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检索条件"主题词=BP algorithm"

共 416 条记录，以下是11-20 订阅

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Prediction of Oilfield Cementing Quality Based on Levenberg-Marquardt bp algorithm

Prediction of Oilfield Cementing Quality Based on Levenberg-...

引用

1st International Conference on High Performance Structures and Materials Engineering

作者： Wang Yuxue Zhou Shaohua NE Petr Univ Sch Math Sci & Engn Daqing Heilongjiang Peoples R China

In this paper an improved algorithm of bp neural network - Levenberg-Marquardt (LM) algorithm is introduced, and the simulation predictions of oilfield cementing quality is done by using this method. Finally, a practi... 详细信息

ISBN: (纸本)9783037850756

关键词： bp algorithm LM algorithm Cementing Quality Prediction

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Partial Shading Impact on PV Array System and the Hard-Shading Location with bp algorithm 7

Partial Shading Impact on PV Array System and the Hard-Shadi...

引用

7th International Conference on Smart Grid (icSmartGrid)

作者： Yin, Wei Tong, Qinyi Xu, Yang Zhang, Yong Zhou, Yongzhi State Grid Suzhou Power Supply Co Suzhou Peoples R China Zhejiang Univ Coll Elect Engn Hangzhou Peoples R China

ISBN: (纸本)9781728148588

As an important renewable energy source in microgrid, photovoltaic (PV) generation has developed rapidly recently because of the merits of high flexibility and expansibility. But the partial shading from the trees, buildings or clouds easily appears in the large-area PV array system. In this paper, the partial shading impact on the PV array system is analyzed, and the results show that it will reduce the whole output power generation and the hard-shading fault will damage the stability of the PV system. In addition, it is analyzed that the parallel connection is much more advantageous than the series topology in partial shading situation, thus it is advised that the parallel connection should be adopted when the series voltage meet the requirement. Secondly, the hard-shading detection based on voltage sensor configuration is proposed and the hard-shading fault characteristics quantity is analyzed. Thirdly, according to the abovementioned fault feature, the backpropagation (bp) algorithm is adopted to locate the faulty position. Finally, the model is constructed in Matlab/Simulink circumstance to verify the analysis and the data is collected to verify the bp algorithm.

关键词： Partial shading PV array system power generation hard-shadingfault location bp algorithm

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Near Optimal bp algorithm for LDPC-Coded BICM System with EXIT Analysis

Near Optimal BP Algorithm for LDPC-Coded BICM System with EX...

引用

6th International Conference on Wireless Communications, Networking and Mobile Computing (WICOM)

作者： Wang, Ying Xie, Lei Chen, Huifang Wang, Kuang Zhejiang Univ Dept Informat Sci & Elect Engn Hangzhou 310027 Zhejiang Peoples R China

ISBN: (纸本)9781424437092

A near optimal bp (NObp) algorithm for low-density parity-check (LDPC) coded M-ary BICM communication system is proposed in this paper. Due to the good code structure of LDPC code, we derive the NObp algorithm with the generalized distributive law from the generalized M-ary bp algorithm. The simulation results show that the NObp algorithm outperforms the traditional BICM-bp algorithm over both the AWGN and Rayleigh fading channel. And the EXIT chart of two algorithms confirms the superiority and the fast convergence of our proposed NObp algorithm.

关键词： LDPC BICM GDL bp algorithm EXIT chart

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A Novel Fault Diagnosis System for MANET based on Hybrid GA-bp algorithm

A Novel Fault Diagnosis System for MANET based on Hybrid GA-...

引用

4th International Conference on Wireless Communications, Networking and Mobile Computing

作者： Huang, Guangjie Guo, Wei Su, Jian Univ Elect Sci & Technol China Natl Key Lab Commun Chengdu 610054 Peoples R China

ISBN: (纸本)9781424421077

With the fast development of mobile ad hoe networks (MANETs), fault diagnosis has become a critical need to guarantee robust service for various applications. Many techniques have been suggested to solve this problem, but they still cannot satisfy the special need of MANETs. In this paper, we propose a new fault diagnosis system using hybrid GA-bp neural network. The results of simulation demonstrate that the performance of this system is excellent.

关键词： mobile ad hoc network fault diagnosis neural network bp algorithm GA algotithm hybrid algorithm

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A Novel Method for Power Transformer Fault Diagnosis Based on Bat-bp algorithm

A Novel Method for Power Transformer Fault Diagnosis Based o...

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International Conference on Sensing, Diagnostics, Prognostics, and Control (SDPC)

作者： Dong, Huanyu Yang, Xiaohui Li, Anyi Nanchang Univ Coll Qianhu Nanchang Jiangxi Peoples R China Nanchang Univ Coll Informat Engn Nanchang Jiangxi Peoples R China

ISBN: (纸本)9781538660577

This paper proposes a hybrid Bat-bp approach based on dissolved gas-in-oil data set (DGA) to optimize the structure of back propagation neural network (bpNN). bpNN is a multilayer feed forward neural network. The rule of local decline that bpNN used is easy to fall into local optimum. Bat algorithm is a metaheuristic bionic algorithm with great local performance, which is adopted to optimize the initial value of bpNN. The recommended Bat-bp method has been employed in power transformer fault diagnosis for the first time. To prove the proposed method has better ability of power transformer fault diagnosis, this paper compares the fitness of Bat-bp with bpNN and other optimized approaches including PSO-bp, GA-bp based on the same DGA data set. The mean squared error (MSE) is used in this paper to evaluate the performance of the total four methods. The experimental results show the Bat-bp has increased the fault diagnosis accuracy from 75.68% to 95.22%, which is higher than those optimized models.

关键词： Bat algorithm Bat-bp algorithm bp algorithm Power Transformer Fault diagnosis

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The Application of Improved bp algorithm in Intrusion Detection

The Application of Improved BP Algorithm in Intrusion Detect...

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International Symposium on Information Science and Engineering

作者： He, Minwei Ma, Xuewei Guangdong Univ Business Studies Informat Sch Guangzhou 510320 Guangdong Peoples R China FLEETY Commun Ltd Shanghai 201203 Peoples R China

ISBN: (纸本)9780769534947

Intrusion detection plays an important part in network security today. bp algorithm which is an algorithm in artificial intelligences can also be used in IDS. This paper make use of improved bp algorithm compared to the traditional one,the new algorithm brings us higher speed in constringency and more precise in detection. The new algorithm solves the difficulties of real-time system.

关键词： system security intrusion detection bp algorithm neural network

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The ACA-bp algorithm Based Controller of PID Neural Network and Its simulation

The ACA-BP Algorithm Based Controller of PID Neural Network ...

引用

International Conference on Measurement, Instrumentation and Automation (ICMIA 2012)

作者： Ding, Fang Huang, Dongjian Civil Aviat Univ China Dept Aeronaut Automat Tianjin 300300 Peoples R China

ISBN: (纸本)9783037855454

Aiming at the shortages of traditional PD controller, and problems of hardly setting the controller parameters, and the setting time is long, this paragraph gives a design of ACA-bp arithmetic based controller of PD Neural Network. First, uses the Ant Colony algorithm to thickly select the PID neuron network weight parameter. Then adjust parameters online by, MD Neural Network and bp algorithm Finally, we can obtain optimal parameters. The simulation result shows, compared with traditional PD controller, this controller has greatly improved its control performances. This would have some theoretical and practical significance.

关键词： PID neural network bp algorithm Ant colony algorithm

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Design and Implementation of Infant Mental Health Prediction System Based on bp algorithm 4

Design and Implementation of Infant Mental Health Prediction...

引用

4th International Symposium on Artificial Intelligence for Medicine Science (ISAIMS)

作者： Ji, Lingling Beijing City Univ Dept Educ Beijing Peoples R China

ISBN: (纸本)9798400708138

5-6 years old is an important period for children to develop good habits, improve physical quality and form healthy psychology. Therefore, kindergarten should pay attention to the selection of teaching content of children's mental health education in the arrangement of education and teaching activities. This paper mainly studies the design and implementation of children's mental health prediction system based on Back Propagation (bp) algorithm. The data of children's mental health were collected through questionnaires to preschool teachers and parents, and the prediction model of children's mental health was constructed by using the data and bp algorithm. Based on the prediction model of children's mental health, combined with system development technology, this paper designs and implements the prediction system of children's mental health. The system can timely observe and predict children's mental health problems, and protect children's development.

关键词： bp algorithm infant psychology mental health prediction system

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Neural network system identification of chaotic optical systems with the chaos speedup, bp algorithm

Neural network system identification of chaotic optical syst...

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Conference on Functional Photonic and Fiber Devices

作者： Weng, ZH Yang, HJ Shen, K Zhou, LW ACAD SINICA CHUNGCHUN INST OPT & FINE MECHSTATE KEY LAB APPL OPTCHANGCHUN 130022PEOPLES R CHINA

ISBN: (纸本)0819420697

An algorithm for quickly training the bp neural network system identifier (bpNNSI) of the chaotic optical systems is presented in this paper. The ability of this algorithm, termed as the chaos speedup bp algorithm (CSbpA), has been demonstrated with the computer simulation of identifying the Bragg diffraction acousto-optic system (BDAOS) in which a 1:4:1 bp network was employed in identification. Taking the normalized output time series of the BDAOS as the training series, the bpNNSI was trained with the CSbpA as follows: (1) trained the bpNNSI to learn a chaotic state of the BDAOS with the bp algorithm where the initial weight distribution was set randomly; (2) took the final weight distribution obtained in (1) as the initial weight distribution for the other states of the BDAOS to be identified; (3) trained the bpNNSI to learn the other states still with the bp algorithm but with the initial weight distribution obtained in (2).

关键词： system identification bp network bp algorithm chaotic optical systems adaptive control

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Spatial Registration Model of TOF Camera Depth Data based on bp algorithm

Spatial Registration Model of TOF Camera Depth Data based on...

引用

Chinese Automation Congress (CAC)

作者： Yu, Weibo Yang, Shicheng Yang, Hongtao Liu, Chen Changchun Univ Technol Coll Elect & Elect Engn Changchun Jilin Peoples R China

ISBN: (纸本)9781728140940

For the errors in the original depth data obtained by TOF depth camera, which lead to image distortion, the method of establishing bp neural network space registration model was proposed to calibrate the depth data deviation caused by non-systematic random error in the process of TOF camera depth data measurement and systematic error of TOF camera measurement principle. The results are compared and analyzed with the calibration results based on the principle of keyhole imaging, bp algorithm is adopted to establish the space registration of bp neural network model, and its precision is higher than the calibration results based on the principle of keyhole imaging, stronger generalization ability, better able to recover the real scene depth data. It provides a new idea and method for the calibration of depth data measured by TOF camera.

关键词： TOF depth camera bp algorithm Spatial registration model Data calibration

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