The problem of path planning in the field of robot navigation is now a major re search hot *** the premise of ensuring that the robot can successfully navigate to the target point,the safety of the path also needs to ...
详细信息
ISBN:
(纸本)9781665431293
The problem of path planning in the field of robot navigation is now a major re search hot *** the premise of ensuring that the robot can successfully navigate to the target point,the safety of the path also needs to be *** order to find a safer path,a safe pathfinding path planning method is proposed,which introduces two safety parameters that affect the path selection:hazard coefficient and movement *** defining two security parameters,design an appropriate reward function and use A2 C algorithm and PPO algorithm to guide the robot to conduct reinforcement *** experiment will be conducted on a two-dimensional grid map containing various *** conducting comparative experiments,it is verified that the safety pathfinding method proposed in this paper is feasible and reasonable,and can enable the robot to choose a safer road instead of a faster road when planning the path.
Degaussing used magnetic hard drives is a common means of destroying magnetic *** degaussing for different magnetic hard drives can improve the efficiency of magnetic information *** this scenario,it is necessary to q...
详细信息
ISBN:
(纸本)9781665431293
Degaussing used magnetic hard drives is a common means of destroying magnetic *** degaussing for different magnetic hard drives can improve the efficiency of magnetic information *** this scenario,it is necessary to quickly identify the used magnetic hard disk *** at the above problem,this paper proposes to apply machine vision to the identification of magnetic hard disk serial *** first,the magnetic hard disk serial number image is ***,the serial number is segmented and its HOG features are ***,a support vector machine(SVM) algorithm is used to construct a recognition *** effectiveness of the proposed method is verified by the magnetic hard disk serial number image.
In the wastewater treatment processes(WWTPs),the oxygen transfer is a nonlinear and large time-delay process,which makes the dissolved oxygen(DO) concentration difficult to *** this paper,a novel kind of control m...
详细信息
ISBN:
(纸本)9781538629185
In the wastewater treatment processes(WWTPs),the oxygen transfer is a nonlinear and large time-delay process,which makes the dissolved oxygen(DO) concentration difficult to *** this paper,a novel kind of control method based on fuzzy neural network(FNN) is proposed for controlling DO *** parameters of the neural network were adjusted online through the gradient descent algorithm to get the minimum ***,the simulation results in Benchmark Simulation Model No.1(BSM1) show that the proposed fuzzy neural network controller has better adaptability than some other existing methods.
Short-term prediction of water demand provides basic guarantee of water supply system operation and *** this study,an effective model for daily water demand forecasting is ***,principle component analysis(PCA) is util...
详细信息
ISBN:
(纸本)9781538629185
Short-term prediction of water demand provides basic guarantee of water supply system operation and *** this study,an effective model for daily water demand forecasting is ***,principle component analysis(PCA) is utilized to simplify the complexity and reduce the correlation between influence variables,and the score values of selected principle components(PCs) turn into the irrelevant input data of fuzzy neural network(FNN),which models the prediction of water ***,an improved Levenberg-Marquardt(ILM) algorithm is employed to optimize the parameters of FNN ***-Hessian and gradient matrices could be calculated directly without the storage and multiplication of whole Jaccobian matrix,therefore the problems of heavy computing burden and limited memory space could be *** last,contrast experiments are implemented to demonstrate the fuzzy neural network with Levenberg-Marquardt algorithm(ILM-FNN)has better prediction performance and capability to handle practical issues.
In order to overcome the defects of gradient descent(GD) algorithm which lead to slow convergence and easy to fall into local minima,this paper proposes an adaptive optimum steepest descent(AOSD) learning algorith...
详细信息
ISBN:
(纸本)9781538629185
In order to overcome the defects of gradient descent(GD) algorithm which lead to slow convergence and easy to fall into local minima,this paper proposes an adaptive optimum steepest descent(AOSD) learning algorithm which is used for the recurrent radial basis function(RRBF) neural *** with traditional GD algorithm,the adaptive learning rate is integrated into the AOSD learning algorithm in order to accelerate the convergence speed of training algorithm and improve the network performance of nonlinear system *** comparisons show that the proposed RRBF has faster convergence speed and better prediction performance.
With the continuous development of the mobile phone industry,used mobile phone(UMP) recycling has become a hot *** present,few experts research UMP recognization(UMPR) methods based on UMP recycling *** forest(DF) ide...
详细信息
ISBN:
(纸本)9781665431293
With the continuous development of the mobile phone industry,used mobile phone(UMP) recycling has become a hot *** present,few experts research UMP recognization(UMPR) methods based on UMP recycling *** forest(DF) identification model of UMPs for intelligent recycling equipment has been proposed,which has many parameters to be manually *** at the above problems,this paper combines differential evolution(DE) algorithm and DF model to propose a method for identifying ***,the candidate multi-scale feature parameters and DF parameters are given ***,we use DE to find the optimal parameters with DF accuracy as the evaluation ***,we feed the obtained optimal parameters into the DF model to construct the final UMPR *** results based on mobile phone pictures of the Ministry of Industry and Information Technology prove the effectiveness of the method.
To solve the problem of gradient descent(GD) method which has low accuracy and easily falling into local optimum,the radial basis function(RBF) based on immune algorithm system(IAS-RBF) is *** this method,each antibod...
详细信息
ISBN:
(纸本)9781538629185
To solve the problem of gradient descent(GD) method which has low accuracy and easily falling into local optimum,the radial basis function(RBF) based on immune algorithm system(IAS-RBF) is *** this method,each antibody is a RBF neural network and the optimal affinity is calculated by immune algorithm system(IAS) to get the best antibody,then the optimal parameter of RBF neural network(i.e.,the RBF centers,the widths,and the output weights) are *** simulation results show that IAS-RBF overcomes the problem of premature convergence,and has a better accuracy than other RBF neural networks.
An abnormal solution might occur during the learning process of echo state network if the least singular value of reservoir state matrix is very close *** solve this problem,an echo state network based on Levenberg-Ma...
详细信息
ISBN:
(纸本)9781538629185
An abnormal solution might occur during the learning process of echo state network if the least singular value of reservoir state matrix is very close *** solve this problem,an echo state network based on Levenberg-Marquardt(LM-ESN)algorithm replacing linear regression for output weights is proposed and a new damping term is *** the proposed method,it is demonstrated that the output weights sequence has quadratical convergence if the norm of error vector provides a local error *** show that the new method could deal with abnormal solution problems effectively,also it has better performance and robustness for time series prediction than some existing methods.
The selection of global best(Gbest) exerts a high influence on the searching performance of multi-objective particle swarm optimization algorithm(MOPSO). The candidates of MOPSO in external archive are always estimate...
详细信息
The selection of global best(Gbest) exerts a high influence on the searching performance of multi-objective particle swarm optimization algorithm(MOPSO). The candidates of MOPSO in external archive are always estimated to select Gbest. However,in most estimation methods, the candidates are considered as the Gbest in a fixed way, which is difficult to adapt to varying evolutionary requirements for balance between convergence and diversity of MOPSO. To deal with this problem, an adaptive candidate estimation-assisted MOPSO(ACE-MOPSO) is proposed in this paper. First, the evolutionary state information,including both the global dominance information and global distribution information of non-dominated solutions, is introduced to describe the evolutionary states to extract the evolutionary requirements. Second, an adaptive candidate estimation method,based on two evaluation distances, is developed to select the excellent leader for balancing convergence and diversity during the dynamic evolutionary process. Third, a leader mutation strategy, using the elite local search(ELS), is devised to select Gbest to improve the searching ability of ACE-MOPSO. Fourth, the convergence analysis is given to prove the theoretical validity of ACE-MOPSO. Finally, this proposed algorithm is compared with popular algorithms on twenty-four benchmark functions. The results demonstrate that ACE-MOPSO has advanced performance in both convergence and diversity.
High-quality data play a paramount role in monitoring,control,and prediction of wastewater treatment process(WWTP)and can effectively ensure the efficient and stable operation of *** values seriously degrade the accur...
详细信息
High-quality data play a paramount role in monitoring,control,and prediction of wastewater treatment process(WWTP)and can effectively ensure the efficient and stable operation of *** values seriously degrade the accuracy,reliability and completeness of the data quality due to network collapses,connection errors and data transformation *** these cases,it is infeasible to recover missing data depending on the correlation with other *** tackle this issue,a univariate imputation method(UIM)is proposed for WWTP integrating decomposition method and imputation ***,the seasonal-trend decomposition based on loess method is utilized to decompose the original time series into the seasonal,trend and remainder components to deal with the nonstationary characteristics of WWTP ***,the support vector regression is used to approximate the nonlinearity of the trend and remainder components respectively to provide estimates of its missing values.A self-similarity decomposition is conducted to fill the seasonal component based on its periodic ***,all the imputed results are merged to obtain the imputation ***,six time series of WWTP are used to evaluate the imputation performance of the proposed UIM by comparing with existing seven methods based on two *** experimental results illustrate that the proposed UIM is effective for WWTP time series under different missing ***,the proposed UIM is a promising method to impute WWTP time series.
暂无评论