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2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)最新文献

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Time series prediction with signal-to-noise ratio maps and high performance computing 时间序列预测与信噪比图和高性能计算
2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5873020
Laurentiu Bucur, Serban Petrescu
{"title":"Time series prediction with signal-to-noise ratio maps and high performance computing","authors":"Laurentiu Bucur, Serban Petrescu","doi":"10.1109/SACI.2011.5873020","DOIUrl":"https://doi.org/10.1109/SACI.2011.5873020","url":null,"abstract":"Time series prediction methods applied to chaotic signals affected by noise use a continuous pattern function as the least-squares estimate of an unknown deterministic map. The noise variance around the continuous pattern function is not always constant but may exhibit spatial variability, which directly affects prediction performance. In this paper we propose a novel approach for increasing predictor performance using a multi-resolution signal-to-noise ratio (SNR) map of phase space. We calculate it using a parralel algorithm on a high performance computing cluster and in the final stage of the approach we use a novel feature selection algorithm to build a kernel machine. We show the selected features form sparse kernel machines which outperform existing methods for the prediction of noisy financial data.","PeriodicalId":334381,"journal":{"name":"2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133168062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Discovering automation level of software change request process from qualitative empirical data 从定性的经验数据中发现软件变更请求过程的自动化程度
2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5872972
Ž. Stojanov
{"title":"Discovering automation level of software change request process from qualitative empirical data","authors":"Ž. Stojanov","doi":"10.1109/SACI.2011.5872972","DOIUrl":"https://doi.org/10.1109/SACI.2011.5872972","url":null,"abstract":"This paper presents an approach in discovering automation level of software change request process from qualitative empirical data. In the study is investigated common practice in local very small software companies. Constructivist grounded theory was used as a research method suitable for discovering common practice and for creating explanations that are grounded in empirical data. In the research participated software experts from local very small software companies. Software experts were interviewed individually in their companies or participated in organized focus groups. The process of qualitative research that is used in the study is outlined, followed by the research findings. Analysis of empirical data reveals that very small software companies do not have automated software change request process, or have automated only parts of the process.","PeriodicalId":334381,"journal":{"name":"2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128847057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
An approach of artificial intelligent machining process 一种人工智能加工过程的方法
2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5872984
A. Albu, Loredana Stanciu, G. Belgiu
{"title":"An approach of artificial intelligent machining process","authors":"A. Albu, Loredana Stanciu, G. Belgiu","doi":"10.1109/SACI.2011.5872984","DOIUrl":"https://doi.org/10.1109/SACI.2011.5872984","url":null,"abstract":"Intelligent machining means a blend between machining processes (turning, milling, drilling, grinding) and sensors, intelligent monitored by hardware and software applications dedicated to this task. From hardware point of view, today the sensors are incorporated by default in all machining equipments, but the intelligence is mostly human. Further researches try to replace the human decisions with artificial intelligence. This work presents a technical solution for a general machining process optimization. Logical inference is used in order to solve this problem. Economical aspects of the machining process were also considered important factors in this approach.","PeriodicalId":334381,"journal":{"name":"2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127390224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Finger detection based on hand contour and colour information 基于手部轮廓和颜色信息的手指检测
2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5872979
G. Simion, V. Gui, M. Otesteanu
{"title":"Finger detection based on hand contour and colour information","authors":"G. Simion, V. Gui, M. Otesteanu","doi":"10.1109/SACI.2011.5872979","DOIUrl":"https://doi.org/10.1109/SACI.2011.5872979","url":null,"abstract":"In this paper an algorithm which is able to count the number of fingers from a hand posture is presented. The method is based on hand contour and skin colour information. The middle axes of the fingers are detected. The method is robust regard the hand edge detection.","PeriodicalId":334381,"journal":{"name":"2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124310595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Power flow computing probabilistic approach 潮流计算的概率方法
2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5873076
D. Paunescu, O. Pop, P. Andea, E. Răduca, C. Craciun
{"title":"Power flow computing probabilistic approach","authors":"D. Paunescu, O. Pop, P. Andea, E. Răduca, C. Craciun","doi":"10.1109/SACI.2011.5873076","DOIUrl":"https://doi.org/10.1109/SACI.2011.5873076","url":null,"abstract":"This paper presents a software instrument designed for calculating of probabilistic power flow. There are discussed the results obtained by applying the instrument to study system test with 25 buses modeled on the national energy system in the south-west of Romania.","PeriodicalId":334381,"journal":{"name":"2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117061992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Miniature accelerometer precision improvement using intelligent control 采用智能控制提高微型加速度计精度
2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5873040
T. Grigorie, M. Lungu, I. Edu, R. Obreja
{"title":"Miniature accelerometer precision improvement using intelligent control","authors":"T. Grigorie, M. Lungu, I. Edu, R. Obreja","doi":"10.1109/SACI.2011.5873040","DOIUrl":"https://doi.org/10.1109/SACI.2011.5873040","url":null,"abstract":"The paper presents a way to improve the transient regime of a miniature accelerometer by using a fuzzy controller to close its loop. The fuzzy controller replaces an electronic block on the feedback path of the closed loop, block that, in the classical architecture, assured the system damping and, in the same time, played the role of elastic link of the accelerometer proof mass. For the proposed controller, proportional-derivative variant is chosen, and its input-output mapping is derived. The membership functions for inputs are s-functions, π-functions, respectively z-functions, while the output membership functions have constant values. To define the rules, a zero-order Sugeno fuzzy model is chosen. Finally, a comparative numerical study between the classical and the proposed accelerometer architectures is made.","PeriodicalId":334381,"journal":{"name":"2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116440467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Large wind farms integration in Romanian power system. Case study: Moldavia region 罗马尼亚电力系统中大型风力发电场的整合。案例研究:摩尔达维亚地区
2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5873067
D. Jigoria-Oprea, C. Barbulescu, S. Kilyeni, M. Raduca
{"title":"Large wind farms integration in Romanian power system. Case study: Moldavia region","authors":"D. Jigoria-Oprea, C. Barbulescu, S. Kilyeni, M. Raduca","doi":"10.1109/SACI.2011.5873067","DOIUrl":"https://doi.org/10.1109/SACI.2011.5873067","url":null,"abstract":"Large scale integration of renewable energy sources is challenging the stability of the power systems. The variability of these sources (especially of wind farms) is the main aspect which affects the system security and operation. Considering the unpredictability of these sources, the variations of the loads and the new paths of supply new tools of analysis are necessary. In this paper a new application for large wind farm integration in nowadays power system using stochastic power flow approach and random contingency analysis is presented. As a case study, the Romanian power system with large wind farm integration in the Moldavia region is analyzed.","PeriodicalId":334381,"journal":{"name":"2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129339911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Detecting Strong Berge Pareto equilibrium in a non-cooperative game using an evolutionary approach 用进化方法检测非合作博弈中的强Berge Pareto均衡
2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5872980
D. Dumitrescu, R. Lung, Noémi Gaskó
{"title":"Detecting Strong Berge Pareto equilibrium in a non-cooperative game using an evolutionary approach","authors":"D. Dumitrescu, R. Lung, Noémi Gaskó","doi":"10.1109/SACI.2011.5872980","DOIUrl":"https://doi.org/10.1109/SACI.2011.5872980","url":null,"abstract":"Nash equilibrium is an important solving concept in Game Theory. Playing in Nash sense means that no player (agent) wants to deviate from the equilibrium strategy in order to increase the payoff. Some games can have more Nash equilibria. Several refinements have been developed. Strong Berge Pareto equilibrium is an important refinement of the Nash equilibrium. An evolutionary technique based on non-domination is proposed in order to detect the strong Berge Pareto equilibria. Some numerical experiments are presented in order to illustrate the proposed method.","PeriodicalId":334381,"journal":{"name":"2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127350599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Performance of Fourier versus Wavelet analysis for magnetocardiograms using a SQUID-acquisition system 基于squid采集系统的磁心图傅里叶与小波分析性能
2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5872975
B. Arvinti, A. Isar, R. Stolz, M. Costache
{"title":"Performance of Fourier versus Wavelet analysis for magnetocardiograms using a SQUID-acquisition system","authors":"B. Arvinti, A. Isar, R. Stolz, M. Costache","doi":"10.1109/SACI.2011.5872975","DOIUrl":"https://doi.org/10.1109/SACI.2011.5872975","url":null,"abstract":"A lately developed clinical investigation method for the diagnosis of heart disease, the magnetocardiogram (MCG) is described in this paper. Sensitive sensors based on Superconducting Quantum Interference Devices (SQUID), developed at IPHT-Jena, Germany are used for the acquisition of reliable data. MCGs are sensitive to magnetic interferences and procedures in order to enhance the signal-to-noise ratio have to be developed. The paper aims at the comparison of the performance of Fourier versus Wavelet analysis applied to the input signal in order to enable the choice of the optimal processing technique for MCGs, advantages and drawbacks of each procedure being shown. A wavelet based baseline drift correction method and a denoising technique for the reduction of the biological noise of MCGs have been developed and compared to the Fourier based filtering procedure from IPHT-Jena.","PeriodicalId":334381,"journal":{"name":"2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129100323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Traffic shaping and traffic policing impacts on aggregate traffic behaviour in high speed networks 高速网络中流量整形和流量监管对总体流量行为的影响
2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5873048
Daniel-Simion Daian, Dan-Horia Giura
{"title":"Traffic shaping and traffic policing impacts on aggregate traffic behaviour in high speed networks","authors":"Daniel-Simion Daian, Dan-Horia Giura","doi":"10.1109/SACI.2011.5873048","DOIUrl":"https://doi.org/10.1109/SACI.2011.5873048","url":null,"abstract":"Aggregate traffic in high speed networks is characterized by “burst within burst” structure over a wide range of time scales, heavy tailed inter-arrival time densities, self-similarity and long range dependence. These properties are followed by a degradation of quality of service in aggregate traffic. A high self-similarity grade will eventually fill up the network equipments memory and queues no matter how large they are designed. This paper compares the effect of traffic shaping and traffic policing on aggregate traffic dynamics especially stochastic properties on traffic time series. We propose a series of tests and compare the result obtained from OPNET Modeler simulation program to simulation with synthetic traffic generated by chaotic dynamic systems. We are interested in parameters such as Hurst parameter, autocorrelation function and variance for different shaping and policing techniques applied to input traffic in order to obtain smooth aggregate traffic trace.","PeriodicalId":334381,"journal":{"name":"2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131680788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
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