- published: 20 Jan 2015
- views: 37849
Fuzzy logic is a form of many-valued logic in which the truth values of variables may be any real number between 0 and 1, considered to be "fuzzy". By contrast, in Boolean logic, the truth values of variables may only be 0 or 1, often called "crisp" values. Fuzzy logic has been extended to handle the concept of partial truth, where the truth value may range between completely true and completely false. Furthermore, when linguistic variables are used, these degrees may be managed by specific (membership) functions.
The term fuzzy logic was introduced with the 1965 proposal of fuzzy set theory by Lotfi Zadeh. Fuzzy logic has been applied to many fields, from control theory to artificial intelligence. Fuzzy logic had however been studied since the 1920s, as infinite-valued logic—notably by Łukasiewicz and Tarski.
Classical logic only permits conclusions which are either true or false. For example, the notion that 1+1=2 is a fundamental mathematical truth. However, there are also propositions with variable answers, such as one might find when asking a group of people to identify a colour. In such instances, the truth appears as the result of reasoning from inexact or partial knowledge in which the sampled answers are mapped on a spectrum.
I've had a sleepless night
I'm not sure that I'm alright
It feels like something snapped
Some connection deep inside
The world is turning white
Morning sun is blinding bright
I feel like someone trapped
So reluctant in the light
Logic
What logic?
Nothing makes sense anyway
Logic
Fuzzy logic
Nothing makes sense anyway
Logic
Fuzzy
Nothing makes sense anyway
Fuzzy
Happy
Logic makes sense every day
My road grew dark and long
I don't know where I belong
It seems like somewhere close
A perception growing strong
I heard the siren's song
My perspective got all wrong
It seems like no one knows
Don't remember all is gone
It's been a hard long wake
Now the hour's getting late
I thought I had a plan
Lost it somewhere on the way
I've seen the small turn great
Always thought it was my fate
But then I'm just a man