Pub Date : 2011-06-01DOI: 10.1109/IWECMS.2011.5952377
R. Salman, V. Kecman
Paper introduces the 2-stage k-means algorithm which is faster than the standard 1-stage k-means algorithm. The main idea of the 2-stages is to move, in the first stage (fast), the centers of the clusters closer to their final locations. This will be done by using a small part of the data to achieve faster calculation. The next stage (slow) stage will start from the centers found during the first stage (fast). Different initial locations of the clusters have been used while testing the algorithms here. With bigger datasets, it is shown that the 2-stage clustering method achieves better speed-up.
{"title":"The effect of cluster location and dataset size on 2-stage k-means algorithm","authors":"R. Salman, V. Kecman","doi":"10.1109/IWECMS.2011.5952377","DOIUrl":"https://doi.org/10.1109/IWECMS.2011.5952377","url":null,"abstract":"Paper introduces the 2-stage k-means algorithm which is faster than the standard 1-stage k-means algorithm. The main idea of the 2-stages is to move, in the first stage (fast), the centers of the clusters closer to their final locations. This will be done by using a small part of the data to achieve faster calculation. The next stage (slow) stage will start from the centers found during the first stage (fast). Different initial locations of the clusters have been used while testing the algorithms here. With bigger datasets, it is shown that the 2-stage clustering method achieves better speed-up.","PeriodicalId":211450,"journal":{"name":"2011 10th International Workshop on Electronics, Control, Measurement and Signals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126002391","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}
Pub Date : 2011-06-01DOI: 10.1109/IWECMS.2011.5952371
W. Che, Kyong-Woo Kim, H. Kwon
The performance of a two-optical-fiber intensity-modulated sensor depends on the geometrical parameters of the sensors. A significant improvement in the performance is expected if the transmitting and receiving sfibers are configured in inclined feature instead of being configured in parallel feature. The linear operating range and sensor sensitivity depend on the angle between transmitting and receiving fibers, core and fiber radius, and inter-fiber spacing. Moreover, the intensity function plays an important role in designing multimode optical fiber sensor, especially, in designing two-optical-fiber intensity-modulated sensor. As being a design parameter of the sensor, it is essential in determining the sensor sensitivity due to the reflected power changes. The mathematical model of the intensity function applicable to inclined geometrical configurations is developed and simulated responses are studied. Experimental validation of the mathematical model is performed using carefully designed experiments. The simulated responses and the experiment results are compared with the responses of another mathematical model which was developed by Gang He.
{"title":"An intensity function for inclined multimode optical fiber sensors","authors":"W. Che, Kyong-Woo Kim, H. Kwon","doi":"10.1109/IWECMS.2011.5952371","DOIUrl":"https://doi.org/10.1109/IWECMS.2011.5952371","url":null,"abstract":"The performance of a two-optical-fiber intensity-modulated sensor depends on the geometrical parameters of the sensors. A significant improvement in the performance is expected if the transmitting and receiving sfibers are configured in inclined feature instead of being configured in parallel feature. The linear operating range and sensor sensitivity depend on the angle between transmitting and receiving fibers, core and fiber radius, and inter-fiber spacing. Moreover, the intensity function plays an important role in designing multimode optical fiber sensor, especially, in designing two-optical-fiber intensity-modulated sensor. As being a design parameter of the sensor, it is essential in determining the sensor sensitivity due to the reflected power changes. The mathematical model of the intensity function applicable to inclined geometrical configurations is developed and simulated responses are studied. Experimental validation of the mathematical model is performed using carefully designed experiments. The simulated responses and the experiment results are compared with the responses of another mathematical model which was developed by Gang He.","PeriodicalId":211450,"journal":{"name":"2011 10th International Workshop on Electronics, Control, Measurement and Signals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127681461","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}
Pub Date : 2011-06-01DOI: 10.1109/IWECMS.2011.5952373
M. Bohac, Karel Blavka
The paper deals with automatic processing of spoken documents from the Czech Radio archive that contains hundreds of thousands of audio recordings. The ultimate goal of the project is to transcribe them and to allow the public access to their content. In this paper, we focus on processing of those documents that have been already transcribed (by humans or in another way) and are to be synchronized (time aligned) with the text. We aim at developing a method that is time efficient and at the same time robust enough to incorrect or incomplete transcriptions. The method is based on the combination of two speech recognition techniques. The first one, a word spotting method searches for selected words in the transcription and proposes points where the document can be split into shorter and homogenous segments covered by the text transcription. For them, we utilize a modified forced-alignment procedure to get time stamps for each word in the transcription. The method runs with 0.5 real-time factor and yields 95.5% word alignment precision. So far, it has been used for transcribing and indexing more than 552 hours of archive recordings.
{"title":"Automatic segmentation and annotation of audio archive documents","authors":"M. Bohac, Karel Blavka","doi":"10.1109/IWECMS.2011.5952373","DOIUrl":"https://doi.org/10.1109/IWECMS.2011.5952373","url":null,"abstract":"The paper deals with automatic processing of spoken documents from the Czech Radio archive that contains hundreds of thousands of audio recordings. The ultimate goal of the project is to transcribe them and to allow the public access to their content. In this paper, we focus on processing of those documents that have been already transcribed (by humans or in another way) and are to be synchronized (time aligned) with the text. We aim at developing a method that is time efficient and at the same time robust enough to incorrect or incomplete transcriptions. The method is based on the combination of two speech recognition techniques. The first one, a word spotting method searches for selected words in the transcription and proposes points where the document can be split into shorter and homogenous segments covered by the text transcription. For them, we utilize a modified forced-alignment procedure to get time stamps for each word in the transcription. The method runs with 0.5 real-time factor and yields 95.5% word alignment precision. So far, it has been used for transcribing and indexing more than 552 hours of archive recordings.","PeriodicalId":211450,"journal":{"name":"2011 10th International Workshop on Electronics, Control, Measurement and Signals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115509965","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}
Pub Date : 2011-06-01DOI: 10.1109/IWECMS.2011.5952380
K. Nováková, P. Mokry
Numerical simulations of the elastic properties of Macro Fiber Composite (MFC) actuator shunted by an electric circuit with a negative capacitance are presented. If connected in parallel to the piezoelectric plate, the circuit with a negative capacitance has a significant influence on the elastic parameters of the piezoelectric actuator. Such an effect can be profitably used for a vibration and noise suppression, where the piezoelectric element works as an actuator and a sensor at the same time. The major advantages of the piezoelectric fiber composite actuators are their high performance, flexibility, and durability, when compared to the traditional piezoceramic (PZT) actuators. The recently developed MFC actuator provides these advantages and can be used in structural vibration applications. In this study, it is shown that the MFC can be controlled by the circuit with a negative capacitance. Finite Element Method (FEM) approach is used to obtaining frequency spectra of capacitance of MFC actuator and to show the ability to change the effective elastic parameters, when connected to the negative capacitance circuit.
对负电容电路并联的宏纤维复合材料(MFC)作动器的弹性特性进行了数值模拟。当与压电板并联时，负电容电路对压电执行器的弹性参数有显著影响。这种效果可以有效地用于振动和噪声抑制，其中压电元件同时作为执行器和传感器。与传统的压电陶瓷(PZT)致动器相比，压电纤维复合致动器的主要优点是高性能、柔性和耐用性。最近开发的MFC执行器提供了这些优点，可以用于结构振动应用。本研究表明，MFC可以通过负电容电路进行控制。采用有限元法(Finite Element Method, FEM)获得了MFC执行器的电容频谱，显示了MFC执行器与负电容电路连接时有效弹性参数的变化能力。
{"title":"Numerical simulation of mechanical behavior of a Macro Fiber Composite piezoelectric actuator shunted by a negative capacitor","authors":"K. Nováková, P. Mokry","doi":"10.1109/IWECMS.2011.5952380","DOIUrl":"https://doi.org/10.1109/IWECMS.2011.5952380","url":null,"abstract":"Numerical simulations of the elastic properties of Macro Fiber Composite (MFC) actuator shunted by an electric circuit with a negative capacitance are presented. If connected in parallel to the piezoelectric plate, the circuit with a negative capacitance has a significant influence on the elastic parameters of the piezoelectric actuator. Such an effect can be profitably used for a vibration and noise suppression, where the piezoelectric element works as an actuator and a sensor at the same time. The major advantages of the piezoelectric fiber composite actuators are their high performance, flexibility, and durability, when compared to the traditional piezoceramic (PZT) actuators. The recently developed MFC actuator provides these advantages and can be used in structural vibration applications. In this study, it is shown that the MFC can be controlled by the circuit with a negative capacitance. Finite Element Method (FEM) approach is used to obtaining frequency spectra of capacitance of MFC actuator and to show the ability to change the effective elastic parameters, when connected to the negative capacitance circuit.","PeriodicalId":211450,"journal":{"name":"2011 10th International Workshop on Electronics, Control, Measurement and Signals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130905098","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}
Pub Date : 2011-06-01DOI: 10.1109/IWECMS.2011.5952382
D. Samah, J. Rouchon, P. Tierce, B. Ratsimba, H. Delmas
The phenomena engaged in liquid media subjected to high power ultrasonic waves are complex because of the presence of the cavitation phenomenon that allows the transformation of the media. The objective of this study is to detect changes in physical properties of a medium by observing the load impedance of the ultrasonic transducer. In this paper, we try to identify the parameters that are susceptible to disturb that measurement.
{"title":"Experimental investigation on the properties of fluids subjected to high power ultrasonic waves: Identification of perturbing parameters","authors":"D. Samah, J. Rouchon, P. Tierce, B. Ratsimba, H. Delmas","doi":"10.1109/IWECMS.2011.5952382","DOIUrl":"https://doi.org/10.1109/IWECMS.2011.5952382","url":null,"abstract":"The phenomena engaged in liquid media subjected to high power ultrasonic waves are complex because of the presence of the cavitation phenomenon that allows the transformation of the media. The objective of this study is to detect changes in physical properties of a medium by observing the load impedance of the ultrasonic transducer. In this paper, we try to identify the parameters that are susceptible to disturb that measurement.","PeriodicalId":211450,"journal":{"name":"2011 10th International Workshop on Electronics, Control, Measurement and Signals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127563274","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}
Pub Date : 2011-06-01DOI: 10.1109/IWECMS.2011.5952379
J. Linhart, P. Hána, L. Burianova, S. Zhang
The research deals with nonlinear properties of piezoelectric, ferroelectric and mechanical response of the lead-free type ferroelectric ceramics x(Bi0.5 Na0.5) TiO3-y(Bi0.5 K0.5) TiO3-zBaTiO3, where x = 0.79, y = 0.14, and z = 0.07, in short form BNBK79. Small mechanical deformation and polarization measurements are realized using LVDT (Linear Variable Differential Transformer) measuring system. Velocities of ultrasound wave propagation in presence of an external DC electric field are also determined. The orientation of spontaneous polarization can be switched under the action of sufficiently strong electric fields. This causes the nonlinear behaviour of polarization-electric field (D-E), strain-electric field (S-E) and the velocity of ultrasonic waves-electric field (v-E) relationship. Butterfly shape of the responses is observed above the coercive field. The described BNBK79 ceramics is significant candidate for lead-free actuator applications.
研究了无铅型铁电陶瓷x(Bi0.5 Na0.5) TiO3-y(Bi0.5 K0.5) TiO3-zBaTiO3 (x = 0.79, y = 0.14, z = 0.07，简称BNBK79)的压电、铁电和力学响应的非线性特性。利用线性可变差动变压器(LVDT)测量系统实现了微小的机械变形和极化测量。超声波在外部直流电场作用下的传播速度也被确定。在足够强的电场作用下，可以改变自发极化的取向。这导致了极化电场(D-E)、应变电场(S-E)和超声波速度电场(v-E)关系的非线性行为。在矫顽力场上方观察到响应呈蝴蝶状。所描述的BNBK79陶瓷是无铅执行器应用的重要候选者。
{"title":"Hysteresis measurements of lead-free ferroelectric ceramics BNBK79 (Bi0.5Na0.5) TiO3-(Bi0.5K0.5) TiO3-BaTiO3","authors":"J. Linhart, P. Hána, L. Burianova, S. Zhang","doi":"10.1109/IWECMS.2011.5952379","DOIUrl":"https://doi.org/10.1109/IWECMS.2011.5952379","url":null,"abstract":"The research deals with nonlinear properties of piezoelectric, ferroelectric and mechanical response of the lead-free type ferroelectric ceramics x(Bi0.5 Na0.5) TiO3-y(Bi0.5 K0.5) TiO3-zBaTiO3, where x = 0.79, y = 0.14, and z = 0.07, in short form BNBK79. Small mechanical deformation and polarization measurements are realized using LVDT (Linear Variable Differential Transformer) measuring system. Velocities of ultrasound wave propagation in presence of an external DC electric field are also determined. The orientation of spontaneous polarization can be switched under the action of sufficiently strong electric fields. This causes the nonlinear behaviour of polarization-electric field (D-E), strain-electric field (S-E) and the velocity of ultrasonic waves-electric field (v-E) relationship. Butterfly shape of the responses is observed above the coercive field. The described BNBK79 ceramics is significant candidate for lead-free actuator applications.","PeriodicalId":211450,"journal":{"name":"2011 10th International Workshop on Electronics, Control, Measurement and Signals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125627282","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}
Pub Date : 2011-06-01DOI: 10.1109/IWECMS.2011.5952367
J. Llibre, N. Martinez, B. Nogarede, P. Leprince
A linear tubular switched reluctance motor is presented. This actuator is devoted to be used as a left ventricular assist device (LVAD). In order to avoid thrombosis, this actuator includes pump and valve functions. By using a St. Jude Medical mechanical valve inside the tubular mover, a pulsatile flow is created in the descending aorta. A linear model of a basic pattern of the actuator based on a reluctance network is developed. Then, a two dimensions finite element method analysis is performed in order to check the analytically calculated performances. Relying on these both models, specific requirements for the design of this kind of motor are discussed.
{"title":"Linear tubular switched reluctance motor for heart assistance circulatory: Analytical and finite element modeling","authors":"J. Llibre, N. Martinez, B. Nogarede, P. Leprince","doi":"10.1109/IWECMS.2011.5952367","DOIUrl":"https://doi.org/10.1109/IWECMS.2011.5952367","url":null,"abstract":"A linear tubular switched reluctance motor is presented. This actuator is devoted to be used as a left ventricular assist device (LVAD). In order to avoid thrombosis, this actuator includes pump and valve functions. By using a St. Jude Medical mechanical valve inside the tubular mover, a pulsatile flow is created in the descending aorta. A linear model of a basic pattern of the actuator based on a reluctance network is developed. Then, a two dimensions finite element method analysis is performed in order to check the analytically calculated performances. Relying on these both models, specific requirements for the design of this kind of motor are discussed.","PeriodicalId":211450,"journal":{"name":"2011 10th International Workshop on Electronics, Control, Measurement and Signals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124758056","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}
Pub Date : 2011-06-01DOI: 10.1109/IWECMS.2011.5952372
Martin Chloupek, O. Novák
The high test data volume and long test application time are two major concerns for testing scan based circuits. Broadcast-based test compression techniques can reduce both the test data volume and test application time. Pattern overlapping test compression techniques are proven to be highly effective in the test data volume reduction. This paper presents a new test compression and test application approach that combines both the test pattern overlapping technique and the test pattern broadcasting technique. This paper will illustrate that these new techniques are effective in both the test application time and the test data volume reduction.
{"title":"Test pattern compression based on pattern overlapping and broadcasting","authors":"Martin Chloupek, O. Novák","doi":"10.1109/IWECMS.2011.5952372","DOIUrl":"https://doi.org/10.1109/IWECMS.2011.5952372","url":null,"abstract":"The high test data volume and long test application time are two major concerns for testing scan based circuits. Broadcast-based test compression techniques can reduce both the test data volume and test application time. Pattern overlapping test compression techniques are proven to be highly effective in the test data volume reduction. This paper presents a new test compression and test application approach that combines both the test pattern overlapping technique and the test pattern broadcasting technique. This paper will illustrate that these new techniques are effective in both the test application time and the test data volume reduction.","PeriodicalId":211450,"journal":{"name":"2011 10th International Workshop on Electronics, Control, Measurement and Signals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130798853","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}
Pub Date : 2011-06-01DOI: 10.1109/IWECMS.2011.5952370
J. Málek, Zbyněk Koldovský
This paper deals with several modifications of an existing Blind Audio Source Separation (BASS) method called T-ABCD. The method applies Independent Component Analysis (ICA) in the time-domain, which gives independent components of individual signals that form unknown groups. The need is to recover these groups using a clustering algorithm and a similarity measure, and reconstruct the separated signals from the groups then. In this paper, several novel criteria that are suitable to measure the similarity between audio components are proposed. Next, fuzzy clustering algorithms are applied to group the components, and novel reconstruction approaches relying on proper weighting of components are proposed. The proposed modifications are compared by experiments, and conclusions are drawn.
{"title":"Fuzzy clustering of independent components within time-domain blind audio source separation method","authors":"J. Málek, Zbyněk Koldovský","doi":"10.1109/IWECMS.2011.5952370","DOIUrl":"https://doi.org/10.1109/IWECMS.2011.5952370","url":null,"abstract":"This paper deals with several modifications of an existing Blind Audio Source Separation (BASS) method called T-ABCD. The method applies Independent Component Analysis (ICA) in the time-domain, which gives independent components of individual signals that form unknown groups. The need is to recover these groups using a clustering algorithm and a similarity measure, and reconstruct the separated signals from the groups then. In this paper, several novel criteria that are suitable to measure the similarity between audio components are proposed. Next, fuzzy clustering algorithms are applied to group the components, and novel reconstruction approaches relying on proper weighting of components are proposed. The proposed modifications are compared by experiments, and conclusions are drawn.","PeriodicalId":211450,"journal":{"name":"2011 10th International Workshop on Electronics, Control, Measurement and Signals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130129824","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}
Pub Date : 2011-06-01DOI: 10.1109/IWECMS.2011.5952369
P. Joly
For retrieval purposes, large amounts of audiovisual contents are indexed before being stored. For recommendation systems as well as for a simple usage of a search engine, some information on the similarity between two contents is required in order to identify relevant contents. But the concept of similarity can be interpreted under many points of views. We will present three different and original approaches developed at the IRIT in order to associate a value to the similarity. The first one considers that the similarity consists in a similar temporal evolution of a subset of descriptors. This leads to determine the subset of features which can be used for the evaluation. The second one consists in considering the way events are organized along the temporal dimension. Similar correlations between events are likely to highlight a global similarity between two contents. The last approach consists in involving the end user in the similarity definition. For two different tasks, one may consider that two documents considered as similar for the first one, are not similar anymore for the second one. We propose an interface where the user set the position of small set of documents on the computer screen. The more the contents are similar, the closer they are expected to be one with each other. The system then tries to extract from that configuration rules which could express the similarity nature and then apply them to the whole content set in order to show it on the screen in an organized manner.
{"title":"Similarity between audiovisual contents","authors":"P. Joly","doi":"10.1109/IWECMS.2011.5952369","DOIUrl":"https://doi.org/10.1109/IWECMS.2011.5952369","url":null,"abstract":"For retrieval purposes, large amounts of audiovisual contents are indexed before being stored. For recommendation systems as well as for a simple usage of a search engine, some information on the similarity between two contents is required in order to identify relevant contents. But the concept of similarity can be interpreted under many points of views. We will present three different and original approaches developed at the IRIT in order to associate a value to the similarity. The first one considers that the similarity consists in a similar temporal evolution of a subset of descriptors. This leads to determine the subset of features which can be used for the evaluation. The second one consists in considering the way events are organized along the temporal dimension. Similar correlations between events are likely to highlight a global similarity between two contents. The last approach consists in involving the end user in the similarity definition. For two different tasks, one may consider that two documents considered as similar for the first one, are not similar anymore for the second one. We propose an interface where the user set the position of small set of documents on the computer screen. The more the contents are similar, the closer they are expected to be one with each other. The system then tries to extract from that configuration rules which could express the similarity nature and then apply them to the whole content set in order to show it on the screen in an organized manner.","PeriodicalId":211450,"journal":{"name":"2011 10th International Workshop on Electronics, Control, Measurement and Signals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124822907","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}
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