The subordinate function of building fire hazard assessment in building fire risk assessment model

Traditional mathematics describe world with precision,certainty of mathematical concepts. However,the objective world is diverse and complex,so that there is something that you can't tell them between "yes" or "no". Membership is fuzzy evaluation function in concept,is influenced by various factors of the things that make comprehensive assessment of a very effective multifactor decision making method characterized by the evaluation solution not be absolutely positive or negative,but rather a represented by fuzzy sets. Fuzzy mathematics was applied in the field of hazard evaluation depended on the advantage itself. It was appropriate for the situations that the judging parameters,blurry conclusions and complicated process are all complicated. This paper based on established the index system for building fire hazard assessment and the use of fuzzy mathematics in others' literature,established the subordinate function of building fire hazard assessment. The model is not confined by the method of interval. So it has universal applicability and the results become scientific.