Food reconstruction using isotopic transferred signals (FRUITS): a Bayesian model for diet reconstruction.
Food reconstruction using isotopic transferred signals (FRUITS): a Bayesian model for diet reconstruction.
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DOI：
10.1371/journal.pone.0087436
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Grootes P
中科院分区：
文献类型：
--
作者：
Fernandes R;Millard AR;Brabec M;Nadeau MJ;Grootes P
依赖组织化学特征的人类和动物饮食重建研究旨在提供对潜在食物组的相对摄入量的估计。然而，在处理数据时需要考虑几个不确定因素。贝叶斯混合模型提供了一个自然的平台来处理不同的不确定性来源，同时允许用户提供先前的专家信息。贝叶斯混合模型水果(利用同位素转移信号重建食物)是为用于饮食重建研究而开发的。水果结合了解释饮食路线的能力，即不同食物成分(例如大量营养素)对消费者测量的饮食替代信号的贡献。水果还提供了相对直接的手段，用于介绍关于食物组或食物组分在饮食中的相对贡献的先前信息。例如，这种类型的先验可能起源于生理或代谢研究。水果性能使用模拟数据和发表的受控动物饲养实验数据进行测试。选择喂养实验数据是为了举例说明水果中结合的新功能的应用，也是为了说明在处理饮食重建研究中的数据时需要考虑的一些方面。水果准确地预测了饮食摄入量，并获得了包括专家先验信息的更准确的饮食情景估计。水果是在不同科学领域(如生态学、法医学、考古学和饮食生理学)的饮食重建研究中实现准确和精确食物摄入量估计的有用工具。
Human and animal diet reconstruction studies that rely on tissue chemical signatures aim at providing estimates on the relative intake of potential food groups. However, several sources of uncertainty need to be considered when handling data. Bayesian mixing models provide a natural platform to handle diverse sources of uncertainty while allowing the user to contribute with prior expert information. The Bayesian mixing model FRUITS (Food Reconstruction Using Isotopic Transferred Signals) was developed for use in diet reconstruction studies. FRUITS incorporates the capability to account for dietary routing, that is, the contribution of different food fractions (e.g. macronutrients) towards a dietary proxy signal measured in the consumer. FRUITS also provides relatively straightforward means for the introduction of prior information on the relative dietary contributions of food groups or food fractions. This type of prior may originate, for instance, from physiological or metabolic studies. FRUITS performance was tested using simulated data and data from a published controlled animal feeding experiment. The feeding experiment data was selected to exemplify the application of the novel capabilities incorporated into FRUITS but also to illustrate some of the aspects that need to be considered when handling data within diet reconstruction studies. FRUITS accurately predicted dietary intakes, and more precise estimates were obtained for dietary scenarios in which expert prior information was included. FRUITS represents a useful tool to achieve accurate and precise food intake estimates in diet reconstruction studies within different scientific fields (e.g. ecology, forensics, archaeology, and dietary physiology).
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