Zooarchaeological Survivorship Models using Ordered Logistic Regression

This project involves creating ordered logistic regression models for zooarchaeological survivorship analyses. Zooarchaeological data typically involve unknown ages-at-death, with elements assigned into ranked "age stages" that indirectly relate to biological age. The model developed in this project uses aoristic assignments to assign "probabilities of stage membership" to fragments, which are then fit using an ordered logistic regression.