The application of a CART model for forensic human geolocation using stable hydrogen and oxygen isotopes

ABSTRACT: The utility of stable hydrogen and oxygen isotope analysis of human tissues for geolocation is an important area of study within forensic science. This study aimed to first validate the latitudinal relationship between stable hydrogen and oxygen isotopes in drinking water and human keratinous tissues through the analysis of human samples with known geographical origin. And secondly, to explore the use of classification and regression tree (CART) models to geographically classify individuals based on the stable isotope values of tissues themselves. Human hair and toenails were collected from four distinct study sites across Canada. The comparison of stable isotope values in drinking water and human tissues produced low R2 values indicating that linear models may not fully explain the variat

SUBMITTER: Ueda M 

PROVIDER: S-EPMC9729567 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature