Analog VLSI design of neural network architecture for implementation of forward only computation

Neural network simulations appear to be a recent development. Neural networks, with their remarkable ability to derive meaning from complicated or imprecise data, can be used to extract patterns and detect trends that are too complex to be noticed by either humans or other computer techniques. One o...

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Vydáno v:2012 Asia Pacific Conference on Postgraduate Research in Microelectronics and Electronics s. 138 - 143
Hlavní autoři: Arun, A., Srivastava, H., Mada, S., Srinivas, M. B.
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.12.2012
Témata:
Analog integrated circuits
Asia
Biological neural networks
Classification algorithms
Feeds
Forward only algorithm
Microelectronics
neural network architecture
Neurons
ISBN:9781467350655, 1467350656
ISSN:2159-2144
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Abstract Neural network simulations appear to be a recent development. Neural networks, with their remarkable ability to derive meaning from complicated or imprecise data, can be used to extract patterns and detect trends that are too complex to be noticed by either humans or other computer techniques. One of the advantages of the neural network is Adaptive learning, i.e., the ability to learn and perform tasks based on the given data provided for training or the initial experience. The focus of this paper is the implementation of one such learning algorithm known as Forward Only Computation using Analog blocks like analog multiplier, tan-sigmoid function, subtractors, etc. The reasons for using the forward only computation algorithm and the ways it overcomes the problems faced by the EBP (Error Back Propagation) algorithm and other second order algorithms like the LM (Levenberg-Marquardt) algorithm are explained in this paper. The multiplier used here is a double balanced Gilbert multiplier and the activation function used is tan sigmoid function. Another implementation of the tan sigmoid function is incorporated here, wherein it is used as a multiplier having one differential input and one single ended input (given as a bias). The neural network has been simulated using HSPICE for a period of 2ms and the converging of the weights has been observed.
AbstractList Neural network simulations appear to be a recent development. Neural networks, with their remarkable ability to derive meaning from complicated or imprecise data, can be used to extract patterns and detect trends that are too complex to be noticed by either humans or other computer techniques. One of the advantages of the neural network is Adaptive learning, i.e., the ability to learn and perform tasks based on the given data provided for training or the initial experience. The focus of this paper is the implementation of one such learning algorithm known as Forward Only Computation using Analog blocks like analog multiplier, tan-sigmoid function, subtractors, etc. The reasons for using the forward only computation algorithm and the ways it overcomes the problems faced by the EBP (Error Back Propagation) algorithm and other second order algorithms like the LM (Levenberg-Marquardt) algorithm are explained in this paper. The multiplier used here is a double balanced Gilbert multiplier and the activation function used is tan sigmoid function. Another implementation of the tan sigmoid function is incorporated here, wherein it is used as a multiplier having one differential input and one single ended input (given as a bias). The neural network has been simulated using HSPICE for a period of 2ms and the converging of the weights has been observed.
Author Srinivas, M. B.
Srivastava, H.
Mada, S.
Arun, A.
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  surname: Srinivas
  fullname: Srinivas, M. B.
  organization: Dept. of Electr. Eng., BITS Pilani, Hyderabad, India
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Snippet Neural network simulations appear to be a recent development. Neural networks, with their remarkable ability to derive meaning from complicated or imprecise...
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SubjectTerms Analog integrated circuits
Asia
Biological neural networks
Classification algorithms
Feeds
Forward only algorithm
Microelectronics
neural network architecture
Neurons
Title Analog VLSI design of neural network architecture for implementation of forward only computation
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