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EUROCON 2007 - The International Conference on "Computer as a Tool"最新文献

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Vowel, Digit and Continuous Speech Recognition Based on Statistical, Neural and Hybrid Modelling by Using ASRS_RL 基于ASRS_RL的统计、神经和混合建模的元音、数字和连续语音识别
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400336
C. Dumitru, I. Gavat
{"title":"Vowel, Digit and Continuous Speech Recognition Based on Statistical, Neural and Hybrid Modelling by Using ASRS_RL","authors":"C. Dumitru, I. Gavat","doi":"10.1109/EURCON.2007.4400336","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400336","url":null,"abstract":"In the first part of this paper a recognizer based on hidden Markov models (HMMs) is compared in the simple task of vowel recognition with a recognizer based on the multilayer perceptron (MLP). In this situation, we have obtained better results for the last recognizer, fact which highlights the advantage of the discriminative training of the perceptron versus the maximum likelihood training of the HMM. Because MLPs have problems with accommodating time sequences like speech, a combination of a HMM with a MLP could be a good idea. In the second part of the paper, the hybrid structure HMMMLP is compared with the simple HMM in a digit recognition task. The hybrid structure has recognition rates improved with around 2%. In the last part of the paper are describes the continuous speech recognition experiments for Romanian language, by using HMM modelling. The progresses concern enhancement of modelling by taking into account the context in form of triphones, improvement of speaker independence by applying a gender specific training and enlargement of the feature categories used to describe speech sequences. In order to easier handling the recognition experiments an Automatic Speech Recognition System for Romanian Language (ASRS_RL) was designed.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126515548","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: 18
Video Content-Based Retrieval System 基于视频内容的检索系统
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400527
I. Dimitrovski, S. Loskovska, G. Kakasevski, I. Chorbev
{"title":"Video Content-Based Retrieval System","authors":"I. Dimitrovski, S. Loskovska, G. Kakasevski, I. Chorbev","doi":"10.1109/EURCON.2007.4400527","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400527","url":null,"abstract":"At present, multimedia databases are used in many application areas and their sizes become larger and larger. Therefore, an efficient multimedia management system is required. This kind of system has various areas of application such as video-on-demand and digital libraries. The importance of video-content-based retrieval systems guided our research toward implementation of a Video-Content-based Retrieval System. The system is fully implemented in Java and is easily upgradable. Many techniques for feature extraction and selection are implemented in the system.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128034329","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: 7
Robust Control of an Electrical Drive using Adaptive Fuzzy Logic Control Structure with Sliding-Mode Compensator 滑模补偿自适应模糊控制结构对电传动的鲁棒控制
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400684
K. Szabat, M. Kaminski, T. Orłowska-Kowalska
{"title":"Robust Control of an Electrical Drive using Adaptive Fuzzy Logic Control Structure with Sliding-Mode Compensator","authors":"K. Szabat, M. Kaminski, T. Orłowska-Kowalska","doi":"10.1109/EURCON.2007.4400684","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400684","url":null,"abstract":"In the paper a robust control system with the fuzzy adaptive controller and the additional compensator is presented. A model reference adaptive control system (MRAC) is applied to a drive system with changeable parameters. The speed controller is based on the neuro-fuzzy network. The additional compensator relaying on the sliding-mode theory is used to improve the dynamical characteristics of the drive system. The proposed control structure is investigated in simulation and experimental tests.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122247619","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
Subsampling-Based Wavelet Watermarking Algorithm Using Support Vector Regression 基于支持向量回归的子采样小波水印算法
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400269
Gaoding Fu, Hong Peng
{"title":"Subsampling-Based Wavelet Watermarking Algorithm Using Support Vector Regression","authors":"Gaoding Fu, Hong Peng","doi":"10.1109/EURCON.2007.4400269","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400269","url":null,"abstract":"A subsampling-based wavelet watermarking algorithm by using support vector regression (SVR) in the wavelet domain is presented in this paper. Four coefficient sets are obtained via DWT for four subimages gained by subsampling an original image. Because of the neighborhood correlation of image pixels, the coefficient sets are approximately equal. Due to the good learning and generalization capability in the processing of small-sample learning problems, SVR is applied to model the relationship between the coefficient on the random selected coefficient set and the coefficients on the corresponding position of others. Then, the watermark is embedded into part of the low frequency coefficients or extracted by adjusting or comparing the relationship between the embedding coefficient and the output of the trained SVR. Experimental results show our technique has excellent performance against several common attacks.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127938802","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
DC-to-DC Converter Simulation Applied to a Modified Boost Converter 应用于改进升压变换器的dc - dc变换器仿真
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400538
B. Nagl, A.F. Rafetseder, J.P. Fohringer, F. Himmelstoss
{"title":"DC-to-DC Converter Simulation Applied to a Modified Boost Converter","authors":"B. Nagl, A.F. Rafetseder, J.P. Fohringer, F. Himmelstoss","doi":"10.1109/EURCON.2007.4400538","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400538","url":null,"abstract":"The main topic of this work is a simulation program which is able to simulate the dynamic behavior of systems described by sets of state-space equations in Matlab. For the dynamic simulation, two or more describing systems of differential equations have to be established according to the different states of the desired model. As an example, a modified \"boost\"-type DC-to-DC converter circuit with a tapped inductor is used. The two main states of the circuit are selected by turning the active switch on or off, respectively. Other states are activated in special situations, e.g. at negative or too large flux values. For a simulation of the converter structure in real situations, the program enables one to simulate steps of the load resistances, the duty ratio, the desired output voltage etc. Additionally, the program is tested with a lead-lag controller, and the performance of the modeled circuit with and without the controller is simulated.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"597 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134435036","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
Distributed Reputation Management in Collaborative Environment of Anonymous MANETs 匿名manet协同环境下的分布式声誉管理
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400612
T. Ciszkowski, Zbigniew Kotulski
{"title":"Distributed Reputation Management in Collaborative Environment of Anonymous MANETs","authors":"T. Ciszkowski, Zbigniew Kotulski","doi":"10.1109/EURCON.2007.4400612","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400612","url":null,"abstract":"Mobile ad hoc networks (MANET) due to its innate capabilities of instant communication in many time and mission critical applications recently received a significant researchers' attention. For already identified security vulnerabilities in a wireless environment, such as MANET, a set of countermeasures were proposed. However, only a few of them provide an anonymity guaranty which is an orthogonal to security critical challenge we faced in this paper. We present a new distributed reputation system designed for the anonymous authentication protocol in mobile ad hoc networks (ANAP). The reputation system is incorporated for a trust management and malicious behavior detection in the network where an anonymity support is a major objective. An evaluation of the reputation model is conducted with simulation results based on OMNeT++ environment.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"46 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134522433","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: 11
Signal Processing Method by Introducing Fuzzy Theory and Its Application to Electromagnetic and Sound Environments 引入模糊理论的信号处理方法及其在电磁和声环境中的应用
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400411
A. Ikuta, M. Ohta
{"title":"Signal Processing Method by Introducing Fuzzy Theory and Its Application to Electromagnetic and Sound Environments","authors":"A. Ikuta, M. Ohta","doi":"10.1109/EURCON.2007.4400411","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400411","url":null,"abstract":"In general, analyses of phenomena in an electromagnetic and sound environments showing various types of complex fluctuation form can be classified into two categories. One is the analysis method from the bottom-up viewpoint, and the other is the method based on the top-down viewpoint. The former is a method structurally based on the physical mechanism existing in the phenomena. The latter method lays the stress on a functional viewpoint connected with the human response to environmental phenomena, in order to obtain an evaluation of the phenomena even in cases of an unknown or uncertain structural mechanism. In this study, from the latter viewpoint, we propose a signal processing method utilizing fuzzy theory to be applied to actual electromagnetic and sound environmental phenomena. The validity of the proposed method is experimentally confirmed by applying it to observed electromagnetic and sound data in the actual working environments, as two typical examples of phenomena difficult to partition into crisp sets by means of a threshold.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133893550","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
Pareto Analysis of Controller Design Methodologies for Integrator plus Dead Time Processes 积分器加死时间过程控制器设计方法的Pareto分析
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400687
M. Rapson
{"title":"Pareto Analysis of Controller Design Methodologies for Integrator plus Dead Time Processes","authors":"M. Rapson","doi":"10.1109/EURCON.2007.4400687","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400687","url":null,"abstract":"Controller design methodologies are commonly compared by publishing examples of individual controllers that were designed using competing approaches. In this paper, Pareto analysis is used to compare three methods of designing controllers for integrating second order plus dead time processes -a problem that has been discussed in the literature. The analysis shows that, in the example chosen, superior performance can be attained by adjusting the approach to tuning controllers. Solutions found by Pareto analysis that improve performance may be directly implemented. This finding demonstrates the usefulness of Pareto analysis in Control engineering, as either a design or research technique.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133962198","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
Multi path Model for Power Line Communication Channel in the Frequency Range of 1MHz-30MHz 1MHz-30MHz频率范围内电力线通信信道的多径模型
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400234
C. Konate, M. Machmoum, J. Diouris
{"title":"Multi path Model for Power Line Communication Channel in the Frequency Range of 1MHz-30MHz","authors":"C. Konate, M. Machmoum, J. Diouris","doi":"10.1109/EURCON.2007.4400234","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400234","url":null,"abstract":"High speed data transfer on the Power Line is more and more used in the communication systems. This paper's aim is to present a comparison between two approaches of modeling of the transmission channel in the frequency range of 1 MHz -30 MHz : the top-down approach and the bottom-up approach. For the comparison, a simple electrical supply network made between the transmitter and the receiver is considered.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131761937","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: 23
Neural Networks Arbitration for Optimum DCT Image Compression 优化DCT图像压缩的神经网络仲裁
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400236
A. Khashman, Kamil Dimililer
{"title":"Neural Networks Arbitration for Optimum DCT Image Compression","authors":"A. Khashman, Kamil Dimililer","doi":"10.1109/EURCON.2007.4400236","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400236","url":null,"abstract":"Image compression using Discrete Cosine Transform (DCT) is one of the simplest commonly used compression methods. The quality of compressed images, however, is marginally reduced at higher compression ratios due to the lossy nature of DCT compression, thus, the need for finding an optimum DCT compression ratio. An ideal image compression system must yield high quality compressed images with good compression ratio, while maintaining minimum time cost. Neural networks perform well in simulating non-linear relationships. This paper suggests that a neural network could be trained to recognize an optimum ratio for DCT compression of an image upon presenting the image to the network. The neural network associates the image intensity with its compression ratios in search for an optimum ratio. Experimental results suggest that a trained neural network can simulate such non-linear relationship and thus can be successfully used to provide an intelligent optimum image compression system.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132619518","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: 32
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