Fuzzy Logic SimplifiedBy Jack Rabah

Am

I being

F u z z y

enough

for you?

IF temperature IS very cold THEN stop fanIF temperature IS cold THEN turn down fanIF temperature IS normal THEN maintain levelIF temperature IS hot THEN speed up fan

FUZZY LOGICLotfi A. Zadeh

A mathematician, electrical engineer, computer scientist, artificial intelligence researcher and professor emeritus of computer science at the University of California, Berkeley.

Quick Demo

• If you live in Ramallah area raise your hand• If you lived a happy life so far raise your hand

• A little bit• More or less• About• Usually

A way to make computers to make decisions more like human beings.

Definition

• A form of mathematical logic in which truth can assume a continuum of values between 0 and 1.

• The statement, today is sunny, might be 100% true if there are no clouds, 80% true if there are a few clouds, 50% true if it's hazy and 0% true if it rains all day.

Fuzzy Sets

• Model concepts and objects in the real world

Ex. Height of players in a basket ball team.

Fuzzy Rules

• Allows us to deal to situations that are not precise• Common sense rather than strict measurements • Words rather than numbers

Ex. Height & Agility which sport to play

If a person is tall and agile they should consider basketball.

If a person is short and broad they should consider wrestling.

Evolution

1965 Fuzzy Set1973 Fuzzy Logic

& Fuzzy Set Theory

1974 First Fuzzy logic controller

(UK)

1976 First industrial

application (Denmark)

1985 Japanese adopt Fuzzy

Control in key projects such as Sendai railway

1999 measurement ->

perception (natural language

processing) (CWW: computing

with words)

Some Statistics

• Number of fuzzy-logic-related patents applied for or issued in Japan: 22,541 (not updated)

• Number of fuzzy-logic-related patents (containing the word “fuzzy”) applied for or issued in the US: 33,022

Publications• 1970-1979: 563• 1980-1989: 2,375• 1990-1999: 21,554• 2000-2009: 44,462• 2010-present: 9, 696• Total: 78,650

Applications of Fuzzy Logic

Current applications• Control• Consumer products• Industrial systems• Automotive• Decision analysis• Medicine• Geology• Pattern recognition• Robotics

Applications under research• Computational theory of

perceptions• Natural language processing• Financial engineering• Biomedicine• Legal reasoning• Forecasting

You never know when it strikes!

Thank You !