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基于改进RBF神经网络的巷道变形预测模型 被引量:6
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作者 崔一 杨勇辉 《金属矿山》 CAS 北大核心 2016年第8期170-173,共4页
由于经典RBF神经网络中的隐含层节点数、连接权值等结构参数基本由经验获取,因此经典RBF神经网络模型的性能取决于建立模型专家的主观性,存在一定的盲目性和随机性,难以对巷道变形进行准确预测。为此,采用贝叶斯阴阳和谐学习算法对经典... 由于经典RBF神经网络中的隐含层节点数、连接权值等结构参数基本由经验获取,因此经典RBF神经网络模型的性能取决于建立模型专家的主观性,存在一定的盲目性和随机性,难以对巷道变形进行准确预测。为此,采用贝叶斯阴阳和谐学习算法对经典RBF神经网络模型的隐含层节点个数、连接权值等结构参数进行了优化,提出了一种基于改进RBF神经网络的巷道变形预测模型,即对角型广义RBF神经网络模型。采用潞安和兖州矿区的综放回采巷道的现场长期监测数据分别对经典RBF神经网络模型以及对角型广义RBF神经网络模型进行了试验分析,结果显示:1对巷道顶底板变形进行预测时,对角型广义RBF神经网络模型的准确率约92.2%,经典RBF神经网络模型的准确率约80.6%;2对煤帮变形进行预测时,对角型广义RBF神经网络模型的准确率约90.2%,经典RBF神经网络模型的准确率约78.6%。上述试验结果表明,对角型广义RBF神经网络模型对于巷道变形预测的精度明显优于经典RBF神经网络模型,对于高精度巷道变形预测有一定的参考价值。 展开更多
关键词 巷道变形预测 RBF神经网络 贝叶斯阴阳和谐学习算法 对角型广义RBF神经网络
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Adaptive Electric Load Forecaster
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作者 Mingchui Dong Chinwang Lou 《Tsinghua Science and Technology》 EI CAS CSCD 2015年第2期164-174,共11页
In this paper, a methodology, Self-Developing and Self-Adaptive Fuzzy Neural Networks using Type-2 Fuzzy Bayesian Ying-Yang Learning (SDSA-FNN-T2FBYYL) algorithm and multi-objective optimization is proposed. The fea... In this paper, a methodology, Self-Developing and Self-Adaptive Fuzzy Neural Networks using Type-2 Fuzzy Bayesian Ying-Yang Learning (SDSA-FNN-T2FBYYL) algorithm and multi-objective optimization is proposed. The features of this methodology are as follows: (1) A Bayesian Ying-Yang Learning (BYYL) algorithm is used to construct a compact but high-performance system automatically. (2) A novel multi-objective T2FBYYL is presented that integrates the T2 fuzzy theory with BYYL to automatically construct its best structure and better tackle various data uncertainty problems simultaneously. (3) The weighted sum multi-objective optimization technique with combinations of different weightings is implemented to achieve the best trade-off among multiple objectives in the T2FBYYL. The proposed methods are applied to electric load forecast using a real operational dataset collected from Macao electric utility. The test results reveal that the proposed method is superior to other existing relevant techniques. 展开更多
关键词 load forecaster bayesian ying-yang learning algorithm type-2 fuzzy theory
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