Perceptron training, Computer Engineering

Assignment Help:

Perceptron training:

Here the weights are initially assigned randomly and training examples are needed one after another to tweak the weights in the network. Means all the examples in the training set are used and the entire process as using all the examples again is iterated until all examples are correctly categorised through the network. But the tweaking is called as the perceptron training ruleso then is as follows: There if the training example, E, or is correctly categorised through the network so then no tweaking is carried out. Whether E is mis-classified and then each weight is tweaked by adding on a small value and Δ. Let suppose here that we are trying to calculate weight wi that is between the i-th input unit and xi and the output unit.

After then given that the network should have calculated the target value t(E) as an example E but in reality we calculated the observed value o(E) and then Δ is calculated as: 

Δ = η (t(E)- o(E))xi 

Always note that η is a fixed positive constant that called the learning rate. By ignoring η briefly we can see that the value Δ that we add on to our weight wi is calculated through multiplying the input value xi through t(E)  -  o(E). t(E)  -  o(E) will either be +2 or -2 it means that perceptrons output only +1 or  -1 so t(E) cannot be equal to o(E) or else we wouldn't be doing any tweaking. Now we can think of t(E) - o(E) as a movement in a general numerical direction that is, positive or negative. It means that this direction will be like, if the overall sum, S, was too low to get over the threshold and produce the correct categorisation  rather then the contribution to S from wi  * xi will be increased.


Related Discussions:- Perceptron training

Python, When investing money, an important concept to know is compound inte...

When investing money, an important concept to know is compound interest. The equation FV = PV (1+rate)periods . This relates the following four quantities. The present value (PV)

#titlecompiler design.., c program for converting context free grammar to g...

c program for converting context free grammar to griebach normal form

Why we use addressing schemes, Q Why we use addressing schemes? An ope...

Q Why we use addressing schemes? An operation code of an instruction tells the operation to be performed. This operation is executed on some data stored in memory or register.

Area under curve, Write a program to find the area under the curve y = f(x)...

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve betw   #includ

Give a technical description of e-mail, E-mail system is mostly used for se...

E-mail system is mostly used for sending message electronically to group or individuals of individuals in inter and intra office environment. It needs networks to connect them. In

What do you mean by program counter, Q. What do you mean by Program Counter...

Q. What do you mean by Program Counter? Program Counter (PC): It determines the instruction that is to be executed next which means after the execution of an on-going instructi

Communication displays and matrix, Communication displays give support in d...

Communication displays give support in determining the frequency of communication, whether congestion in message queues or not, volume and the type of patterns being communicated e

How to create an html document, An HTML document can be created by using an...

An HTML document can be created by using any HTML editor or text editor such as notepad etc. STEPS FOR CREATING A SIMPLE HTMLPROGRAM   1. Go to Start -> Programs->A

Feature of micro-instruction execution, Q. Feature of micro-instruction exe...

Q. Feature of micro-instruction execution? Feature of micro-instruction execution is micro-instruction sequencing which involves address calculation of next micro-instruction.

What methods can be overridden in java, In C++ terminology, all public meth...

In C++ terminology, all public methods in Java are virtual. Thus, all Java methods can be overwritten in subclasses except those that are declared final, private and static.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd