Fuzzy logic

Fuzzy logic
Fuzzy logic iss a form of many-valued logic or probabilistic logic; it deals with reasoning that is approximate rather than fixed and exact.
Compared to traditional binary sets (where variables may take on true or false values) fuzzy logic variables may have a truth value that ranges in degree between 0 and 1.
Fuzzy logic has been extended to handle the concept of partial truth, where the truth value may range between completely true and completely false
http://en.wikipedia.org/wiki/Fuzzy_logic

• Fuzzy Logic (FL) is a method of reasoning that resembles human reasoning. The approach of FL imitates the way of decision making in humans that involves all intermediate possibilities between digital values YES and NO.

The conventional logic block that a computer can understand takes precise input and produces a definite output as TRUE or FALSE, which is equivalent to human’s YES or NO.
http://www.tutorialspoint.com/artificial_intelligence/artificial_intelligence_fuzzy_logic_systems.htm

• In this work, we focus   the   detection   and   prediction   mechanism   against DDoS  attacks  in  IEEE  802.15.4  using  Fuzzy  logic  system. The   main   contribution   of   Fuzzy   based   detection   and prediction system (FBDPS) is to detect the DDoS attackers

by comparing the energy consumption of sensor nodes.
http://ijcsi.org/papers/IJCSI-10-6-1-293-301.pdf