Performance enhancement based on machine learning scheme for space multiplexing 2×2 MIMO VLC system employing joint IQ independent component analysis

2020 ◽  
Vol 458 ◽  
pp. 124733 ◽  
Author(s):  
Zhe Wang ◽  
Siqi Han ◽  
Nan Chi
Keyword(s):  
Machine Learning ◽  
Independent Component Analysis ◽  
Performance Enhancement ◽  
Component Analysis ◽  
Independent Component ◽  
Learning Scheme

scholarly journals Classification of Alcoholic and Non-Alcoholic EEG Signals Based on Sliding-SSA and Independent Component Analysis

2021 ◽  
Author(s):  
Muhammad Zubair
Keyword(s):  
Machine Learning ◽  
Independent Component Analysis ◽  
Singular Spectrum Analysis ◽  
Component Analysis ◽  
Independent Component ◽  
Computational Time ◽  
Learning Models ◽  
Eeg Signals ◽  
Ica Algorithm ◽  
Machine Learning Models

<pre>Alcoholism is a widely affected disorder that leads to critical brain deficiencies such as emotional and behavioural impairments. One of the prominent sources to detect alcoholism is by analysing Electroencephalogram (EEG) signals. Previously, most of the works have focused on detecting alcoholism using various machine and deep learning algorithms. This paper has used a novel algorithm named Sliding Singular Spectrum Analysis (S-SSA) to decompose and de-noise the EEG signals. We have considered independent component analysis (ICA) to select the prominent alcoholic and non-alcoholic components from the preprocessed EEG data. Later, these components were used to train and test various machine learning models like SVM, KNN, ANN, GBoost, AdaBoost and XGBoost to classify alcoholic and non-alcoholic EEG signals. The sliding SSA-ICA algorithm helps in reducing the computational time and complexity of the machine learning models. To validate the performance of the ICA algorithm, we have compared the computational time and accuracy of ICA with its counterpart, like principal component analysis (PCA). The proposed algorithm is tested on a publicly available UCI alcoholic EEG dataset. To verify the performance of machine learning models, we have calculated various metrics like accuracy, precision, recall and F1 score. Our work reported the highest accuracy of 98.97% with the XGBoost classifier. The validation of the proposed method is done by comparing the classification metrics with the latest state-of-the-art works.</pre>

scholarly journals Multimodal fusion of structural and functional brain imaging in depression using linked independent component analysis

2019 ◽  
Author(s):  
Luigi A. Maglanoc ◽  
Tobias Kaufmann ◽  
Rune Jonassen ◽  
Eva Hilland ◽  
Dani Beck ◽  
...  
Keyword(s):  
Machine Learning ◽  
Independent Component Analysis ◽  
Brain Imaging ◽  
Component Analysis ◽  
Case Control ◽  
Independent Component ◽  
Multimodal Fusion ◽  
Imaging Biomarkers ◽  
Depression And Anxiety ◽  
Age And Sex

AbstractBackgroundPrevious structural and functional neuroimaging studies have implicated distributed brain regions and networks in depression. However, there are no robust imaging biomarkers that are specific to depression, which may be due to clinical heterogeneity and neurobiological complexity. A dimensional approach and fusion of imaging modalities may yield a more coherent view of the neuronal correlates of depression.MethodsWe used linked independent component analysis to fuse cortical macrostructure (thickness, area, gray matter density), white matter diffusion properties and resting-state fMRI default mode network amplitude in patients with a history of depression (n = 170) and controls (n = 71). We used univariate and machine learning approaches to assess the relationship between age, sex, case-control status, and symptom loads for depression and anxiety with the resulting brain components.ResultsUnivariate analyses revealed strong associations between age and sex with mainly global but also regional specific brain components, with varying degrees of multimodal involvement. In contrast, there were no significant associations with case-control status, nor symptom loads for depression and anxiety with the brain components, nor any interaction effects with age and sex. Machine learning revealed low model performance for classifying patients from controls and predicting symptom loads for depression and anxiety, but high age prediction accuracy.ConclusionMultimodal fusion of brain imaging data alone may not be sufficient for dissecting the clinical and neurobiological heterogeneity of depression. Precise clinical stratification and methods for brain phenotyping at the individual level based on large training samples may be needed to parse the neuroanatomy of depression.

Automated EOG Removal from EEG Signal Using Independent Component Analysis and Machine Learning Algorithms

2021 ◽  
pp. 1001-1016
Author(s):  
Tu Thanh Do ◽  
Thuong Hoai Nguyen ◽  
Tho Anh Le ◽  
Sinh Anh Thi Nguyen ◽  
Quyen Thao Ngoc Nguyen ◽  
...  
Keyword(s):  
Machine Learning ◽  
Independent Component Analysis ◽  
Learning Algorithms ◽  
Component Analysis ◽  
Machine Learning Algorithms ◽  
Independent Component ◽  
Eeg Signal
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