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Chapter 2 Introduction to Neural network

Chapter 2 Introduction to Neural network

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Many signal processing problems can be transformed <strong>to</strong> the approximation<br />

problem. We will deal with arbitrary number of input<br />

and output for any nonlinear function.<br />

2.1.2 Association<br />

The ideas is <strong>to</strong> put a finite number of items in memory (e.g. the<br />

Latin characters) and by presenting dis<strong>to</strong>rted versions, we want the<br />

item <strong>to</strong> be res<strong>to</strong>red.<br />

Example:<br />

Input<br />

Output<br />

¡<br />

□<br />

2.1.3 Pattern classification<br />

A number of inputs should be classified in<strong>to</strong> categories.<br />

o<br />

¡<br />

90 C OK<br />

o<br />

100 C<br />

Error<br />

□<br />

2.1.4 Prediction<br />

Given information up <strong>to</strong> present time predict the behavior in the<br />

future.<br />

2.1.5 Au<strong>to</strong>matic control (Reglerteknik)<br />

We want <strong>to</strong> simulate the behavior of a process so that we can control<br />

it <strong>to</strong> fit our purposes.<br />

29

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