Statistical questions in estimating postmortem interval from insect evidence – prof. Lynn R. LaMotte – 12.6.2012

24.05.2012 08:06  |  Comments Off  |  od Langhamrova Jana  |  Akce, Články

Přednáška se koná v úterý 12. června 2012 od 10:00 v učebně PRAKTIKUM KPMS (Sokolovská 83, 1. patro vpravo).

Abstract: Insect evidence around a decomposing body can provide a biological clock by which the time of exposure can be estimated. As decomposition progresses, fly larvae grow and go through distinct developmental stages, and a succession of insect species visits the scene.
Viewed broadly, the question, how long the body has been exposed, fits into the framework of inverse prediction. However, insect evidence is both quantitative and categorical. Size data are multivariate, and their magnitudes, variances, and correlations change with age. Presence/absence of important species manifests categorically, but the number of distinct categories can number in the thousands.

The statistical challenge is to devise an approach that can provide a credible, defensible estimate of postmortem interval based on such data. In this talk I shall present the setting and describe joint work I have undertaken with Jeffrey D. Wells, a forensic entomologist, to address this question.


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