| Abstrakt: |
Alzheimer's disease (AD) is a neurodevelopmental impairment that results in a person's behavior, thinking, and memory loss. Themost common symptoms of ADare losingmemory and early aging. In addition to these, there are several serious impacts of AD. However, the impact of AD can be mitigated by early-stagedetection though it cannot be cured permanently. Early-stage detection is the most challenging task for controlling and mitigating the impact of AD. The study proposes a predictive model to detect AD in the initial phase based on machine learning and a deep learning approach to address the issue. To build a predictive model, open-source data was collected where five stages of images of AD were available as Cognitive Normal (CN), Early Mild Cognitive Impairment (EMCI), Mild Cognitive Impairment (MCI), Late Mild Cognitive Impairment (LMCI), and AD. Every stage of AD is considered as a class, andthenthe datasetwas dividedintothree partsbinary class, three class, andfive class. In this research, we applied different preprocessing steps with augmentation techniques to efficiently identifyAD. It integrates a random oversampling technique to handle the imbalance problem from target classes, mitigating the model overfitting and biases. Then three machine learning classifiers, such as random forest (RF), K-Nearest neighbor (KNN), and support vector machine (SVM), and two deep learning methods, such as convolutional neuronal network (CNN) and artificial neural network (ANN) were applied on these datasets. After analyzing the performance of the used models and the datasets, it is found that CNN with binary class outperformed 88.20% accuracy. The result of the study indicates that the model is highly potential to detect AD in the initial phase. [ABSTRACT FROM AUTHOR] |
