Fuzzy logic is derived from fuzzy set theory dealing with reasoning that is approximate rather than precisely deduced from classical predicate logic. It can be thought of as the application side of fuzzy set theory dealing with well thought out real world expert values for a complex problem. (Klir 1997).

Degrees of truth are often confused with probabilities. However, they are conceptually distinct; fuzzy truth represents membership in vaguely defined sets, not likelihood of some event or condition. To illustrate the difference, consider this scenario: Bob is in a house with two adjacent rooms: the kitchen and the dining room. In many cases, Bob's status within the set of things "in the kitchen" is completely plain: he's either "in the kitchen" or "not in the kitchen". What about when Bob stands in the doorway? He may be considered "partially in the kitchen". Quantifying this partial state yields a fuzzy set membership. With only his little toe in the dining room, we might say Bob is 99% "in the kitchen" and 1% "in the dining room", for instance. No event (like a coin toss) will resolve Bob to being completely "in the kitchen" or "not in the kitchen", as long as he's standing in that doorway. Fuzzy sets are based on vague definitions of sets, not randomness.

Fuzzy logic allows for set membership values between and including 0 and 1, shades of gray as well as black and white, and in its linguistic form, imprecise concepts like "slightly", "quite" and "very". Specifically, it allows partial membership in a set. It is related to fuzzy sets and possibility theory. It was introduced in 1965 by Prof. Lotfi Zadeh at the University of California, Berkeley.

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Fri, 04 Jul 2008 22:11:59 -0000
Drowned In SoundFuzzy Logic: Times New Viking turned up to elevenDrowned In Sound, UK - 6 hours agoIt’sa beautiful thing. I’m speaking with Times New Viking minutes ahead of a Camden show in the venue's heaving back yard, and as the tape rolls they’re ...
Fuzzy logic just not - Pratt Tribune
Fri, 13 Jun 2008 16:30:28 -0000
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Go Organic, Eat the Poor? - The Plank on TNR.com
Tue, 01 Jul 2008 20:50:40 -0000
Go Organic, Eat the Poor?The Plank on TNR.com, DC - Jul 1, 2008According to the author’s fuzzy logic, organic farming produces fewer crops yields than conventional methods, thus demanding that more farmland be put under ...
Big brother can hear you now - Inquirer
Tue, 24 Jun 2008 19:37:38 -0000
Big brother can hear you nowInquirer, UK - Jun 24, 2008... artificial intelligence template for the waveform of sound shapes and if the shape isn't an exact fit, use fuzzy logic to determine what the sound is. ...
Proposed Nevada water pipeline project imperil communities, lifestyles - Salt Lake Tribune
Fri, 04 Jul 2008 13:41:57 -0000
Proposed Nevada water pipeline project imperil communities, lifestylesSalt Lake Tribune, United States - 15 hours agoBut when Las Vegas tries the same logic to justify buying up water rights in this remote rural area to feed its nonstop urban growth, Baker and Perea object ...
Beware: CCTV Camera To Capture - EFYTimes (press release)
Thu, 26 Jun 2008 04:54:55 -0000
Beware: CCTV Camera To CaptureEFYTimes (press release), India - Jun 25, 2008The software behind this research uses fuzzy logic to identify certain visual cues and sounds. Dr Brown said: “In identifying sound we are looking for the ...530 - Portsmouth Uni's seeing and hearing CCTV cameras QED Onlineall 22 news articles

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