Lesson2

Hi,

as you saw in the last session [p], I asked you to think about two figures. Today I will explain why did I ask you to think about this. 

As a matter of fact, we use to explain phenomenas like temperature [C], evaporation [C] and etc by various shapes and diagrams. Furthermore, explaining such phenomenas using absolute values may cause some uncertainty in general conclusion. Fore example: Consider temperature as the phenomena which we eager to discuss about, in this situation we use some measurement equipments like thermometer and assigning  some values referring to our senses (1˚C: cold , 17˚C: warm, 35˚C: Hot). 

On the other hand, we can accept that talking about such global measures in this way is not a fair treatment, because different people form different regions of the world may determine it in separate ways, maybe a Russian guy from Siberia may consider 17˚C as a hot temperature or a Brazilian gentleman may decide that 35˚C is much like warm air and not so hot.

In conclusion, explaining such phenomenas in absolute values may cause serious disagreements between people of the world. In engineering and scientific defining measure we have to come in the same conclusion with other people of the world and this is the point that we use Fuzzy logics [C] to solve our problems. As you saw in the last figures, we can assign different credits or values to our research cases by using no cutting edges or absolute value.

In next session, I will explain the basic rules and a general opening about the Fuzzy Logic and how to use this in such treatments.

sincerely yours.

Babak V.Dst [p]