An Introduction to Neural Networks

An Introduction to Neural Networks

Vincent Cheung Kevin Cannons

Signal & Data Compression Laboratory Electrical & Computer Engineering University of Manitoba Winnipeg, Manitoba, Canada Advisor: Dr. W. Kinsner

May 27, 2002

Outline

Fundamentals Classes Design and Verification Results and Discussion Conclusion

Cheung/Cannons

Neural Networks 1

Classes Fundamentals

Neural Networks

What Are Artificial Neural Networks?

An extremely simplified model of the brain Essentially a function approximator

Transforms inputs into outputs to the best of its ability

Inputs

Outputs

Inputs

NN

Outputs

Design

Results

Cheung/Cannons

2

Classes Fundamentals

Neural Networks

What Are Artificial Neural Networks?

Composed of many "neurons" that co-operate to perform the desired function

Design

Results

Cheung/Cannons

3

Classes Fundamentals

What Are They Used For?

Neural Networks

Classification

Pattern recognition, feature extraction, image matching

Noise Reduction

Recognize patterns in the inputs and produce noiseless outputs

Prediction

Extrapolation based on historical data

Design

Results

Cheung/Cannons

4

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