Relationship between precursor events of sex crime and street network characteristics in Tokyo Wards

Although there have been several studies that tried to reveal environmental factors which are related to precursor events of sex crimes, there is no research considering possibilities that the relationships of several factors may depend on characteristics of neighborhoods and that structure of street network may be relevant with occurrence of such events; both of which have already been pointed out in some studies regarding other crimes. In this research, we analyzed the relationship between a variety of factors, especially the street network characteristics and precursor events which have occurred in Tokyo Wards in the past three years. As a result, we found out relationships between the occurrence of precursor events and some of Urban Network Analysis indicators.