Pub Date : 2012-05-15DOI: 10.1109/IRANIANCEE.2012.6292586
A. Allahyari, M. Rashidpour, M. Rasti
In cognitive radio networks, coexistence of primary users (licensed users) and secondary users needs a power control algorithm employed by secondary users to avoid harmful interference and guarantee acceptable minimum signal-to-interference-plus-noise ratio (SINR) to the primary users. In this paper we present a centralized cooperative power control algorithm for cognitive radio networks in which a Central Base Station (CBS) collects secondary users' side-information and finds maximum number of secondary users who can achieve their target-SINRs while their total interference caused to primary users is kept bellow a given threshold. In our proposed algorithm each secondary user upon detecting a primary receiver estimates its location (distance and direction) with respect to the detected primary receivers and sends this side-information to the CBS. Assuming that, CBS knows locations of secondary users; CBS employ our proposed power control algorithm to find as many as possible secondary users who can coexist with primary users. Our simulation results show that complexity of our proposed algorithm is very low as compared to the exhaustive-search and it results in maximum number of supported secondary users (those who can reach their target-SINRs) keeping their total interference to primary users bellow a given threshold.
{"title":"A centralized cooperative power control algorithm for cognitive radio networks","authors":"A. Allahyari, M. Rashidpour, M. Rasti","doi":"10.1109/IRANIANCEE.2012.6292586","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2012.6292586","url":null,"abstract":"In cognitive radio networks, coexistence of primary users (licensed users) and secondary users needs a power control algorithm employed by secondary users to avoid harmful interference and guarantee acceptable minimum signal-to-interference-plus-noise ratio (SINR) to the primary users. In this paper we present a centralized cooperative power control algorithm for cognitive radio networks in which a Central Base Station (CBS) collects secondary users' side-information and finds maximum number of secondary users who can achieve their target-SINRs while their total interference caused to primary users is kept bellow a given threshold. In our proposed algorithm each secondary user upon detecting a primary receiver estimates its location (distance and direction) with respect to the detected primary receivers and sends this side-information to the CBS. Assuming that, CBS knows locations of secondary users; CBS employ our proposed power control algorithm to find as many as possible secondary users who can coexist with primary users. Our simulation results show that complexity of our proposed algorithm is very low as compared to the exhaustive-search and it results in maximum number of supported secondary users (those who can reach their target-SINRs) keeping their total interference to primary users bellow a given threshold.","PeriodicalId":308726,"journal":{"name":"20th Iranian Conference on Electrical Engineering (ICEE2012)","volume":"165 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125911311","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 : 2012-05-15DOI: 10.1109/IRANIANCEE.2012.6292365
A. Heidary, R. Taherkhani, G. Meijer
A capacitive measurement system with attofarad resolution is presented. The electronics setup consists of a capacitive sensor interface with period-modulated output and a microcontroller board with 70 MHz clock to read out the output period. The electronic interface which is based on a capacitance-to-voltage converter and a relaxation oscillator has been designed and implemented in 0.7 μm standard CMOS technology. The measured data is transferred to a computer via RS232 port and analyzed in a Labview program. The resolution of about 1.5 aF is achieved for a range of 1 pF and a measurement time of 1 s. The highest resolution which can be achieved is about 0.5 aF for a measurement time of about 10 s.
{"title":"A capacitance measurement system with milliwatt power and attofarad resolution","authors":"A. Heidary, R. Taherkhani, G. Meijer","doi":"10.1109/IRANIANCEE.2012.6292365","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2012.6292365","url":null,"abstract":"A capacitive measurement system with attofarad resolution is presented. The electronics setup consists of a capacitive sensor interface with period-modulated output and a microcontroller board with 70 MHz clock to read out the output period. The electronic interface which is based on a capacitance-to-voltage converter and a relaxation oscillator has been designed and implemented in 0.7 μm standard CMOS technology. The measured data is transferred to a computer via RS232 port and analyzed in a Labview program. The resolution of about 1.5 aF is achieved for a range of 1 pF and a measurement time of 1 s. The highest resolution which can be achieved is about 0.5 aF for a measurement time of about 10 s.","PeriodicalId":308726,"journal":{"name":"20th Iranian Conference on Electrical Engineering (ICEE2012)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121076981","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 : 2012-05-15DOI: 10.1109/IRANIANCEE.2012.6292449
S. Mostafavi, A. Amiri
A data stream is an ordered and continuous sequence of examples that can be examined only once. Data stream mining introduces new challenges compared to traditional mining algorithms. Fuzzy c-means (FCM) is a method of clustering in which a data point can assign to more than one cluster at the same time. In this paper we extend FCM algorithm to clustering data streams. Our performance experiments over KDD-CUP'99 data set show the efficiency of the algorithm.
{"title":"Extending fuzzy c-means to clustering data streams","authors":"S. Mostafavi, A. Amiri","doi":"10.1109/IRANIANCEE.2012.6292449","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2012.6292449","url":null,"abstract":"A data stream is an ordered and continuous sequence of examples that can be examined only once. Data stream mining introduces new challenges compared to traditional mining algorithms. Fuzzy c-means (FCM) is a method of clustering in which a data point can assign to more than one cluster at the same time. In this paper we extend FCM algorithm to clustering data streams. Our performance experiments over KDD-CUP'99 data set show the efficiency of the algorithm.","PeriodicalId":308726,"journal":{"name":"20th Iranian Conference on Electrical Engineering (ICEE2012)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121143839","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 : 2012-05-15DOI: 10.1109/IRANIANCEE.2012.6292608
A. Falaki, F. Towhidkhah
Impedance control is described as the ability to modify characteristics of musculoskeletal impedance by the motor control system. This ability plays a significant role in posture control and fulfilling movements, in particular, at the presence of environmental disturbances. In addition, learning ability in human movement necessitates incorporating a type of model for environment and/or musculoskeletal system. In this study a fuzzy supervisory controller unit is suggested to coordinate impedance and model based control strategies. Results from computer simulations showed that both suitable impedance values and a proper internal model are required to fulfill movements similar to those of humans under different circumstances. This study showed that beside this modulation, the maximum motor learning may occur in direction with the least impedance and the most kinematic error. It also concluded that confronting abrupt changes in disturbance, the system managed to decrease error without learning the new dynamic using previous knowledge by supervisory system. A part of this compensation is due to stiffness variations and another part is due to decreasing the influence of model based controller.
{"title":"Supervisory model predictive impedance control for human arm movement","authors":"A. Falaki, F. Towhidkhah","doi":"10.1109/IRANIANCEE.2012.6292608","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2012.6292608","url":null,"abstract":"Impedance control is described as the ability to modify characteristics of musculoskeletal impedance by the motor control system. This ability plays a significant role in posture control and fulfilling movements, in particular, at the presence of environmental disturbances. In addition, learning ability in human movement necessitates incorporating a type of model for environment and/or musculoskeletal system. In this study a fuzzy supervisory controller unit is suggested to coordinate impedance and model based control strategies. Results from computer simulations showed that both suitable impedance values and a proper internal model are required to fulfill movements similar to those of humans under different circumstances. This study showed that beside this modulation, the maximum motor learning may occur in direction with the least impedance and the most kinematic error. It also concluded that confronting abrupt changes in disturbance, the system managed to decrease error without learning the new dynamic using previous knowledge by supervisory system. A part of this compensation is due to stiffness variations and another part is due to decreasing the influence of model based controller.","PeriodicalId":308726,"journal":{"name":"20th Iranian Conference on Electrical Engineering (ICEE2012)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115299012","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 : 2012-05-15DOI: 10.1109/IRANIANCEE.2012.6292454
R. Soleymani, M. Amirani
A hybrid fingerprint matching framework is proposed in this paper that handles fingerprint distortions and has less computational complexity. For this purpose a dual part algorithm is proposed that processes the global matched fingerprints and local matched fingerprints individually. Two polygons are generated from the outer boundaries of the Delaunay triangulation of the fingerprints. Then, they are compared to determine whether the fingerprints are globally matched or not. If they are globally matched, the central Voronoi cells of fingerprints are compared and after that, the triangles and minutiae corresponding to the matched cells are analysed. If the fingerprints are not globally matched, they are compared locally. This part of the algorithm starts with random triangles from the input and the template fingerprints. If they are matched, the cells and minutiae corresponding to the matched triangles are compared. The algorithm continues processing till the number of matched triangles reaches a predetermined number, so that the fingerprints are reported as matched. The thresholds are dynamically selected according to the characteristics of the fingerprints. On the other hand, the features proposed in this manuscript are invariant to translation and rotation. The algorithm is evaluated on three different databases and the results indicate better performance than the previous methods.
{"title":"A hybrid fingerprint matching algorithm using Delaunay triangulation and Voronoi diagram","authors":"R. Soleymani, M. Amirani","doi":"10.1109/IRANIANCEE.2012.6292454","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2012.6292454","url":null,"abstract":"A hybrid fingerprint matching framework is proposed in this paper that handles fingerprint distortions and has less computational complexity. For this purpose a dual part algorithm is proposed that processes the global matched fingerprints and local matched fingerprints individually. Two polygons are generated from the outer boundaries of the Delaunay triangulation of the fingerprints. Then, they are compared to determine whether the fingerprints are globally matched or not. If they are globally matched, the central Voronoi cells of fingerprints are compared and after that, the triangles and minutiae corresponding to the matched cells are analysed. If the fingerprints are not globally matched, they are compared locally. This part of the algorithm starts with random triangles from the input and the template fingerprints. If they are matched, the cells and minutiae corresponding to the matched triangles are compared. The algorithm continues processing till the number of matched triangles reaches a predetermined number, so that the fingerprints are reported as matched. The thresholds are dynamically selected according to the characteristics of the fingerprints. On the other hand, the features proposed in this manuscript are invariant to translation and rotation. The algorithm is evaluated on three different databases and the results indicate better performance than the previous methods.","PeriodicalId":308726,"journal":{"name":"20th Iranian Conference on Electrical Engineering (ICEE2012)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130125621","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 : 2012-05-15DOI: 10.1109/IRANIANCEE.2012.6292432
A. Hajiannezhad, S. Mozaffari
This paper is dealing with font recognition problem in Farsi, Arabic, and English documents. It considers font recognition as texture identification task and the extracted features are independent of document content. The proposed method is based on one of the fractal dimension techniques which is called Variogram Analysis. The average recognition rates using RBF, and KNN classifiers are respectively %95.5, %96 for Farsi fonts, and % 96.9, %98.84 for Arabic fonts, and % 98.21, %99.6 for English fonts. The most important advantages of our algorithm are low feature dimensions, low computational complexity, and high speed compared with the previous efforts.
{"title":"Font recognition using Variogram fractal dimension","authors":"A. Hajiannezhad, S. Mozaffari","doi":"10.1109/IRANIANCEE.2012.6292432","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2012.6292432","url":null,"abstract":"This paper is dealing with font recognition problem in Farsi, Arabic, and English documents. It considers font recognition as texture identification task and the extracted features are independent of document content. The proposed method is based on one of the fractal dimension techniques which is called Variogram Analysis. The average recognition rates using RBF, and KNN classifiers are respectively %95.5, %96 for Farsi fonts, and % 96.9, %98.84 for Arabic fonts, and % 98.21, %99.6 for English fonts. The most important advantages of our algorithm are low feature dimensions, low computational complexity, and high speed compared with the previous efforts.","PeriodicalId":308726,"journal":{"name":"20th Iranian Conference on Electrical Engineering (ICEE2012)","volume":"33 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113992063","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 : 2012-05-15DOI: 10.1109/IRANIANCEE.2012.6292588
H. Taleb, K. Abedi, S. Golmohammadi
In this paper, a comparison is made between the gain response of a quantum-dot semiconductor optical amplifier (QD-SOA) under three different pumping schemes (optical, electrical, and electro-optical). We found that under equal pumping powers, the electrical pumping scheme is more efficient than optical and electro-optical ones. Simulation results show that the electrical pumping scheme not only provides a higher optical gain compared to two other schemes, but also reduces the gain recovery time of the QD-SOA. Furthermore, the practical implementation of electrical pumping scheme is much simpler than two other ones.
{"title":"Dynamic response of quantum-dot semiconductor optical amplifiers electrical, optical, and electro-optical pumping schemes","authors":"H. Taleb, K. Abedi, S. Golmohammadi","doi":"10.1109/IRANIANCEE.2012.6292588","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2012.6292588","url":null,"abstract":"In this paper, a comparison is made between the gain response of a quantum-dot semiconductor optical amplifier (QD-SOA) under three different pumping schemes (optical, electrical, and electro-optical). We found that under equal pumping powers, the electrical pumping scheme is more efficient than optical and electro-optical ones. Simulation results show that the electrical pumping scheme not only provides a higher optical gain compared to two other schemes, but also reduces the gain recovery time of the QD-SOA. Furthermore, the practical implementation of electrical pumping scheme is much simpler than two other ones.","PeriodicalId":308726,"journal":{"name":"20th Iranian Conference on Electrical Engineering (ICEE2012)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127711269","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 : 2012-05-15DOI: 10.1109/IRANIANCEE.2012.6292423
A. A. Heris, E. Babaei, S. H. Hosseini
This paper proposes a new topology for active power filter (APF). In the proposed topology, the employment of an indirect matrix converter (IMC) as a part of shunt active filter has been investigated. Using the proposed IMC based APF, the dc link capacitor can be removed and also the average of dc link voltage can decrease in 1.5 times of the peak of source voltage. Furthermore, in this paper a new control method based on instantaneous power theory or P-Q theory and predictive current control for proposed APF is presented. In the proposed control method, there is no need to control the voltage of dc link and the average of voltage is always constant. Using PWM based control strategy, the injected harmonics will be produced around and more than switching frequency and the size of filters will be decreased. The simulation results obtained from PSCAD/EMTDC software confirm the validation of the proposed topology advantages and its control method.
{"title":"A new shunt active power filter based on indirect matrix converter","authors":"A. A. Heris, E. Babaei, S. H. Hosseini","doi":"10.1109/IRANIANCEE.2012.6292423","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2012.6292423","url":null,"abstract":"This paper proposes a new topology for active power filter (APF). In the proposed topology, the employment of an indirect matrix converter (IMC) as a part of shunt active filter has been investigated. Using the proposed IMC based APF, the dc link capacitor can be removed and also the average of dc link voltage can decrease in 1.5 times of the peak of source voltage. Furthermore, in this paper a new control method based on instantaneous power theory or P-Q theory and predictive current control for proposed APF is presented. In the proposed control method, there is no need to control the voltage of dc link and the average of voltage is always constant. Using PWM based control strategy, the injected harmonics will be produced around and more than switching frequency and the size of filters will be decreased. The simulation results obtained from PSCAD/EMTDC software confirm the validation of the proposed topology advantages and its control method.","PeriodicalId":308726,"journal":{"name":"20th Iranian Conference on Electrical Engineering (ICEE2012)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127931511","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 : 2012-05-15DOI: 10.1109/IRANIANCEE.2012.6292361
H. Ariyadoost, Y. Kavian, K. Ansari-Asl
The aim of this paper is to hardware description and implementing of adaptive digital one- dimensional (1-D) and two-dimensional (2-D) Finite Impulse Response (FIR) filters on Field Programmable Gate Array (FPGA) technology. The 2-D adaptive filter is particularly employed for image processing applications and a typical adaptive image noise cancellation application is considered. The delayed least mean square (DLMS) algorithm is used for updating filter weights in dynamic unknown environments. Some cell processors consisting a tree based systolic architecture are employed for improving speed of proposed 2-D filter for noisy image processing. The VHDL hardware description language is employed for modeling and hardware description of different schemes of filtering applications. The obtained results from the QUARTUS II tool on STRATIX II EP2S15F484C3 chip from ALTERA Inc. demonstrate a satisfactory performance of 2-D adaptive FIR filter for image noise cancellation in some wellknown image test-bench.
本文的目的是在现场可编程门阵列(FPGA)技术上对自适应数字一维(1-D)和二维(2-D)有限脉冲响应(FIR)滤波器进行硬件描述和实现。二维自适应滤波器特别用于图像处理应用，并考虑了典型的自适应图像噪声消除应用。采用延迟最小均方(DLMS)算法更新动态未知环境下的滤波器权值。为了提高所提出的二维噪声图像滤波的处理速度，采用了基于树型收缩结构的单元处理器。采用VHDL硬件描述语言对过滤应用的不同方案进行建模和硬件描述。在ALTERA公司的STRATIX II EP2S15F484C3芯片上使用QUARTUS II工具获得的结果表明，二维自适应FIR滤波器在一些知名的图像试验台中具有令人满意的图像消噪性能。
{"title":"Two dimensional systolic adaptive DLMS FIR filters for image processing on FPGA","authors":"H. Ariyadoost, Y. Kavian, K. Ansari-Asl","doi":"10.1109/IRANIANCEE.2012.6292361","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2012.6292361","url":null,"abstract":"The aim of this paper is to hardware description and implementing of adaptive digital one- dimensional (1-D) and two-dimensional (2-D) Finite Impulse Response (FIR) filters on Field Programmable Gate Array (FPGA) technology. The 2-D adaptive filter is particularly employed for image processing applications and a typical adaptive image noise cancellation application is considered. The delayed least mean square (DLMS) algorithm is used for updating filter weights in dynamic unknown environments. Some cell processors consisting a tree based systolic architecture are employed for improving speed of proposed 2-D filter for noisy image processing. The VHDL hardware description language is employed for modeling and hardware description of different schemes of filtering applications. The obtained results from the QUARTUS II tool on STRATIX II EP2S15F484C3 chip from ALTERA Inc. demonstrate a satisfactory performance of 2-D adaptive FIR filter for image noise cancellation in some wellknown image test-bench.","PeriodicalId":308726,"journal":{"name":"20th Iranian Conference on Electrical Engineering (ICEE2012)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132926251","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 : 2012-05-15DOI: 10.1109/IRANIANCEE.2012.6292446
M. Soleimanpour-moghadam, H. Nezamabadi-pour
Quantum-behaved Gravitational Search Algorithm (QGSA), a novel variant of GSA, is a global convergent algorithm whose search strategy makes it own stronger global search ability than classical GSA over unimodal problems. Like some other evolutionary optimization technique, premature convergence in the QGSA is also. In this paper, we propose a new kind of potential well evaluation, with a center which is weighted average of all Kbests based on their masses and distances. As results shown it helps the agent to escape the sub-optima more easily. The improved QGSA is evaluated on some benchmark function and results are reported.
{"title":"An improved quantum behaved gravitational search algorithm","authors":"M. Soleimanpour-moghadam, H. Nezamabadi-pour","doi":"10.1109/IRANIANCEE.2012.6292446","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2012.6292446","url":null,"abstract":"Quantum-behaved Gravitational Search Algorithm (QGSA), a novel variant of GSA, is a global convergent algorithm whose search strategy makes it own stronger global search ability than classical GSA over unimodal problems. Like some other evolutionary optimization technique, premature convergence in the QGSA is also. In this paper, we propose a new kind of potential well evaluation, with a center which is weighted average of all Kbests based on their masses and distances. As results shown it helps the agent to escape the sub-optima more easily. The improved QGSA is evaluated on some benchmark function and results are reported.","PeriodicalId":308726,"journal":{"name":"20th Iranian Conference on Electrical Engineering (ICEE2012)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133560199","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：