Off-campus Eastern Washington University users: To download EWU Only theses, please use the following link to log into our proxy server with your EWU NetID and password.
Non-EWU users: Please talk to your local librarian about requesting this thesis through Interlibrary loan.
Date of Award
Access perpetually restricted to EWU users with an active EWU NetID
Thesis: EWU Only
Master of Science (MS) in Computer Science
Dr. Dan Li
Dr. Carol Taylor
Dr. Robin O'Quinn
The purpose of this research is to study the performance of kNN (k Nearest Neighbor) classification approach to determine patients’ mortality rate using ICU (Intensive Care Unit) medical records. The ICU data contains medical records collected during the patients’ first 48 hours stay at the ICU. The challenge of this research is the processing of ICU multivariate and high dimensional time-series data collected at irregular time periods. To handle the ICU irregular multivariate time-series three different methods were developed: Capture Statistics, Detect Changes, and Aggregate Segments. We examine the effectiveness of each method on kNN classification. In addition, this paper addresses imbalanced class distributions and their effect on kNN performance.
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Djulovic, Admir, "A study of kNN using ICU multivariate time series data" (2014). EWU Masters Thesis Collection. 262.