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12th IEEE International Symposium on Computational Intelligence and informatics, CINTI 2011

作者： Lovassy, R. Kóczy, L.T. Gál, L. Rudas, Imre J. Inst. of Microelectronics and Technology Kandó Kálmán Faculty of Electrical Engineering Óbuda University Budapest Hungary Dept. of Informatics Faculty of Engineering Sciences Széchenyi István University Gyor Hungary Dept. of Telecommunications and Media Informatics Budapest University of Technology and Economics Budapest Hungary Dept. of Technology Informatics and Economy University of West Hungary Szombathely Hungary Inst. of Intelligent Engineering Systems John Von Neumann Faculty of Informatics Óbuda University Budapest Hungary

ISBN: (纸本)9781457700453

This paper introduces an approach for studying the stability, and generalization capability of one and two hidden layer Fuzzy Flip-Flop based Neural Networks (FNNs) with various fuzzy operators. By employing fuzzy flip-flop neurons as sigmoid function generators, novel function approximators are established that also avoid overfitting in the case of test data containing noisy items in the form of outliers. It is shown, by comparing with existing standard tansig function based approaches that reducing the network complexity networks with comparable stability are obtained. Finally, examples are given to illustrate the effect of the hidden layer number of neural networks. © 2011 IEEE.

关键词： Fuzzy inference

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Adaptive Bloom filters for multicast addressing

Adaptive Bloom filters for multicast addressing

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2011 IEEE Conference on computer Communications Workshops, INFOCOM WKSHPS 2011

作者： Heszberger, Zalan Tapolcai, Janos Gulyas, Andras Biro, Jozsef Zahemszky, Andras Ho, Pin-Han Budapest University of Technology and Economics Dept. of Telecommunications and Media Informatics Magyar tudsok krtja 2 Budapest 1117 Hungary Dept. of Electrical and Computer Engineering University of Waterloo Canada

ISBN: (纸本)9781457702488

In-packet Bloom filters are recently proposed as a possible building block of future Internet architectures replacing IP or MPLS addressing that solves efficient multicast routing, security and other functions in a stateless manner. In such frameworks a bloom filter is placed in the header which stores the addresses of the destination nodes or the traversed links. In contrast to the standard Bloom filter, the length of the in-packet Bloom filter must be highly adaptive to the number of stored elements to achieve low communication overhead. In this paper we propose a novel type of Bloom filter called Adaptive Bloom filter, which can adapt its length to the number of elements to be represented with a very fine granularity. The novel filter can significantly reduce the header size for in-packet bloom filter architecture, by eliminating the wasting effect experienced in existing block-based approaches which rely on concatenating several standard Bloom filters. Nevertheless, it requires slightly more calculations when adding and removing elements. © 2011 IEEE.

关键词： Bandpass filters

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A diagnostic reasoning approach to defect prediction

A diagnostic reasoning approach to defect prediction

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Lecture Notes in computer Science

作者： Abreu, Rui Gonzalez-Sanchez, Alberto Van Gemund, Arjan J. C. Dept. of Informatics Engineering University of Porto Portugal School of Computer Science Carnegie Mellon University United States Software Technology Dept. Delft University of Tech. Netherlands

ISBN: (纸本)9783642218262

During software testing, defect prediction approaches measure current reliability status, forecasting future program failures, and provide information on how many defects need to be removed before shipping. Existing approaches often require faults to be detected and identified as a new one, before a model-based trend can be fitted. While during regression testing failures may frequently occur, it is not evident which are related to new faults. Consequently, reliability growth trending can only be performed in sync with fault identification and repair, which is often performed in between regression test cycles. In this paper we present a dynamic, reasoning approach to estimate the number of defects in the system early in the process of regression testing. Our approach, coined Dracon, is based on Bayesian fault diagnosis over abstractions of program traces (also known as program spectra). Experimental results show that Dracon systematically estimates the exact number of (injected) defects, provided sufficient tests cases are available. Furthermore, we also propose a simple, analytic performance model to assess the influence of failed test cases in the estimation. We observe that our empirical findings are in agreement with the model. © 2011 Springer-Verlag.

关键词： Software testing

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Extracting BI-RADS features from Portuguese clinical texts

Extracting BI-RADS features from Portuguese clinical texts

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2012 IEEE International Conference on Bioinformatics and Biomedicine, BIBM2012

作者： Nassif, Houssam Cunha, Filipe Moreira, Inês C. Cruz-Correia, Ricardo Sousa, Eliana Page, David Burnside, Elizabeth Dutra, Inês University of Wisconsin Madison WI United States AroundKnowledge Porto Portugal Centro Hospitalar S. João Faculty of Medicine University of Porto Porto Portugal Superior School of Health Technology of Porto Vila Nova de Gaia Portugal INESC Porto Faculty of Engineering University of Porto Porto Portugal CINTESIS - Center for Research in Health Technologies and Information Systems Faculty of Medicine University of Porto Porto Portugal CIDES - Health Information and Decision Sciences Faculty of Medicine Universidade Do Porto Porto Portugal Dept. of Biostatistics and Medical Informatics UW-Madison United States Department of Radiology University of Wisconsin School of Medicine and Public Health Madison WI United States Department of Computer Science Faculty of Sciences University of Porto Porto Portugal

ISBN: (纸本)9781467325585

In this work we build the first BI-RADS parser for Portuguese free texts, modeled after existing approaches to extract BI-RADS features from English medical records. Our concept finder uses a semantic grammar based on the BI-RADS lexicon and on iterative transferred expert knowledge. We compare the performance of our algorithm to manual annotation by a specialist in mammography. Our results show that our parser's performance is comparable to the manual method. © 2012 IEEE.

关键词： Iterative methods

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Extending the dimensional templates approach to integrate complex multidimensional design concepts

Extending the dimensional templates approach to integrate co...

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Lecture Notes in computer Science

作者： Oliveira, Rui Rodrigues, Fátima Martins, Paulo Moura, João Paulo Informatics Department School of Technology and Management Polytechnic Institute of Leiria Portugal Informatics Engineering Dept. School of Engineering Polytechnic Inst. of Porto Portugal GECAD-Knowledge Engineering and Decision Support Research Center Informatics Engineering Dept. University of Trás-os-Montes e Alto Douro Portugal

ISBN: (纸本)9783642235436

In the past, several approaches have been devised to semi- automate the multidimensional design (MDD) of Data Warehouse (DW) projects. Such approaches highly contribute to more expertise- independent and deterministic MDD results. Among them, only the Dimensional Templates Approach (DTA) focuses on solving the critical resource containment problems of DW prototypes. Originally, the DTA allows solely the generation of basic MDDs. In this paper, we depict an extension to address complex MDD issues. These include (i) date/time hierarchies, (ii) many-to-many relationships, (iii) hierarchically structured data and (iv) coverage facts. The proposed enhancements, including a rebuilt generation algorithm, allow more accurate and broadening results than the original DTA. Throughout the paper, references are made to a real case study to which the improved DTA has been applied using two developed prototype tools. © 2011 Springer-Verlag.

关键词： Data warehouses

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A musical mood trajectory estimation method using lyrics and acoustic features

A musical mood trajectory estimation method using lyrics and...

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2011 ACM Multimedia Conference, MM'11 and Co-Located Workshops - 1st International ACM Workshop on Music Information Retrieval with User-Centered and Multimodal Strategies, MIRUM'11

作者： Nishikawa, Naoki Itoyama, Katsutoshi Fujihara, Hiromasa Goto, Masataka Ogata, Tetsuya Okuno, Hiroshi G. Dept. of Intelligence Science and Technology Grad. School of Informatics Kyoto University Japan Japan School of Electronic Engineering and Computer Science Queen Mary University of London United Kingdom

ISBN: (纸本)9781450309868

In this paper, we present a new method that represents an overall musical time-varying impression of a song by a pair of mood trajectories estimated from lyrics and audio signals. The mood trajectory of the lyrics is obtained by using the probabilistic latent semantic analysis (PLSA) to estimate topics (representing impressions) from words in the lyrics. The mood trajectory of the audio signals is estimated from acoustic features by using the multiple linear regression analysis. In our experiments, the mood trajectories of 100 songs in ***'s Best of 2010 were estimated. The detailed analysis of the 100 songs confirms that acoustic features provide more accurate mood trajectory and the 21% resulting mood trajectories are matched to realistic musical mood available at ***. © 2011 ACM.

关键词： Linear regression

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E-AirQuality: A dynamic web based application for evaluating the air quality index for the city of Kozani, Hellas

E-AirQuality: A dynamic web based application for evaluating...

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15th Panhellenic Conference on informatics, PCI 2011

作者： Ioannis, Skordas Fragulis, George F. Triantafyllou, Athanassios G. Dept. of Geotechnology and Environmental Engineering Laboratory of Atmospheric Pollution and Environmental Physics Tecnological Educational Inst. of Western Macedonia Kozani Hellas Greece Laboratory of Web Technologies and Applied Control Systems Dept. of Computer Science and Mathematics Tecnological Educational Inst. of Western Macedonia Kozani Hellas Greece

ISBN: (纸本)9780769543895

The purpose of this work is to provide access to meteorological data as well as information of the status of air quality for the city of Kozani in real time with a userfriendly interface. The application has been developed using only open source software . MySQL has been used as a relational database management system, PHP as the scripting language for the development of the application and to connect the application to the database and Javascript/HTML for the user interface programming . The users are separated to two different groups (simple users-visitors and authorised users). Each group is provided by a number of functionalities. © 2011 IEEE.

关键词： Open source software

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Verifiable coverage criteria for automated testing

Verifiable coverage criteria for automated testing

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15th International Conference on System Design Languages, SDL 2011

作者： Baranov, Sergey Kotlyarov, Vsevolod Weigert, Thomas St. Petersburg Inst. for Informatics and Automation Russian Academy of Sciences St.Petersburg Russia Saint-Petersburg State Polytechnic University St. Petersburg Russia Dept. of Computer Science Missouri University of Science and Technology Rolla MO United States

ISBN: (纸本)9783642252631

A key question for system testing of a software product is how to determine that the semantics of its requirements is adequately realized in the given implementation, or alternatively to find a series of concrete counter-examples demonstrating the violation of (a) particular requirement(s). An adequate test suite will aid in this determination. This paper formulates three types of requirements coverage criteria to establish the adequacy of a test suite. The suggested approach to system testing was validated in a number of medium and large size industrial projects. © 2011 Springer-Verlag.

关键词： Integration testing

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On optimal unequal error/erasure protection of scalable video multicasting using randomized linear network codes

On optimal unequal error/erasure protection of scalable vide...

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IEEE International Symposium on Network Coding

作者： Zao, John K. Sun, Qifu Tyler Yen, Kuo-Kuang Li, Shuo-Yen Robert Wang, Chung-Hsuan Yao, Chien Liang, Tong Claude, Nicolas A. Yip, Jennifer Dept. of Computer Science and Electrical Engineering National Chiao Tung University Hsinchu Taiwan Dept. of Information Engineering Chinese University of Hong Kong Hong Kong Hong Kong Inst. of Network Coding Chinese University of Hong Kong Hong Kong Hong Kong

ISBN: (纸本)9781612841403

Unequal error/erasure protection (UEP) is often employed in multilayer video streaming to ensure successful reception of the important reference layers. In this paper, we investigate possible ways to provide such protection to the multicasting sessions of scalable video codes (SVC) using randomized linear network codes (RLNCs). We surmised that it takes both proper combination of transmitted symbols at the source nodes and selective mixing of these symbols over the transport network to produce desirable UEP effects. To test our hypothesis, we conducted multicasting experiments over acyclic transport networks exhibiting localized or widespread packet losses. We observed that only a small collection of RLNCs is capable of providing proper UEP by taking into account the utility values of different SVC layers and the packet loss rates along different communication links. Specifically, we discovered layered coding structures in the optimal UEP-RLNCs that mirror corresponding layered structures in the scalable video codes. We also quantified the UEP capability of network codes using separation vectors and showed the gradual changes of codeword separations among different UEP-RLNCs. Finally, we developed a prototype implementation of UEP-RLNCs by extending Chou et al.'s practical network coding scheme. © 2011 IEEE.

关键词： Network coding

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Modelling the MOS Device Conductance Using an Extended Tunnelling Model and Subsequent Determination of Interface Traps.

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MRS Online Proceedings Library (OPL) 2011年第1期864卷 E4.25-E4.25页

作者： N. Konofaos Computer Engineering and Informatics Dept. & Research Academic Computer Technology Institute Building B University Campus Patras Greece. email: nkonofao@ceid.upatras.gr

The contribution of the AC conductance on admittance spectroscopy measurements on Metal-Insulator-Semiconductor (MIS) devices allows the calculation of the interface traps density and the relevant time constant. Two equivalent model approaches can be applied in order to explain the experimental results. One model is the statistical model based on the Shockley- Read-Hall (S-R-H) recombination statistics and the other one is a model based on the quantum tunneling effect. Recent evidence suggest that the tunneling model can be equivalent to the statistical one if a continuum of states is also considered in the modeling, creating an extended tunneling model. In the present paper, a further investigation on the extended model is attempted. Admittance spectroscopy data were collected for various Insulator/Si combinations, such as SrTiO3 and BaTiO3 deposited on Si. Both the S-R-H based and the extended tunneling models were used to analyze the data. The results showed that the extended tunneling can model the conductance of the device successfully and can calculate the interface states density and the traps time constant.

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