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51.
《Advanced Robotics》2013,27(3):297-307
The existence of modular structures in the biological world strongly suggests that the training of this kind of structure is actually feasible. It is a key indication for the development of neural network applications, especially in the field of robotics. Indeed, a single network can only efficiently treat problems with few independent variables; the combination of several networks is necessary to address more complex tasks. We investigate learning techniques and show that using a particular form of architecture can ease the training of a modular structure: a bi-directional structure that allows combining several neural networks. The approach is illustrated with Kohonen's self-organizing maps for a robotic visual servoing task. 相似文献
52.
MICHAEL MANTHEY 《国际通用系统杂志》2013,42(1-3):105-139
We describe an information-oriented, computational physical theory based on expressing knowledge of the world via patterns of synchronization. The systems this theory describes are self-organizing, display emergent phenomena, and can be expressed in terms both of Clifford algebras and algebraic topology, and practical running programs. 相似文献
53.
By analyzing the operation characteristics of two subtasks that have resource dependency on each other, this paper demonstrates
the impact of progress relation between the two subtasks on the whole task’s progress, and then puts forward a self-organizing
principle called balance principle that keeps the individual profit between robots equal. Furthermore, an algorithm is designed
for adjusting subtask selection on the basis of this principle. Simulation shows the validity of the algorithm on self-organizing
task allocation in a multi-robot system.
__________
Translated from Chinese Journal of Scientific Instrument, 2007, 28(2): 224–228 [译自: 仪器仪表学报] 相似文献
54.
Ho-Lim Choi Hee-Jung Byun Won-Gyu Song Jun-Won Son Jong-Tae Lim 《Artificial Life and Robotics》2000,4(4):193-197
We present a method to calssify electromyogram (EMG) signals which are utilized as control signals for a patient-responsive
walker-supported system for paraplegics. Patterns of EMG signals for different walking motions are classified via adequate
filtering, real EMG signal extraction, AR-modeling, and a modified self-organizing feature map (MSOFM). In particular, a data-reducing
extraction algorithm is employed for real EMG signals. Moreover, MSOFM classifies and determines the results automatically
using a fixed map. Finally, the experimental results are presented for validation. 相似文献
55.
一种基于模糊聚类的故障诊断方法 总被引:1,自引:1,他引:0
电子设备的多个传感器实时反映了设备运行状态,对一种基于模糊聚类的电子设备故障诊断方法进行讨论,针对电子装备多个传感器状态信息采用模糊聚类的方法进行融合,进而提出了对于观测数据运用模糊聚类方法进行故障诊断,推理故障模式的方法。实例证明该模糊聚类方法成功地完成了某电子装备故障诊断的自动推理。该方法可以不依赖于被诊断系统的数学模型进行自适应诊断,实现故障诊断的智能化、自动化。 相似文献
56.
Mohammad Izadi Author Vitae Author Vitae 《Pattern recognition》2009,42(7):1361-1634
In this paper, an improved active contour model based on the time-adaptive self-organizing map with a high convergence speed and low computational complexity is proposed. For this purpose, the active contour model based on the original time-adaptive self-organizing map is modified in two ways: adaptation of the speed parameter and reduction of the number of neurons. By adapting the speed parameter, the neuron motion speed is determined based on the distance of each neuron from the shape boundary which results in an increase in the speed of convergence of the contour. Using a smaller number of neurons, the computational complexity is reduced. To achieve this, the number of neurons used in the contour is determined based on the boundary curvature. The proposed model is studied and compared with the original time-adaptive self-organizing map. Both models are used in several experiments including a tracking application. Results reveal the higher speed and very good performance of the proposed model for real-time applications. 相似文献
57.
The learning of complex relationships can be decomposed into several neural networks. The modular organization is determined
by prior knowledge of the problem that permits to split the processing into tasks of small dimensionality. The sub-tasks can
be implemented with neural networks, although the learning examples cannot be used anymore to supervise directly each of the
networks. This article addresses the problem of learning in a modular context, developing in particular additive compositions. A simple rule allows defining efficient training, and combining, for example, several Supervised-SOM networks. This technique
is important because it introduces interesting generalizations in many modular compositions, permitting data fusion or sequential
combinations of neural networks.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
58.
López-Rubio Ezequiel Muñoz-Pérez José Antonio Gómez-Ruiz José 《Neural Processing Letters》2002,16(2):93-109
We propose a new self-organizing neural model that considers a dynamic topology among neurons. This leads to greater plasticity with respect to the self-organizing neural network (SOFM). Theorems are presented and proved that ensure the stability of the network and its ability to represent the input distribution. Finally, simulation results are shown to demonstrate the performance of the model, with an application to colour image compression. 相似文献
59.
Clustering properties of hierarchical self-organizing maps 总被引:1,自引:0,他引:1
A multilayer hierarchical self-organizing map (HSOM) is discussed as an unsupervised clustering method. The HSOM is shown to form arbitrarily complex clusters, in analogy with multilayer feedforward networks. In addition, the HSOM provides a natural measure for the distance of a point from a cluster that weighs all the points belonging to the cluster appropriately. In experiments with both artificial and real data it is demonstrated that the multilayer SOM forms clusters that match better to the desired classes than do direct SOM's, classical k-means, or Isodata algorithms. 相似文献
60.
为解决城市信号自组织控制中,由相邻路口间各自最优通行效率冲突造成的路口群整体通行效率难以继续提升的问题,提出一种城市元胞路网下自组织控制规则参数的整定方法. 首先,利用城市路网元胞传输(CTM)模型模拟路网交通流动态状态信息;然后,基于元胞路网实时信息,以选定局域路网中各路口元胞的自组织控制规则参数为设计空间;最后,建立各路口相互协调下通行量最大化的目标函数,完成各路口自组织控制规则参数的整定. 仿真结果表明:在基于城市元胞路网实时信息条件的整定方法下,不仅解决了自组织控制中相邻路口间互相制约通行效率的问题,并且有效提高了自组织单元中所有路口的通行效率. 该方法为面向复杂城市路网的实时城市交通信号自组织控制系统提供可借鉴的智能化方法与工程化理论. 相似文献