Estimating the number of people in hidden populations is needed for public health research, yet available methods produce highly variable and uncertain results. The Anchored Multiplier calculator uses a Bayesian framework to synthesize multiple population size estimates to generate a consensus estimate. Users submit point estimates and lower/upper bounds which are converted to beta probability distributions and combined to form a single posterior probability distribution. The Anchored Multiplier calculator is available as a web browser-based application. The software allows for unlimited empirical population size estimates to be submitted and combined according to Bayes Theorem to form a single estimate. The software returns output as a forest plot (to visually compare data inputs and the final Anchored Multiplier estimate) and a table that displays results as population percentages and counts. The web application 'Anchored Multiplier Calculator' is free software and is available at [http://globalhealthsciences.ucsf.edu/resources/tools] or directly at [http://anchoredmultiplier.ucsf.edu/].

中文翻译：

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软件应用程序简介：锚定乘数计算器-一种贝叶斯工具，用于合成人口规模估算值。

公共卫生研究需要估计隐藏人口的数量，但是可用的方法会产生高度可变和不确定的结果。锚定乘数计算器使用贝叶斯框架来综合多个人口规模估计值以生成共识估计值。用户提交点估计值和上下限，将其转换为beta概率分布并合并以形成单个后验概率分布。锚定乘数计算器可作为基于Web浏览器的应用程序使用。该软件允许提交无限的经验人口规模估计值，并根据贝叶斯定理进行组合以形成单个估计值。该软件以森林图的形式返回输出（以可视方式比较数据输入和最终的锚定乘数估计值），并以表格形式显示结果（人口百分比和计数）。Web应用程序“锚定乘数计算器”是免费软件，可从[http://globalhealthsciences.ucsf.edu/resources/tools]或直接从[http://anchoredmultiplier.ucsf.edu/]获得。