Multi Variate Feature Extraction and Feature Selection using LGKFS Algorithm for Detecting Alzheimer’s Disease

K Emily Esther Rani; S Baulkani

doi:10.17485/IJST/v16i22.707

Article

Multi Variate Feature Extraction and Feature Selection using LGKFS Algorithm for Detecting Alzheimer’s Disease

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Indian Journal of Science and Technology

DOI: 10.17485/IJST/v16i22.707

Year: 2023, Volume: 16, Issue: 22, Pages: 1665-1675

Original Article

Multi Variate Feature Extraction and Feature Selection using LGKFS Algorithm for Detecting Alzheimer’s Disease

K Emily Esther Rani^1*, S Baulkani²

¹Assistant Professor, Department of Computer Science and Engineering, Jayaraj Annapackiam CSI College of Engineering, Nazareth, 628617, Tamil Nadu, India
²Professor, Department of Electronics and Communication Engineering, Government College of Engineering, Tirunelveli, 627007, Tamil Nadu, India

*Corresponding Author
Email: [email protected]

Received Date:26 March 2023, Accepted Date:18 May 2023, Published Date:07 June 2023

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Objectives: This study focuses on machine learning techniques to classify various stages of Alzheimer’s Disease(AD). Methods: Absolutely, 1,997 PD weighted Resting State Functional MRI (rsFMRI) images were acquired from ADNI-3 dataset for the classification of AD. First, input rsFMRI images from the dataset were preprocessed and segmented. After segmentation, we have extracted multi variate features. Then, we have proposed Lasso with Graph Kernel Feature Selection (LGKFS) algorithm for selecting the best features. Finally, Radom Forest algorithm is applied to perform multi class classification for classifying all the stages of AD. Findings: In order to find the accuracy of this approach, cross validations were performed in the ADNI 3 dataset. We have measured the accuracy of RF classifier using three feature selection algorithms. The RF classifier with LASSO achieved 79.94% accuracy, 79.31% precision, 79.69% recall and 79.48% F1 score. The RF classifier with GK-FS achieved 76.52% accuracy, 84.0% precision, 79.19% recall and 79.77% F1 score respectively. By using our LGKFS algorithm, 90.8% accuracy, 82.4% precision ,81.6% recall and 81.6% F1 score was achieved by RF classifier which is higher than the existing feature selection techniques such as LASSO and GK-FS. Novelty: In this, a new hybrid feature selection algorithm namely LGKFS algorithm is introduced which combines two well-known feature selection algorithms Lasso Regression and GK-FS algorithm to improve classification accuracy.

Keywords: Alzheimer disease; Feature Extraction; Feature Selection Machine Learning; Mild Cognitive Impairment; Statistical Parameter Mapping

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Copyright

© 2023 Rani & Baulkani. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)