Colombia has gone from being a producer and exporter of illicit drugs to becoming a country where consumption also plays an important role. In Bogota, as result of specific policies adopted by the authorities that hit illicit drugs hot spots, the sale has gradually become more dispersed. Exacerbated by the emergence of new neighborhoods due to unplanned population growth, monitoring such markets becomes difficult for local authorities, which appeal to global statistics and surveys to design public policies. This work proposes a new methodology for monitoring the markets of three illicit psychoactive substances (cocaine, marijuana and basuco) while also providing insights into the spatial behavior of such markets. To estimate traded quantities and market values for each substance in Bogota, specific information is collected through surveying exercises with the police force making use of social mapping. Afterward, GIS techniques are applied to analyze such information along with crime data related to drug markets. Risk terrain modeling is applied to estimate the risk of existence of retail sale points and to clean the data for latter estimation of traded quantities and spatial distribution of drug markets.

中文翻译：

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风险地形建模，用于监控哥伦比亚波哥大的非法药物市场

哥伦比亚已从非法药物的生产国和出口国转变为消费在其中也起着重要作用的国家。在波哥大，由于当局采取了打击非法毒品热点的具体政策，这种销售逐渐变得更加分散。由于计划外的人口增长，新社区的出现加剧了这种情况，对于地方当局来说，监视这样的市场变得困难了，地方当局呼吁全球统计和调查来设计公共政策。这项工作提出了一种监测三种非法精神活性物质（可卡因，大麻和巴苏科）市场的新方法，同时还提供了对此类市场的空间行为的见解。要估算波哥大每种物质的交易量和市场价值，通过与警察一起进行的社会制图调查，收集特定信息。之后，将GIS技术应用于分析此类信息以及与毒品市场有关的犯罪数据。应用风险地形模型来估计存在零售点的风险，并清理数据以用于以后估计交易量和药品市场的空间分布。