Two Tier Prediction of Stroke Using Artificial Neural Networks and Support Vector Machines
This work addresses stroke prediction for medical diagnosis, but it is incremental as it combines existing methods like ANN and SVM in a two-tier approach.
The paper tackles stroke prediction by proposing a two-tier system using an Artificial Neural Network (ANN) for initial risk assessment based on patient risk factors, achieving 96.67% accuracy, and a second tier using MRI analysis with SVM classification, achieving 70% accuracy.
Cerebrovascular accident (CVA) or stroke is the rapid loss of brain function due to disturbance in the blood supply to the brain. Statistically, stroke is the second leading cause of death. This has motivated us to suggest a two-tier system for predicting stroke; the first tier makes use of Artificial Neural Network (ANN) to predict the chances of a person suffering from stroke. The ANN is trained the using the values of various risk factors of stroke of several patients who had stroke. Once a person is classified as having a high risk of stroke, s/he undergoes another the tier-2 classification test where his/her neuro MRI (Magnetic resonance imaging) is analysed to predict the chances of stroke. The tier-2 uses Non-negative Matrix Factorization and Haralick Textural features for feature extraction and SVM classifier for classification. We have obtained an accuracy of 96.67% in tier-1 and an accuracy of 70% in tier-2.