SISTEM PAKAR MENDIAGNOSA PENYAKIT EPHELIS PADA KULIT WAJAH MENGGUNAKAN METODE CERTAINTY FACTOR

Abstract

Dark spots, known in medical terms as ephelices, are flat-shaped dark spots that often appear on the surface of the skin. These spots are usually circular or oval in shape and vary in size. Ephelices are most common on areas of the skin that are frequently exposed to sunlight, such as the face, arms, and shoulders.Exposure to the sun's ultraviolet rays stimulates the production of melanin, the pigment that determines skin color, causing age spots to form. Although dark spots are harmless, many people find their presence unpleasant mainly for aesthetic reasons. The diagnosis of facial ephelis is relatively subjective and depends on each patient's symptoms. Expert systems, a branch of artificial intelligence, can be used to support this diagnostic process. A commonly used technique in expert systems is the Factor of Safety (CF) technique. The purpose of this method is to  calculate the confidence level of a decision based on the observation data obtained. Expert systems use the factor of safety method to replace the role of experts or experts in uncertain situations. This method allows the system to make recommendations and decisions based on a measurable level of confidence, thus approaching the expert's decision. Therefore, expert systems become a very useful tool for analyzing problems and drawing conclusions by transferring knowledge from the expert to the implemented system.