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本文利用多层前馈式的Neocognitron网络和自适应共振ART网络研制了一种自组织和自稳定的视觉模式学习系统ART2-Cognizer,它对模式在视野中的缩小、放大、平移具有较好的容忍能力。 相似文献
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雷达导引头频域非线性建模 总被引:1,自引:0,他引:1
该文采用90 年代以来国际控制界提倡的“面向控制”的建模新方法- 频域非线性算法,对雷达导引头进行建模。针对导引头使用环境恶劣,与目标、环境相互作用关系复杂,使用了调整的非线性辨识算法( 需要先验知识) 。仿真结果表明,此辨识算法鲁棒性好,辨识结果可信度高,可靠性好 相似文献
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部分参数不准确的线性系统的鲁棒性控制 总被引:1,自引:1,他引:0
研究了部分参数不准确的线性系统在有界能量噪声作用下的控制问题,即对于系统参数
的鲁棒性控制问题.先将它简化为一个带正参数δ的H∞控制问题,然后采用J无损分解方
法,推导出调节问题的可解性条件和动态反馈控制器的全部显示通解. 相似文献
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报道了一个基于生理视觉原理的计算机图象处理系统,该系统根据对生理视觉过程的分解,采用了一种含有正反馈回路的分级前注意视觉模型,通过模拟视觉通路中信息传递所经的各种神经网络的感受影响应,对输入图象逐级进行处理,实现了对图象的突发组群和合理分割。对有严重阴影的道路图和CT扫描图进行处理的结果表明,该系统能够在可变的光照条件下提取出不变的物体边界和特征,估于传统的图象处理和机器视觉系统。 相似文献
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High dimensional data clustering, with the inherent sparsity of data and the existence of noise, is a serious challenge for
clustering algorithms. A new linear manifold clustering method was proposed to address this problem. The basic idea was to
search the line manifold clusters hidden in datasets, and then fuse some of the line manifold clusters to construct higher
dimensional manifold clusters. The orthogonal distance and the tangent distance were considered together as the linear manifold
distance metrics. Spatial neighbor information was fully utilized to construct the original line manifold and optimize line
manifolds during the line manifold cluster searching procedure. The results obtained from experiments over real and synthetic
data sets demonstrate the superiority of the proposed method over some competing clustering methods in terms of accuracy and
computation time. The proposed method is able to obtain high clustering accuracy for various data sets with different sizes,
manifold dimensions and noise ratios, which confirms the anti-noise capability and high clustering accuracy of the proposed
method for high dimensional data. 相似文献
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