## 3 Results  
### The ASFC-RA Results  
We calculated the accessible service facilities level of various facilities in each residential area, and these are shown as the results of the indicator calculations in the experimental area in Table 11. The difference regarding the number of accessible service facilities of residential areas were prominent, and the spatial distribution of different types of service facilities is shown in Figure 5. The basic characteristics of the resulting data are as follows. (1) The quantity (\(Q\)) order of accessible service facilities in different residential areas showed a basically consistent order: Q(employment services) > Q(life services) > Q(travel services) > Q(leisure services) > Q(medicine services) > Q(education services), but some residential areas have variations; for example, Q(medicine services) in HuijingYuan is slightly higher than Q(leisure services). (2) Q(employment services) is the most significant number, which is far higher than the number of any other service facilities, and each of the Q(employment services)s is more extensive than 1400. Furthermore, the main influencing factor is that the time standard of the travel time costs threshold for enterprise service facilities is 60 minutes, which is greater than the travel time costs threshold of the other service facilities. Also, compared with field data, the experimental area is located in the Wuxi Hudai Industrial Zone. There is a total planned area of 10.3 km\({}^{2}\) in the Wuxi Hudai Industrial Zone. It is one of the essential industrial zones in Wuxi City; it integrates industry, commerce, and logistics, and focuses on electronics, light,  
Figure 4: Calculation diagram of population distribution. textiles, machinery, and logistics. The number of enterprise facilities, 1642, is the largest in Huahui Yuan #2, and the community is adjacent to the Wuxi Hudai Industrial Zone. (3) The values of Q(life services) are also high, and each value is greater than 800. The reason for these large numbers is that Hudai is located in the Binhu District of Wuxi, and has developed economies and various living and service facilities. The residential area with the lowest number of living facilities is the LiRen Garden #2 community, which is a new residential area that was established in 2017. The personnel occupancy is small, and the living service facilities in the surrounding areas are limited. (4) The values of Q(travel services), Q(leisure services), Q(medicine services), and Q(education services) are less than 200, which is related to the service attributes provided by the service facilities themselves, e.g., the medical services, travel services, education services, and leisure services. Most of the educational facilities belong to social welfare service facilities, which are generally undertaken by the government, and the number of people served by each service facility is high, e.g., educational facilities and sports facilities, primary schools, middle schools, and stadiums; furthermore, these facilities have a larger scale and a wide range of services. To better understand the characteristics of the spatial distribution of accessible service facilities, we designed six maps (Figure 6) of different service facilities to express the quantitative difference between mapped features by varying the color of symbols. We found the location of the high-value or low-value elements to be clustered in space. In general, all types of accessible service facilities maps have a similar spatial distribution pattern that shows high-value aggregation in the northwestern direction and low-value aggregation in the southeast direction. The high-value group included HuaHuiXinCun, HuaHuiXinCun#1, HuaHuiXinCun#2, HuaHuiXinCun#3, HuijingYuan, and HuaHuiYuan; the mid-value group included Versailles Estate, ZhangSheYuan#1, FuRunHuaYuan#3, FuRunHuaYuan#2, FuRunHuaYuan#1, FuAnHuaYuan #B, and FuAnHuaYuan #A; and the low-value group included LiRen Garden#2 and LiRen Garden#1.