scholarly journals Semi-Supervised Adaptive Neuro Fuzzy Inference System (SSANFIS) for Effective Classification of Alzheimer's Disease

Alzheimer's disease (AD) is the most popular dementia in elderly people worldwide. It affects memory of the patient. The early detection of Alzheimer’s disease still a challenge because of the estimation of the scans depends on manual directing and visual reading. To overcome this issue, Semi-Supervised Adaptive Neuro Fuzzy Inference System (SSANFIS) is introduced for effective classification of alzheimer's disease. In this work, an Improved Artificial Bee Colony (IABC) algorithm is used for preprocessing step which provides higher classification performance. It removes noises from the images based on the employed bees, onlooker bees and scout bees calculation. Then using the Adaptive Median Filter (AMF) enhances the quality of the images by comparing each pixel in the image to its surrounding neighbor pixels. The Hybrid Wavelet Transform (HWT) is enhanced using Haar with Walsh wavelet transform; it is used to extract the features from the MRI images. Unsupervised Fuzzy C Means (USFCM) is applied for selecting the important features from the extracted features. The model is learned by using Semi-Supervised Adaptive Neuro Fuzzy Inference System (SSANFIS) approach. It selects optimal fuzzy rules based on the higher frequency rules which are used to increase the accurate classification results which provide higher results than other methods

2008 ◽  
Vol 36 (9) ◽  
pp. 1449-1457 ◽  
Author(s):  
Zoya Heydari ◽  
Farzam Farahmand ◽  
Hossein Arabalibeik ◽  
Mohamad Parnianpour

2018 ◽  
Vol 72 (3) ◽  
pp. 685-701 ◽  
Author(s):  
Rui Sun ◽  
Li-Ta Hsu ◽  
Dabin Xue ◽  
Guohao Zhang ◽  
Washington Yotto Ochieng

The multipath effect and Non-Line-Of-Sight (NLOS) reception of Global Positioning System (GPS) signals both serve to degrade performance, particularly in urban areas. Although receiver design continues to evolve, residual multipath errors and NLOS signals remain a challenge in built-up areas. It is therefore desirable to identify direct, multipath-affected and NLOS GPS measurements in order improve ranging-based position solutions. The traditional signal strength-based methods to achieve this, however, use a single variable (for example, Signal to Noise Ratio (C/N0)) as the classifier. As this single variable does not completely represent the multipath and NLOS characteristics of the signals, the traditional methods are not robust in the classification of signals received. This paper uses a set of variables derived from the raw GPS measurements together with an algorithm based on an Adaptive Neuro Fuzzy Inference System (ANFIS) to classify direct, multipath-affected and NLOS measurements from GPS. Results from real data show that the proposed method could achieve rates of correct classification of 100%, 91% and 84%, respectively, for LOS, Multipath and NLOS based on a static test with special conditions. These results are superior to the other three state-of-the-art signal reception classification methods.


Heliyon ◽  
2019 ◽  
Vol 5 (8) ◽  
pp. e02046 ◽  
Author(s):  
Choug Abdelkrim ◽  
Mohamed Salah Meridjet ◽  
Nadir Boutasseta ◽  
Lakhdar Boulanouar

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