Machine Learning

1. Computational Intelligence
Parveen Malik
Assistant Professor
School of Electronics Engineering
KIIT University

2. Outline
• Fuzzy Inference system – Introduction
• Fuzzy Inference system – Applications
• Fuzzy Inference system – Block Diagram
• Fuzzy Inference system - Types
• Defuzzification

3. Fuzzy Inference system (FIS)
Introduction
FIS is also Known as fuzzy-rule based system, fuzzy expert
system, fuzzy model, fuzzy associative memory ,fuzzy logic
Controller and Fuzzy system.
Basic Structure of a FIS consist of :
• Rule Base – contains selections of fuzzy rules
• Database or Dictionary – defines membership functions
• Reasoning Mechanism – performs fuzzy reasoning

4. Fuzzy Inference system (FIS)- Applications
Data Classification
Fuzzy Inference
system
Automatic Control
Expert Systems
Time-Series Prediction
Pattern Recognition Robotics
Decision Analysis

5. Fuzzy Inference System (Block Diagram)
𝒙 𝒊𝒔 𝑨𝟐
𝒙 𝒊𝒔 𝑨𝟏
𝒙 𝒊𝒔 𝑨𝒓
𝒚 𝒊𝒔 𝑩𝟏
𝒚 𝒊𝒔 𝑩𝟐
𝒚 𝒊𝒔 𝑩𝒓
Rule 1
Rule r
Rule 2
Aggregator Defuzzification
⋮ ⋮ ⋮
X
Crisp or Fuzzy
(Fuzzy)
(Fuzzy)
(Fuzzy)
(Fuzzy) (Crisp)

6. Fuzzy Inference system - Types
Mamdani FIS Sugeno FIS Tsukamoto FIS
Fuzzy Inference system