Evaluation and Application of Fuzzy Factors in Road Network Selection

Road's weights are vital in road network selection, as they can represent the relative importance of the roads among the road network. In the existing algorithms, three types of characteristics of roads, i.e. geometrical, topological and distribution characteristics, have been taken into account as the measure of roads' weights. But there are other characteristics such as traffic flow, economical value or culture value may affect the roads' importance in road networks, which are called fuzzy factors in the new algorithm because they are usually difficulty to measure by a certain value. To fill this gap, the paper propose a new algorithm take into account these fuzzy factors during road network selection. The basic idea is as follows: 1) fuzzy factors which should be taken into consideration in the process of road networks selection are proposed, and a comprehensive evaluation is made on these fuzzy factors; 2) the evaluated result is introduced into the road network selection. Experiment shows that the new algorithm taking into account the fuzzy factors not only inherits the advantages of the existing algorithm, but also considers the factors which are ignored in the existing algorithms, the selection results are more reasonable and in line with people's actual needs.