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Proceedings of the 2013 IEEE/ACM International Symposium on Code Generation and Optimization, CGO 2013 2013年 i页

作者： Wu, Chenggang Davidson, Jack W. State Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of Sciences China Department of Computer Science University of Virginia United States

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Are forward designed or reverse-engineered UML diagrams more helpful for code maintenance?: A controlled experiment 13

Are forward designed or reverse-engineered UML diagrams more...

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17th International Conference on Evaluation and Assessment in Software Engineering, EASE 2013

作者： Fernández-Sáez, Ana M. Chaudron, Michel R.V. Genero, Marcela Ramos, Isabel Leiden Institute of Advanced Computer Science Leiden University Niels Bohrweg 1 2333 CA Leiden Netherlands Joint Computer Science and Engineering Department Chalmers University of Technology and University of Gothenburg Hörselgången 11 Göteborg Sweden Instituto de Tecnologías y Sistemas de Información University of Castilla-La Mancha Paseo de la Universidad 4 Ciudad Real Spain Departamento de Lenguajes y Sistemas Informáticos University of Seville Av. Reina Mercedes s/n 41012 Seville Spain

ISBN: (纸本)9781450318488

Context: UML has been the de facto standard notation for modeling object-oriented software systems since its appearance in 1997. UML diagrams are important for maintainers of a system, especially when the software was developed by a different team. These diagrams of the system are not always available, however, and are commonly recovered using Reverse Engineering (RE) techniques. When obtained through RE, UML diagrams have a high level of detail as compared to those developed in the forward design activity. Method: In this paper we report on a comparison of the attitude and performance of maintainers when using these two kinds of diagrams during the maintenance of source code. Our findings were obtained by carrying out a controlled experiment with 40 students of a Master's degree in computer science. Results: The results show a preference for forward design diagrams but do not display significant differences in task performance. The post-experiment survey results have led us to conclude that the subjects did not consider RE diagrams helpful;they found them difficult to understand, particularly the sequence diagrams. In the case of forward design diagrams, subjects considered sequence diagrams as useful, but they did not really employ them. Conclusions: Based on our findings, as regards performance of maintainers, there are no objective results which favor the use of one of these types of diagram in particular, i.e., UML diagrams which come from forwards design, on the one hand, and diagrams obtained from RE, on the other. Subjective opinions do, however, lead us to recommend the use of diagrams created during design. Nevertheless, we realize that the results should be considered as preliminary ones;further replications of this experiment are planned, using students and professionals, the aim being to obtain more conclusive results.

关键词： Surveys

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Free weight exercises recognition based on dynamic time Warping of acceleration data

Communications in Computer and Information Science

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Communications in computer and Information science 2013年 355卷 178-185页

作者： Li, Chuanjiang Fei, Minrui Hu, Huosheng Qi, Ziming School of Mechanical Engineering and Automation Shanghai Key Laboratory of Power Station Automation Technology Shanghai University 200072 China College of Information Mechanical and Electrical Engineering Shanghai Normal University Shanghai 200234 China Department of Computer Science University of ESSEX Colchester CO4 3SQ United Kingdom School of Architecture Building and Eng. Otago Polytechnic Dunedin 9054 New Zealand

To maximize training effects in free weight exercises, people need to remember repetitions of each type of exercises, which is tedious and difficult. Recognizing exercises type and counting automatically can overcome this problem, and multiple accelerometers were used in the existing exercises recognition. This paper presents a new recognition method based on one triaxial accelerometer, in which a filtered acceleration data stream is divided into time series with unequal length for peak analysis instead of conventional fixed length window. Based on this time series, Dynamic Time Warping (DTW) is deployed to recognize weight exercise types. 3D Euclidean distance and Itakura parallelogram constraint region are used to improve recognition performance. A reference template is set up for each class based on many examples instead of one in the conventional way. The proposed procedures are compared with other popular methods with both the user-dependent protocol and the userindependent protocol. Results show that proposed approach is feasible and can achieve good performance. © Springer-Verlag Berlin Heidelberg 2013.

关键词： Accelerometers

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Semi-Global Inference in Phenotype-Protein Network

Semi-Global Inference in Phenotype-Protein Network

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The 7th International Conference on Management and Service science(MASS 2013)

作者： Siliang Xia Guangri Quan Yongbo Zhao Xuhui Jia Institute of Architecture of Application Systems University of Stuttgart School of Computer Science Harbin Institute of Technology at Weihai Institute of Microelectronics Chinese Academy of Sciences Department of Computer Science The University of Hong Kong

Discovering genetic basis of diseases is an important goal and a challenging problem in bioinformatics *** by network-based global inference approach,Semi-global inference method is proposed to capture the complex associations between phenotypes and *** proposed method integrates phenotype similarities and protein-protein interactions,and it establishes the profile vectors of phenotypes and *** the relevance between each candidate gene and the target phenotype is *** genes are then ranked according to relevance mark and genes that are potentially associated with target disease are identified based on this *** model selects nodes in integrated phenotype-protein network for inference,by exploiting Phenotype Similarity Threshold(PST),which throws lights on selection of similar phenotypes for gene prediction *** vector relevance metrics for computing the relevance marks of candidate genes are *** performance of the model is evaluated on Online Mendelian Inheritance in Man(OMIM) data sets and experimental evaluation shows high performance of proposed Semi-global method outperforms existing global inference methods.

关键词： Diseases Gene Prioritization Phenotype-Protein Network Semi-Global Inference Phenotype Similarity Threshold

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Emotional stress detection in contradictory versus self-consistent speech by means of voice biometrical signature

Emotional stress detection in contradictory versus self-cons...

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5th International Work-Conference on the Interplay Between Natural and Artificial Computation, IWINAC 2013

作者： Rodellar-Biarge, Victoria Palacios-Alonso, Daniel Bartolomé, Elena Gómez-Vilda, Pedro Neuromorphic Speech Processing Laboratory Universidad Politécnica de Madrid Campus de Montegancedo s/n 28223 Pozuelo de Alarcón Spain Madrid Department of Architecture and Technology Systems Faculty of Computer Science Polytechnic University Madrid Spain

ISBN: (纸本)9783642386367

Most of the parameters proposed for the characterization of the emotion in speech concentrate their attention on phonetic and prosodic features. Our approach goes beyond by trying to relate the biometrical signature of voice with a possible neural activity that might generate voice production. The present study affords emotional differentiation in speech from the behavior of the biomechanical stiffness and cyclicality estimates, indicators of tremor. The emotion under study is the stress produced when a speaker has to defend an idea opposite to his/her thoughts or feelings and compared when his/her speech is self-consistent. The results presented show that females tend to relax vocal folds and decrease tremor and males tend to show the opposite behavior. © 2013 Springer-Verlag.

关键词： Biomechanics

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Semi-Global Inference in Phenotype-Protein Network

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Engineering（科研） 2013年第10期5卷 181-188页

作者： Siliang Xia Guangri Quan Yongbo Zhao Xuhui Jia Department of Computer Science The University of Hong Kong Hong Kong China Institute of Architecture of Application Systems University of Stuttgart Stuttgart Germany Institute of Microelectronics Chinese Academy of Sciences Beijing China School of Computer Science Harbin Institute of Technology at Weihai Weihai China

Discovering genetic basis of diseases is an important goal and a challenging problem in bioinformatics research. Inspired by network-based global inference approach, Semi-global inference method is proposed to capture the complex associations between phenotypes and genes. The proposed method integrates phenotype similarities and protein-protein interactions, and it establishes the profile vectors of phenotypes and proteins. Then the relevance between each candidate gene and the target phenotype is evaluated. Candidate genes are then ranked according to relevance mark and genes that are potentially associated with target disease are identified based on this ranking. The model selects nodes in integrated phenotype-protein network for inference, by exploiting Phenotype Similarity Threshold (PST), which throws lights on selection of similar phenotypes for gene prediction problem. Different vector relevance metrics for computing the relevance marks of candidate genes are discussed. The performance of the model is evaluated on Online Mendelian Inheritance in Man (OMIM) data sets and experimental evaluation shows high performance of proposed Semi-global method outperforms existing global inference methods.

关键词： Diseases Gene Prioritization Phenotype-Protein Network Semi-Global Inference Phenotype Similarity Threshold

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Software ecosystems governance to enable IT architecture based on software asset management

Software ecosystems governance to enable IT architecture bas...

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2013 7th IEEE International Conference on Digital Ecosystems and Technologies: Smart Planet and Cyber Physical Systems as Embodiment of Digital Ecosystems, DEST 2013

作者： Albert, Benno E. Dos Santos, Rodrigo P. Werner, Claudia M. Technological Architecture Information Technology and Telecommunications Petrobras Rio de Janeiro Brazil System Engineering and Computer Science Department COPPE/UFRJ Federal University of Rio de Janeiro P.O. Box 68511 Rio de Janeiro 21945-970 Brazil

ISBN: (纸本)9781479907861

Information technology (IT) supports companies' business processes and decision making through the use of technologies and tools that are provided by suppliers. Companies that are suppliers and consumers establish relationships through contracts of purchasing products and consulting, for example. These relationships, i.e., the companies involved and the information exchanged between the parties are considered elements of Software Ecosystems (SECOs). All of these elements can be considered SECO assets and need to be supported via SECO governance since their organization and evolution represent an IT architecture. So, IT companies or their IT divisions can use the ISO/IEC 19770 standard for Software Asset Management (SAM) in order to control costs and optimize software investments. In this sense, this paper describes a SECO Governance approach for enabling an IT architecture based on SAM. © 2013 IEEE.

关键词： Information technology

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Semi-Global Inference in Phenotype-Protein Network

Semi-Global Inference in Phenotype-Protein Network

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The 7th International Conference on Bioinformatics and Biomedical Engineering(ICBBE 2013)

作者： Siliang Xia Guangri Quan Yongbo Zhao Xuhui Jia Institute of Architecture of Application Systems University of StuttgartStuttgartGermany School of Computer Science Harbin Institute of Technology at Weihai Institute of Microelectronics Chinese Academy of Sciences Department of Computer Science The University of Hong Kong

Discovering genetic basis of diseases is an important goal and a challenging problem in bioinformatics *** by network-based global inference approach,Semi-global inference method is prop

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Hybrid approach of filtering unnecessary way accesses for set-associative caches

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Jisuanji Xuebao/Chinese Journal of computers 2013年第4期36卷 799-808页

作者： Fan, Ling-Jun Xu, Yuan-Chao Shi, Wei-Song Fan, Dong-Rui Lou, Jie State Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of Science Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China Department of Computer Science Wayne State University Detroit MI-48202 United States Intel Corporation Beijing 100190 China College of Information Engineering Capital Normal University Beijing 100048 China

Power has been a big issue in processor design for several years. Conventional popular approaches for addressing this issue like DVFS (Dynamic Voltage Frequency Scaling) now hit the law of diminishing returns. As multi/many-core processors becoming the main stream processors, caches account for more and more CPU die area and power, this paper presents using filtering unnecessary way accesses to reduce dynamic power consumption of caches shared by instruction and data. The methods include using Invalid Filter, which could eliminate accesses to cache ways contained invalid blocks, and I/D Filter, which could eliminate accesses to cache ways contained instruction/data access type mismatch blocks, and Tag-2 Filter, which could eliminate accesses to cache ways contained tag lowest 2 bits mismatch blocks. Since the methods reducing the activities happened in cache architecture, dynamical CPU power could be significantly decreased. In the paper, we also propose combining the above methods together, which is called Invalid+I/D+Tag-2 Filter, in an attempt to achieve better power saving results. We have verified the effectiveness and complementariness of the three proposed methods through analysis and experiments. Also, our evaluations show that, we could obtain 19.6%~47.8% (which is on average 34.3%) improvement on a 64KB-4way set-associative cache and 19.6%~55.2% (which is on average 39.2%) improvement on a 128KB-8way set-associative cache comparing to Invalid+I/D Filter, and 16.1%~27.7% (which is on average 16.6%) improvement on a 64KB-4way set-associative cache and 6.9%~44.4% (which is on average 25.0%) improvement on a 128KB-8way set-associative cache comparing to Invalid+Tag-2 Filter, respectively.

关键词： Bandpass filters

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Minimax regret 1-sink location problems in dynamic path networks

Minimax regret 1-sink location problems in dynamic path netw...

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10th International Conference on Theory and Applications of Models of Computation, TAMC 2013

作者： Cheng, Siu-Wing Higashikawa, Yuya Katoh, Naoki Ni, Guanqun Su, Bing Xu, Yinfeng Department of Computer Science and Engineering Hong Kong University of Science and Technology Hong Kong Hong Kong Department of Architecture and Architectural Engineering Kyoto University Japan Business School Sichuan University Chengdu 610065 China School of Economics and Management Xi'an Technological University Xi'an 710032 China School of Management Xi'an Jiaotong University Xi'an 710049 China State Key Lab. for Manufacturing Systems Engineering Xi'an 710049 China

ISBN: (纸本)9783642382352

This paper considers minimax regret 1-sink location problems in dynamic path networks. A dynamic path network consists of an undirected path with positive edge lengths and constant edge capacity and the vertex supply which is nonnegative value, called weight, is unknown but only the interval of weight is known. A particular assignment of weight to each vertex is called a scenario. Under any scenario, the cost of a sink is defined as the minimum time to complete evacuation for all weights (evacuees), and the regret of a sink location x is defined as the cost of x minus the cost of an optimal sink. Then, the problem is to find a point as a sink such that the maximum regret for all possible scenarios is minimized. We present an O(n log2 n) time algorithm for minimax regret 1-sink location problems in dynamic path networks, where n is the number of vertices in the network. © Springer-Verlag Berlin Heidelberg 2013.

关键词： Costs

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