Affiliations: LIAAD – INESC TEC, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal
Correspondence:
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Corresponding author: Ana Rita Nogueira, LIAAD – INESC TEC, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal. E-mail: ana.r.nogueira@inesctec.pt.
Abstract: The Acute Kidney Injury (AKI), is a disease that affects the kidneys and is characterized by the rapid deterioration of these organs, usually associated with a pre-existing critical illness. Being an acute disease, time is a key element in the prevention. By anticipating a patient’s state transition, we are preventing future complications in his health, such as the development of a chronic disease or loss of an organ, in addition to decreasing the amount of money spent on the patient’s care. The main goal of this paper is to address the problem of correctly predicting the illness path in various patients by studying different methodologies to predict this disease and propose new distinct approaches based on this idea of improving the performance of the classification. Through the comparison of five different approaches (Markov Chain Model ICU Specialists, Markov Chain Model Features, Markov Chain Model Conditional Features, Markov Chain Model and Random Forest), we came to the conclusion that the application of conditional probabilities to this problem produces a more accurate prediction, based on common inputs.
Keywords: AKI, Markov Chain Model, RIFLE, Intensive Care Unit, Random Forest, conditional probability, feature selection, feature engineering, information gain
