A Model for Predicting Sepsis in Polytrauma Patients in the ICU Abstract: Sepsis is a life-threatening, critical condition often encountered in a hospital's intensive care unit (ICU). Starting as a body's response to infection, sepsis causes injury to the patient's tissue and organs and can lead to severe sepsis or septic shock, resulting in multiple organ failure and high risk of mortality. However, sepsis can be treated effectively if identified early and medicated in a timely manner. We present work in progress on a model that is able to predict sepsis with an AUROC of up to 0.82 before sepsis onset in a polytrauma cohort in the ICU. Our experiments show that careful selection of training examples and the incorporation of physicians' knowledge is crucial for the predictive power of such a model.