Backpropagation, Computer Engineering

Backpropagation:

However Backpropagation can be seen as utilising searching a space of network configurations as weights in order to find a configuration with the least error, measured in the above fashion. Hence the very complicated network structure look like as the error surface that is searched can have local minima so this is a problem for multi-layer networks where we look at ways around it below.

So now having said that, even if a learned network is in a local minima there it may still perform adequately hence multi-layer networks have been utilise to great effect in real world situations as see Tom Mitchell's book for a description of an "ANN" that can drive a car! 

According to the problem of local minima is to utilise random re-start as described in the lecture on search techniques. But different initial random weightings for the network may mean like it converges to different local minima or the best of these can be taken for the learned ANN.

However, as described there in Mitchell's book, a "committee" of networks could be learned that with the as possibly weighted average of their decisions taken as an overall decision for a given test example.

Posted Date: 1/11/2013 7:23:07 AM | Location : United States







Related Discussions:- Backpropagation, Assignment Help, Ask Question on Backpropagation, Get Answer, Expert's Help, Backpropagation Discussions

Write discussion on Backpropagation
Your posts are moderated
Related Questions
Face Scanning Security System - Biometric Computer Security Systems Finally, face scanning security system are also one of biometric technologies. Generally, the principle of

A library of container templates approved by the ANSI committee for inclusion in the standard C++ specification. A programmer who then launches into a discussion of the generic

Handler's Classification In 1977, Wolfgang Handler proposed an detailed notation for expressing the parallelism and pipelining of computers. Handler's classification addresses

what are the Database designs to avoid?

how to write this program,what are the declaration and function are needed in java program in java // aakash , suraj , prem sasi kumar kamaraj college program 1 : pack

Explain various classes of datatypes of C   Following are the main classes of data types in C language: 1.  Primary data types: Also called as fundamental/basic data types

Q. Explain about Wide Area Network? Wide Area Network (WAN) usually refers to a network, which covers a large geographical area as well as use communications subnets (circuits)

Basic Operational Concepts of a Computer: Most of computer operations are executed in the ALU (arithmetic and logic unit) of a processor. For an example: to add 2 numb

How call processing takes place? Fundamental Call Procedure: Fig. demonstrates a simplification diagram exemplifying how two telephone sets (as subscribers) are interconnecte

What is electronic cash? E-cash is cash which is shown by two models. One is the on-line form of e-cash which permits for the completion of all types of internet transactions.