help to ensure that your service candidates attain a balance of proper logic encapsulation and adherence to the standard description, but there is no quantitative metric to get ensured that a given composite service has and to what extent different versions of a composite service differ in reusability capability. This work is to propose a quantitative metric to measure the reusability of composite services. The approach is based on the analysis of Description and Logic Mismatch Probability of a composite service will be reused within potential solutions. By adopting this metric, service reusability analysis could be conduct quantitatively that leads to realize an optimized service-oriented solution in terms of its reusability. © 2010 ACM.

关键词： Reusability

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Method and system for detecting anomalous user behaviors: An ensemble approach 30

Method and system for detecting anomalous user behaviors: An...

引用

30th International Conference on software engineering and Knowledge engineering, SEKE 2018

作者： Xi, Xiangyu Zhang, Tong Zhao, Guoliang Duy, Dongdong Gao, Qing Zhao, Wen Zhang, Shikun School of Software and Microelectronics Peking University China National Engineering Research Center for Software Engineering Peking University China School of Electronics Engineering and Computer Science Peking University China Corporation China

ISBN: (纸本)1891706446

Malicious user behavior that does not trigger access violation or data leak alert is difficult to detect. Using the stolen login credentials, the intruder doing espionage will first try to stay undetected, silently collect data that he is authorized to access from the company network. This paper presents an overview of User Behavior Analytics Platform built to collect logs, extract features and detect anomalous users which may contain potential insider threats. Besides, a multi-Algorithms ensemble, combining OCSVM, RNN and Isolation Forest, is introduced. The experiment showed that the system with an ensemble of unsupervised anomaly detection algorithms can detect abnormal user behavior patterns. The experiment results indicate that OCSVM and RNN suffer from anomalies in the training set, and iF orest gives more false positives and false negatives, while the ensemble of three algorithms has great performance and achieves recall 96:55% and accuracy 91:24% on average. © 2018 Universitat zu Koln. All rights reserved.

关键词： Unsupervised learning

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Enhancing Ropes for Collaborative Text Editing

Enhancing Ropes for Collaborative Text Editing

引用

2023 Congress in computer Science, computer engineering, and Applied Computing, CSCE 2023

作者： Sandal, Semih Ovatman, Tolga Aselsan Inc Software Engineering Department Ankara Turkey Istanbul Technical University Department of Computer Engineering Istanbul Turkey

ISBN: (纸本)9798350327595

Rope is a tree-based data structure providing performance enhancements in string concatenation operations in applications such as text editors. Even though collaborative text editing has become one of the major applications in cloud environments, utilizing ropes in collaborative text editing is rarely discussed in current literature. In this study, we enhance the Rope data structure for collaborative text editing. Firstly we discuss possible issues that Ropes may suffer in collaborative text editing and propose enhancements that adapt Ropes to such environments. During this adaptation we pay special attention to keep Ropes' immutable nature for the insert operations and balance the tree by following AVL-tree-style and Red-Black-Tree-style methods. We also provide a performance comparison of those balancing approaches. In our results, it can be seen that the AVL-Rope and Red-Black-Rope are slower in the concatenation operation due to balancing, but faster in index search operation and insert operation than the unbalanced Rope. © 2023 IEEE.

关键词： Balanced trees Collaborative text editing Rope data structure String processing

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Chaos Based Pixel Scrambling Algorithm Based On Corner Traversal 8

Chaos Based Pixel Scrambling Algorithm Based On Corner Trave...

引用

8th International Artificial Intelligence and Data Processing Symposium, IDAP 2024

作者： Ince, Cemile Ince, Kenan Hanbay, Davut Inönü University Computer Engineering Dept Malatya Turkey Inönü University Software Engineering Dept. Malatya Turkey

ISBN: (纸本)9798331531492

Lightweight image encryption has become a critical area of cryptography, especially for resource-constrained devices like those used in the Internet of Things (IoT). Chaotic maps, known for their sensitivity to initial conditions, ergodicity, and seemingly random behavior, are commonly used in image encryption algorithms. These maps are employed in either a standalone or combined fashion during the diffusion or confusion stages of the encryption process. The high correlation between pixels in image data necessitates specialized algorithms. Pixel scrambling, or confusion, is a fundamental step in image encryption. It involves rearranging pixel positions to disrupt the correlation between neighboring pixel values. This study enhances the Corner Traversal algorithm, a pixel scrambling technique, by using chaotic maps to determine the algorithm parameters at each layer. This modification increases the nonlinearity of the encryption process. The results demonstrate that these improvements lead to a more secure encryption scheme compared to the original Corner Traversal algorithm. The performance of the enhanced algorithm is evaluated by comparing it to the original version. © 2024 IEEE.

关键词： Pixels

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Pattern-based trace correlation technique to compare software versions

Pattern-based trace correlation technique to compare softwar...

引用

3rd International Conference on Autonomous and Intelligent Systems, AIS 2012

作者： Idris, Maher Mehrabian, Ali Hamou-Lhadj, Abdelwahab Khoury, Richard Software Behaviour Analysis Lab. Electrical and Computer Engineering Concordia University Montréal QC Canada Department of Software Engineering Lakehead University Thunder Bay ON Canada

ISBN: (纸本)9783642313677

Understanding the behavioural aspects and functional attributes of an existing software system is an important enabler for many software engineering activities including software maintenance and evolution. In this paper, we focus on understanding the differences between subsequent versions of the same system. This allows software engineers to compare the implementation of software features in different versions of the same system so as to estimate the effort required to maintain and test new versions. Our approach consists of exercising the features under study, generate the corresponding execution traces, and compare them to uncover similarities and differences. We propose in this paper to compare feature traces based on their main behavioural patterns instead of a mere event-to-event mapping. Two trace correlation metrics are also proposed and which vary whether the frequency of the patterns is taken into account or not. We show the effectiveness of our approach by applying it to traces generated from an open source object-oriented system. © 2012 Springer-Verlag.

关键词： software testing

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Should Your 8-year-old Learn Coding? 14

Should Your 8-year-old Learn Coding?

引用

9th Workshop in Primary and Secondary Computing Education, WIPSCE 2014

作者： Duncan, Caitlin Bell, Tim Tanimoto, Steve Department of Computer Science and Software Engineering University of Canterbury Christchurch New Zealand Department of Computer Science and Engineering University of Washington SeattleWA United States

ISBN: (纸本)9781450332507

There has been considerable interest in teaching "coding" to primary school aged students, and many creative "Initial Learning Environments" (ILEs) have been released to encourage this. Announcements and commentaries about such developments can polarise opinions, with some calling for widespread teaching of coding, while others see it as too soon to have students learning industry-specific skills. It is not always clear what is meant by teaching coding (which is often used as a synonym for programming), and what the benefits and costs of this are. Here we explore the meaning and potential impact of learning coding/programming for younger students. We collect the arguments for and against learning coding at a young age, and review the initiatives that have been developed to achieve this (including new languages, school curricula, and teaching resources). This leads to a set of criteria around the value of teaching young people to code, to inform curriculum designers, teachers and parents. The age at which coding should be taught can depend on many factors, including the learning tools used, context, teacher training and confidence, culture, specific skills taught, how engaging an ILE is, how much it lets students explore concepts for themselves, and whether opportunities exist to continue learning after an early introduction. © 2014 Association for Computing Machinery. All rights reserved.

关键词： Students

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Quantisation design of multi-dimensional DCT for image coding

Quantisation design of multi-dimensional DCT for image codin...

引用

1999 IEEE Region 10 Conference, TENCON 1999

作者： Tan, D.M. Wu, H.R. School of Computer Science and Software Engineering Monash University Wellington Road VIC3168 Australia

ISBN: (纸本)0780357396

This paper presents data folding as a method for rearranging image data in a manner which allows the practical application of the DCT to expand beyond the third dimension. Additionally, the design of the quantisation matrix of a four-dimensional (4-D) DCT based on the human visual system (HVS) and rate-distortion (R-D) theory is presented. Preliminary tests of a hybrid coder utilising 4-D DCT has shown promise. © 1999 IEEE.

关键词： Image coding

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Identification of Opinion Leaders by Using Social Network Embedding 5

Identification of Opinion Leaders by Using Social Network Em...

引用

5th IEEE International Conference on computer and Communications, ICCC 2019

作者： Luo, Jiaxing Du, Yajun Li, Ruomiao Cheng, Fei Xihua University School of Computer and Software Engineering Chengdu China SichuanLewei Technology Chengdu China

ISBN: (纸本)9781728147437

On social network platforms, users who can greatly affect other users through their posts are called opinion leaders. The discovery of opinion leaders has great significance for precision advertising, social analysis and so on. In recent years, the development of network embedding technology is remarkable. Network embedding technology can spontaneously learn the potential similarity between nodes. Therefore, we try to integrate network embedding technology into the task of opinion leader detection. We design a method to encode the text information of social network, and represent the text content of each node as a vector. We then use the SNE (Social Network Embedding) model to compute the structure and textual similarity between network nodes to improve the PageRank algorithm. Our experiments show that SNE model combined with random walk framework has improvement over baseline. © 2019 IEEE.

关键词： Network embeddings

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FADE: Graph drawing, clustering, and visual abstraction 8th

引用

8th International Symposium on Graph Drawing, GD 2000

作者： Quigley, Aaron Eades, Peter Department of Computer Science and Software Engineering Univ. of Newcastle CallaghanNSW2308 Australia

ISBN: (纸本)3540415548

A fast algorithm(fade) for the 2D drawing, geometric clustering and multilevel viewing of large undirected graphs is presented. The algorithm is an extension of the Barnes-Hut hierarchical space decomposition method, which includes edges and multilevel visual abstraction. Compared to the original force directed algorithm, the time overhead is O(e + n log n) where n and e are the numbers of nodes and edges. The improvement is possible since the decomposition tree provides a systematic way to determine the degree of closeness between nodes without explicitly calculating the distance between each node. Different types of regular decomposition trees are introduced. The decomposition tree also represents a hierarchical clustering of the nodes, which improves in a graph theoretic sense as the graph drawing approaches a lower energy state. Finally, the decomposition tree provides a mechanism to view the hierarchical clustering on various levels of abstraction. Larger graphs can be represented more concisely, on a higher level of abstraction, with fewer graphics on screen. © Springer-Verlag Berlin Heidelberg 2001.

关键词： Clustering algorithms

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Energy-Saving mechanisms for delay and Disruption-Tolerant networks 4th

Energy-Saving mechanisms for delay and Disruption-Tolerant n...

引用

4th International Conference on computer engineering and Networks, CENet2014

作者： Feng, Yankun Bai, Xiangyu School of Computer Science School of Software Engineering Inner Mongolia University Hohhot010021 China

ISBN: (纸本)9783319111032

In recent years, a lot of studies have been devoted to make communications possible between the nodes in the disconnected network scenarios, such as delay-/disruption-tolerant network (DTN). However, many DTN scenarios rely on mobile devices with restricted energy capacity which would directly affect the lifetime and performance of the network composed by these devices. So we pay attention to the energy-saving mechanisms of DTN in this paper and introduce the architecture, theoretical basis, evaluation metrics, classification, and challenges of the energy-saving mechanism. Next, the main energy-saving mechanisms are compared;the research on the energy management for DTN is summarized and analyzed in this paper, and the open issues for future research are also pointed out to motivate new research and development in the energy management field of DTN. © Springer International Publishing Switzerland 2015.

关键词： Energy management

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