The Backpropagation Algorithm: Indian Institute of Technology Roorkee
The Backpropagation Algorithm: Indian Institute of Technology Roorkee
The Backpropagation Algorithm: Indian Institute of Technology Roorkee
2
Pattern Classification
Two-Layer XOR Network
3
Function Approximation
Function Approximation Network
4
Function Approximation
Nominal Response of Network
5
Function Approximation
Effect of Parameter Changes on Network Response
6
The Backpropagation Algorithm
Three-Layer Network, Abbreviated Notation
7
The Backpropagation Algorithm
Performance Index
Sensitivity
8
The Backpropagation Algorithm
Forward Propagation
Backward Propagation
9
The Backpropagation Algorithm
Backward Propagation
10
Associative Learning
•An association is any link between a system’s input and output such
that when a pattern A is presented to the system it will respond with
pattern B
11
Banana Associator
•An association is any link between a system’s input and output such
that when a pattern A is presented to the system it will respond with
pattern B
12
Unsupervised Hebb Rule
In vector form:
13
Unsupervised Hebb Rule
14
Simple Recognition Network
Instar Rule
15
Simple Recognition Network
Example
16
Simple Recall Network
Outstar Rule:
17
Simple Recognition Network
Example
18
References
19