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Determination of radon prone areas by optimized binary classification

机译:通过优化的二元分类确定of高发区

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摘要

Geogenic radon prone areas are regions in which for natural reasons elevated indoor radon concentrations must be expected. Their identification is part of radon mitigation policies in many countries, as radon is acknowledged a major indoor air pollutant, being the second cause of lung cancer after smoking. Defining and estimating radon prone areas is therefore of high practical interest. In this paper a method is presented which uses the geogenic radon potential as predictor and thresholds of indoor radon concentration for defining radon prone areas, from which thresholds for the geogenic radon potential are deduced which decide whether a location is flagged radon prone or not, in the absence of actual indoor observations. The overall results are different maps of radon prone areas, derived from the geogenic radon map, and depending (1) on the criterion which defines what a radon prone area is; and (2) on the choice of score whose maximization defines the optimal classifier. Such map is not the result of a transfer model (geogenic to indoor radon), but of the optimization of a classification rule. The method is computationally simple but has its caveats and statistical traps, some of which are also addressed.
机译:基因ogenic易发地区是出于自然原因必须预期室内indoor浓度升高的地区。在许多国家/地区,对identification的识别是缓解ra的政策的一部分,因为ra被认为是主要的室内空气污染物,是继吸烟后第二大肺癌原因。因此,定义和估计容易产生ra的区域具有很高的实际意义。在本文中,提出了一种方法,该方法使用地质genic气势作为预测指标,并使用室内ra气浓度阈值来定义容易产生ra气的区域,从中推导出确定是否存在标记ra气倾向位置的地质genic气势阈值。没有实际的室内观察。总体结果是从地质genic图得出的不同different易发地区图,并取决于(1)定义defines易发地区是什么的标准; (2)在分数的选择上,分数的最大化定义了最佳分类器。这样的地图不是转移模型的结果(从基因到室内的ra),而是分类规则的优化。该方法计算简单,但有一些警告和统计陷阱,其中一些也已解决。

著录项

  • 来源
    《Journal of Environmental Radioactivity》 |2014年第3期|121-132|共12页
  • 作者

    P. Bossew;

  • 作者单位

    German Federal Office for Radiation Protection, Koepenicker Allee 120 - 130, 10318 Berlin, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Radon prone area; Geogenic radon potential; ROC graph;

    机译:pro高发区ogenic潜在ROC图;

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