A Fuzzy Model of Diagnosis of Eight Syndromes and Internal Organs’ Syndromes in Traditional Vietnamese Medicine

The aim of this paper is to develop a fuzzy model of diagnosis of eight syndromes and internal organs syndromes in traditional Vietnamese medicine. Traditional Vietnamese medicine is based on experiences of thousands of years of Vietnamese people in struggle against disease. In the traditional Vietnamese medicine, a diagnosis of eight syndromes and internal syndromes is most important because the result of eight syndromes can show that the disease nature of a patient belongs to Yang or Yin which guides to the traditional practitioners to select a suitable treatment. On the other side, a diagnosis of eight syndromes and internal organs’ syndromes is a combined syndromes’ diagnosis in traditional Vietnamese medicine. Some examples of a combination of eight syndromes and internal organs’ syndromes are spleen—deficiency, spleen—stomach—deficiency—cold, etc. In traditional Vietnamese medicine, most medical entities are in fuzzy nature, therefore they can be represented by fuzzy sets. The fuzzy logic operations [1, 2] such as t-norm operator, t-conorm operator, negation operator are used in developing the diagnostic system based on the proposed model. An example to show the work of this model is given. The first evaluation of the implemented system shows that the system diagnoses with an acceptable accuracy.