bet365 live casino games World Bank official website published on July 6th, Paolo Avner, a senior economist at the bank、Jun Renchler and researcher Samira Barzin, a researcher at Cambridge University of Cambridge University in the United Kingdom, and Neave O'Clery, the deputy professor of the University of London, Article means，Details on the distribution of employment space are very important，It can help decision makers and researchers identify the economic center in the city，and take targeted measures to improve production efficiency and traffic efficiency，Enhance the ability of the city's rapid recovery。

In practice，People often register through industry and commerce、Employment census or travel survey data to understand the spatial distribution and density of employment positions in the city。But，There are not many cities with high -precision employment data，Especially in developing countries，Related data may be incomplete、Unreliable or outdated，Decisions made based on this information，It is difficult to effectively target the center of employment。

Afner and others think，Various facilities in Bet365 app download the city (such as restaurant、Self -service withdrawal machine、School, etc.) Compared places、Where the road gathers、Public transportation sites or places with more night lights，Often is an economic activity center，It is also where the workplace concentration。On the contrary，Water body and vegetation where a lot of concentrations are concentrated，The density of employment positions may be relatively low。Now，The development of technology allows people to use mobile phones to record the "meaningful" position，So，Researchers have developed a scalable machine learning algorithm，Based on extensive available public data，High -precision Bet365 app download estimation、Show the distribution of employment space in all regions in the city。They are in 14 African and Latin America cities，Testing the data extracted from the "open map" and the Google Earth engine was tested。Test results indicate，The conclusion obtained through this algorithm is reliable，The estimated data is close to the data obtained from the actual survey。Use this scalability、Methods that can be quickly applied and cost lower，Can generate high -precision employment density diagram，Help people more systematically analyze employment and sex，Evaluation and improve the effectiveness of urban traffic investment and land use intervention measures，Take measures bet365 live casino games for weak links that are not conducive to urban prosperity and rapid recovery。This algorithm also helps people develop and use various quantitative space economic models，To formulate effective economic policies and determine its priority order。

(Yao Xiaodan/Compilation)