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III. Introduction to Neural Networks And Their Applications - Basics

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Presentation on theme: "III. Introduction to Neural Networks And Their Applications - Basics"— Presentation transcript:

1 III. Introduction to Neural Networks And Their Applications - Basics

2 Introduction to Neural Networks and Its Applications
I. Introduction of Neural Networks II. Application of Neural Networks III. Theory of Neural Networks IV. An Example . Weather Forcasting

3 I. Introduction of Neural Networks
Learning in Human Brain Neurons Connection Between Neurons Neural Networks As Simulator For Human Brain Processing Elements or Nodes Weights

4 Main Applications of Neural Networks
Prediction of Outcomes Patterns Detection in Data Classification

5 Why use Neural Networks in Predict

6 II. Applications of Neural Networks
Computer Vision : Character recognition HNC : Read amount in checks NESTOR[Reilly et al , 1990]:Mortgage insurance decisions DAS/LARS[Casselman and Acks,1990] : large diagnostic system DECtalk[Sejnowski and Rosenberg, 1987] : Convert language to text Manufacturing System Controller[Park & Kim, 1991] : Ford motor Co.. Investment Decision Making System: Tong Yang Future & Options in Chicago

7 III. Theory of Neural Networks
Network Structure : Layers, Nodes and Weights Hidden Layer Input Layer Output Layer

8 Training A Neural Networks
The Key to the success of Neural Networks use is collecting a lot of good data Neural Networks learn from data Learning is finding best weights values that represent the input and output relationship in Neural Networks

9 Terms in Neural Networks

10 Testing and Validating a Neural Networks
Testing data set : use another new data Check the performance of trained Neural Networks with a testing data If it’s performance of test is good , then check validity of Neural Networks with another new set of historical data

11 Prediction with New Data
If the Neural Network's performance in test and validation is good , it can be used to predict outcome of new unseen data If the performance with test and validation is not good, you should collect more data, add more input variables

12 IV. A Neural Networks Demo
Intro to neural networks Demo for stock market prediction


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