-Producer Services has played a crucial role for the city's economic development, industrial structure optimization and transformation. In our paper we used the 31 provinces (city) Chinese employment data to computing the aggregation of Producer Services by Location Entropy, Spatial Gini coefficient and Spatial concentration index, explored the status of aggregation of Producer Services. We found that the Producer Services were on space diffusion trend while they are in the aggregation in the large city. Our paper pointed out that the city construction has influence on the Producer Service. Especially the development of the smart city has "squeezing" effect on the Producer Service, the one hand to promote the aggregation of Advanced Producer Services, on the other hand, to push the Low-end Producer Services diffusion to the surrounding city.
A novel planning algorithm based on firefly algorithm (FA) and Bezier curve is presented to locate the shortest feasible (collision-free) path, in this paper. FA is employed to locate the optimal control points of Bezier curve describing the shortest feasible path. Experiments based on benchmark maps from literatures are carried out to compare with other popular heuristic algorithm. Results show that our presented method is superior in success rate.Index Terms -firefly algorithm, path planning, Bezier curve..
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