Perceptron training, Computer Engineering

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.

Posted Date: 1/11/2013 7:00:35 AM | Location : United States







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

Write discussion on Perceptron training
Your posts are moderated
Related Questions
This boils down to the concept of Binary digits. Take an array size of 64 for example. We begin from 0 and end at 63. We need 6 bits.But, if we were to begin from 1 and end at 64,


Question: (a) Comment on the general structure of the IAS Computer, illustrate your answer using a diagram. (b) (i) Define CPU time. (a) (ii) A program runs in 10

sir, please give me an source code program for Hierarchial-Directory-system using any Unix/Linux


is c++ is language or any software

I/O devices need to be matched up to computer application. -  Computer-aided design (graph plotters, large screens, etc.) -  Virtual reality (data gloves, data goggles, etc.)

Logic-based Expert Systems - Artificial intelligence: Expert systems are agents which are programmed to make decisions about real world situations. They are put together by uti

Q. How to Add Cell Padding? As you can see, text is too close to the edges of the cells. You will add padding to the cells to leave room between text and cells. 1.  Click in

does matlab contain procedures for knoledge representation? if yes where can i find it?