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检索条件"机构=Key Lab. of System Software and State Key Lab. of Computer Science"

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Test effectiveness index: Integrating product metrics with process metrics

Test effectiveness index: Integrating product metrics with p...

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2012 IEEE International Conference on Cyber Technology in Automation, Control, and Intelligent systems, CYBER 2012

作者： Zhang, Yan Zhao, Xuying Zhang, Xiaokun Zhang, Tian Department of Computer Science and Technology Beijing Electronic Science and Technology Institute Beijing 100070 China State Key Lab. for Novel Software Technology Nanjing University Nanjing 210093 China Department of Computer Science and Technology Nanjing University Nanjing 210093 China

ISBN: (纸本)9781467314213

Defect measurement is an important method in the improvement of software quality. Recent approaches of defect measurement are inappropriate to small software organizations by reason of their intricacy. This paper gives a simple approach of defect measurement, which integrates the power of product metrics with process metrics, i.e., it can not only detect the defect-prone modules, but also find the problems in the software process. This approach uses the results of successive two rounds of testing to create the test effectiveness index constructively. A case study is conducted and the results indicate that the defectprone modules can be identified and problems of testing process can be discovered by test effectiveness index. © 2012 IEEE.

关键词： Defects

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Independent domination on tree convex bipartite graphs

Independent domination on tree convex bipartite graphs

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6th International Frontiers of Algorithmics Workshop, FAW 2012 and 8th International Conference on Algorithmic Aspects of Information and Management, AAIM 2012

作者： Song, Yu Liu, Tian Xu, Ke Key Laboratory of High Confidence Software Technologies School of Electronic Engineering and Computer Science Peking University Beijing 100871 China National Lab. of Software Development Environment Beihang University Beijing 100191 China

ISBN: (纸本)9783642296994

An independent dominating set in a graph is a subset of vertices, such that every vertex outside this subset has a neighbor in this subset (dominating), and the induced subgraph of this subset contains no edge (independent). It was known that finding the minimum independent dominating set (Independent Domination) is -complete on bipartite graphs, but tractable on convex bipartite graphs. A bipartite graph is called tree convex, if there is a tree defined on one part of the vertices, such that for every vertex in another part, the neighborhood of this vertex is a connected subtree. A convex bipartite graph is just a tree convex one where the tree is a path. We find that the sum of larger-than-two degrees of the tree is a key quantity to classify the computational complexity of independent domination on tree convex bipartite graphs. That is, when the sum is bounded by a constant, the problem is tractable, but when the sum is unbounded, and even when the maximum degree of the tree is bounded, the problem is -complete. © 2012 Springer-Verlag.

关键词： Forestry

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Model driven configuration of fault tolerance solutions for component-based software system 12

Model driven configuration of fault tolerance solutions for ...

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15th International Conference on Model Driven Engineering Languages and systems, MODELS 2012

作者： Wu, Yihan Huang, Gang Song, Hui Zhang, Ying Key Lab. of High Confidence Software Technologies Ministry of Education China School of Electronic Engineering and Computer Science Peking University China Lero: the Irish Software Engineering Research Center Trinity College Dublin Ireland

ISBN: (纸本)9783642336652

Fault tolerance is very important for complex component-based software systems, but its configuration is complicated and challenging. In this paper, we propose a model driven approach to semi-automatic configuration of fault tolerance solutions. At design time, a set of reusable fault tolerance solutions are modeled as architecture styles, with the key properties verified by model checking. At runtime, the runtime software architecture of the target system is automatically constructed by the code generated from the given architectural meta-model. Then, the impact of each component on the system reliability is automatically analyzed to recommend which components should be considered in the fault tolerance configuration. Finally, after which components are guaranteed by what fault tolerance solution is decided by the system administration, the architecture model is automatically changed by merging with the selected fault tolerance styles and finally, these changes are automatically propagated to the target system. This approach is evaluated on Java enterprise systems. © 2012 Springer-Verlag.

关键词： Fault tolerance

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Fully secure unidirectional identity-based proxy re-encryption

Fully secure unidirectional identity-based proxy re-encrypti...

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14th International Conference on Information Security and Cryptology, ICISC 2011

作者： Luo, Song Shen, Qingni Chen, Zhong College of Computer Science and Engineering Chongqing University of Technology Chongqing China School of Software and Microelectronics MoE Key Lab. of Network and Software Assurance Peking University Beijing China Institute of Software School of Electronics Engineering and Computer Science Peking University China Ministry of Education China

ISBN: (纸本)9783642319112

Proxy re-encryption (PRE) allows the proxy to translate a ciphertext encrypted under Alice's public key into another ciphertext that can be decrypted by Bob's secret key. Identity-based proxy re-encryption (IB-PRE) is the development of identity-based encryption and proxy re-encryption, where ciphertexts are transformed from one identity to another. In this paper, we propose two novel unidirectional identity-based proxy re-encryption schemes, which are both non-interactive and proved secure in the standard model. The first scheme is a single-hop IB-PRE scheme and has master secret security, allows the encryptor to decide whether the ciphertext can be re-encrypted. The second scheme is a multi-hop IB-PRE scheme which allows the ciphertext re-encrypted multiple times but without the size of ciphertext growing linearly as previous multi-hop IB-PRE schemes. © 2012 Springer-Verlag.

关键词： Security of data

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Memetic three-dimensional gabor feature extraction for hyperspectral imagery classification

Memetic three-dimensional gabor feature extraction for hyper...

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3rd International Conference on Swarm Intelligence, ICSI 2012

作者： Zhu, Zexuan Shen, Linlin Sun, Yiwen He, Shan Ji, Zhen City Key Laboratory of Embedded System Design College of Computer Science and Software Engineering Shenzhen University Shenzhen 518060 China Shenzhen Key Lab. of Biomedical Engineering School of Medicine Shenzhen University 518060 China School of Computer Science University of Birmingham Edgbaston Birmingham B15 2TT United Kingdom

ISBN: (纸本)9783642309755

This paper proposes a three-dimensional Gabor feature extraction for pixel-based hyperspectral imagery classification using a memetic algorithm. The proposed algorithm named MGFE combines 3-D Gabor wavelet feature generation and feature selection together to capture the signal variances of hyperspectral imagery, thereby extracting the discriminative 3-D Gabor features for accurate classification. MGFE is characterized with a novel fitness evaluation function based on independent feature relevance and a pruning local search for eliminating redundant features. The experimental results on two real-world hyperspectral imagery datasets show that MGFE succeeds in obtaining significantly improved classification accuracy with parsimonious feature selection. © 2012 Springer-Verlag.

关键词： Feature Selection

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Identifying CpG islands in genome using conditional random fields

Identifying CpG islands in genome using conditional random f...

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8th International Conference on Intelligent Computing Technology, ICIC 2012

作者： Liu, Wei Chen, Hanwu Chen, Ling Department of Computer Science and Engineering Southeast University Nanjing 210096 China Department of Computer Science Yangzhou University Yangzhou 225127 China National Key Lab. of Novel Software Tech. Nanjing University Nanjing 210093 China

ISBN: (纸本)9783642315879

This paper presents a novel method for CpG islands location identification based on conditional random fields (CRF) model. The method transforms CpG islands location identification into the problem of sequential data lab.ling. Based on the nature of CpG islands location, we design the methods of model constructing, training and decoding in CRF accordingly. Experimental results on benchmark data sets show that our algorithm is more practicable and efficient than the traditional methods. © 2012 Springer-Verlag.

关键词： Location

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Two new local search strategies for minimum vertex cover 26

Two new local search strategies for minimum vertex cover

引用

26th AAAI Conference on Artificial Intelligence and the 24th Innovative Applications of Artificial Intelligence Conference, AAAI-12 / IAAI-12

作者： Cai, Shaowei Su, Kaile Sattar, Abdul Key Laboratory of High Confidence Software Technologies Peking University Beijing China State Key Laboratory of Computer Science Institute of Software Chinese Academy of Sciences Beijing China Institute for Integrated and Intelligent Systems Griffith University Brisbane QLD Australia ATOMIC Project Queensland Research Lab. NICTA Australia

ISBN: (纸本)9781577355687

In this paper, we propose two new strategies to design efficient local search algorithms for the minimum vertex cover (MVC) problem. There are two main drawbacks in state-of-the-art MVC local search algorithms: First, they select a pair of vertices to be exchanged simultaneously, which is time consuming;Second, although they use edge weighting techniques, they do not have a strategy to decrease the weights. To address these drawbacks, we propose two new strategies: two stage exchange and edge weighting with forgetting. The two stage exchange strategy selects two vertices to be exchanged separately and performs the exchange in two stages. The strategy of edge weighting with forgetting not only increases weights of uncovered edges, but also decreases some weights for each edge periodically. We utilize these two strategies to design a new algorithm dubbed NuMVC. The experimental results show that NuMVC significantly outperforms existing state-of-the-art heuristic algorithms on most of the hard DIMACS instances and all instances in the hard random BHOSLIB benchmark. Copyright © 2012, Association for the Advancement of Artificial Intelligence. All rights reserved.

关键词： Heuristic algorithms

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Tele-AR system based on real-time camera tracking

Tele-AR system based on real-time camera tracking

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2012 International Conference on Virtual Reality and Visualization, ICVRV 2012

作者： Wang, Yanke Zhong, Fan Li, Chao Xiang, Hui Peng, Qunsheng Qin, Xueying School of Computer Science and Technology Shandong University Jinan China Shandong Provincial Key Laboratory of Network Based Intelligent Computing Jinan China State Key Lab. of CAD and CG Zhejiang University Hangzhou China

ISBN: (纸本)9780769548364

We propose a visual tele-AR system, which is a combination of tele-existence and AR techniques. By wearing a video see-through HMD and moving his head, a user in this system is able to tele-operate a remote pan-tilt platform to observe the remote scene. Unlike traditional tele-existence systems which use mechanical or magnetic sensors for tele-operation, we propose a novel tele-operation method based on real-time tracking of master and slave cameras. The master camera is a component of the video see-through HMD mounted in front of user's eyes, while the slave camera is carried by a remote platform. We estimate use's head motion by tracking the master camera in real time, and translate head motions into motion commands to drive the remote pan-tilt platform. Ideally, motion of the remote platform will be exactly the same as user's head. Unfortunately, motion speed of the slave platform is usually limited by their mechanical capability, which may cause pose inconsistence between master and slave cameras, especially when user's head moves fast. We solve this problem by also tracking slave camera in real time, and warping video images according to difference between master and slave camera pose. Since slave camera is tracked, we can integrate virtual objects into remote scene, giving the user an augmented visual sense. To reduce system delay, our implementation is accelerated GPU parallel computation. Experimental results show the efficiency and robustness of our method. © 2012 IEEE.

关键词： Augmented reality

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Pick-up tree based route recommendation from taxi trajectories

Pick-up tree based route recommendation from taxi trajectori...

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13th International Conference on Web-Age Information Management, WAIM 2012

作者： Hu, Haoran Wu, Zhiang Mao, Bo Zhuang, Yi Cao, Jie Pan, Jingui State Key Lab. for Novel Software Technology Nanjing University Nanjing China Jiangsu Provincial Key Laboratory of E-Business Nanjing University of Finance and Economics Nanjing China College of Computer and Information Engineering Zhejiang Gongshang University Hangzhou China

ISBN: (纸本)9783642322808

Recommending suitable routes to taxi drivers for picking up passengers is helpful to raise their incomes and reduce the gasoline consumption. In this paper, a pick-up tree based route recommender system is proposed to minimize the traveling distance without carrying passengers for a given taxis set. Firstly, we apply clustering approach to the GPS trajectory data of a large number of taxis that indicates state variance from "free" to "occupied", and take the centroids as potential pick-up points. Secondly, we propose a heuristic based on skyline computation to construct a pick-up tree in which current position is its root node that connects all centroids. Then, we present a probability model to estimate gasoline consumption of every route. By adopting the estimated gasoline consumption as the weight of every route, the weighted Round-Robin recommendation method for the set of taxis is proposed. Our experimental results on real-world taxi trajectories data set have shown that the proposed recommendation method effectively reduce the driving distance before carrying passengers, especially when the number of cabs becomes large. Meanwhile, the time-cost of our method is also lower than the existing methods. © 2012 Springer-Verlag.

关键词： Taxicabs

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COMBINING HAND-DRAWN CONCEPT MAPS WITH RFID TAGS

COMBINING HAND-DRAWN CONCEPT MAPS WITH RFID TAGS

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2012 IEEE 2nd International Conference on Cloud Computing and Intelligence systems

作者： Yingying Jiang Feng Tian Hongan Wang Guozhong Dai Intelligence Engineering Lab Institute of SoftwareChinese Academy of Sciences State Key Lab. of Computer Science Institute of SoftwareChinese Academy of Sciences

As concept maps are useful for knowledge organization, representation and sharing, people used to draw concept maps by pen in their daily life. And some concept maps are closely related to physical world. In this paper, we propose a kind of context-aware hand-drawn concept map with RFID tags, which is especially useful for pen-based mobile devices. First, the structure of the hand-drawn concept map is extracted. And then users can assign RFID tags to concept nodes. With the RFID lab.led concept nodes, concept maps are linked to the physical world, which can facilitate users’ understanding and retrieval of hand-drawn concept maps.

关键词： Concept map RFID Context-aware

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