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Investigation on Delayed Feedback Neural Networks and Two-layer Feedback Neural Networks

Abstract

反馈神经网络是神经网络中最重要的类型之一,这种网络的突出特点就是它具有联想记忆的功能。反馈神经网络最重要的范例就是Hopfield网络,它已经被人们广泛地研究过,然而Hopfield网络和它的许多变种都存在着一些严重的缺陷,比如伪吸引子问题和低存储率问题。这些缺陷严重地限制了它们的实际应用能力。另外,Hopfield网络是典型的非线性动力系统,在近十几年来非线性动力学的发展中,人们认识到到了非线性动力系统不仅可能存在不动点解,而且也可能存在大量的极限环或周期运动解。目前,绝大部分反馈神经网络都是利用系统的不动点作为信息存储的载体,但这种方式没有利用非线性动力系统大量存在的周期解,从某种意义上说...Feedback neural network is one of the most important neural network, the most remarkable feature of this kind of network is the associative memory function. The most important paradigm of feedback neural network is the Hopfield network which has been studied widely, but the Hopfield network and its modifications have some serious limitations, such as the spurious attractor problem and low storage ...学位:理学博士院系专业:物理与机电工程学院物理学系_凝聚态物理学号:B20042400

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