Artificial Neural Networks Compared to Factor Analysis for Low-Dimensional Classification of High-Dimensional Body Fat Topography Data of Healthy and Diabetic Subjects

2000 ◽  
Vol 33 (5) ◽  
pp. 365-374 ◽  
Author(s):  
Erwin Tafeit ◽  
Reinhard Möller ◽  
Karl Sudi ◽  
Gilbert Reibnegger
Keyword(s):  
Neural Networks ◽  
Factor Analysis ◽  
Artificial Neural Networks ◽  
Body Fat ◽  
High Dimensional ◽  
Dimensional Classification ◽  
Artificial Neural ◽  
Low Dimensional ◽  
Topography Data

scholarly journals Feature extraction and artificial neural networks for the on-the-fly classification of high-dimensional thermochemical spaces in adaptive-chemistry simulations

2021 ◽  
Vol 2 ◽  
Author(s):  
Giuseppe D’Alessio ◽  
Alberto Cuoci ◽  
Alessandro Parente
Keyword(s):  
Neural Networks ◽  
Feature Extraction ◽  
Artificial Neural Networks ◽  
Laminar Flame ◽  
Principal Component ◽  
Precursor Chemistry ◽  
High Dimensional ◽  
Adaptive Simulation ◽  
Artificial Neural

Abstract The integration of Artificial Neural Networks (ANNs) and Feature Extraction (FE) in the context of the Sample- Partitioning Adaptive Reduced Chemistry approach was investigated in this work, to increase the on-the-fly classification accuracy for very large thermochemical states. The proposed methodology was firstly compared with an on-the-fly classifier based on the Principal Component Analysis reconstruction error, as well as with a standard ANN (s-ANN) classifier, operating on the full thermochemical space, for the adaptive simulation of a steady laminar flame fed with a nitrogen-diluted stream of n-heptane in air. The numerical simulations were carried out with a kinetic mechanism accounting for 172 species and 6,067 reactions, which includes the chemistry of Polycyclic Aromatic Hydrocarbons (PAHs) up to C $ {}_{20} $ . Among all the aforementioned classifiers, the one exploiting the combination of an FE step with ANN proved to be more efficient for the classification of high-dimensional spaces, leading to a higher speed-up factor and a higher accuracy of the adaptive simulation in the description of the PAH and soot-precursor chemistry. Finally, the investigation of the classifier’s performances was also extended to flames with different boundary conditions with respect to the training one, obtained imposing a higher Reynolds number or time-dependent sinusoidal perturbations. Satisfying results were observed on all the test flames.

Classification of ground-truth fire debris samples using artificial neural networks

2021 ◽  
Vol 23 ◽  
pp. 100313
Author(s):  
Nicholas A. Thurn ◽  
Taylor Wood ◽  
Mary R. Williams ◽  
Michael E. Sigman
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Ground Truth ◽  
Fire Debris ◽  
Artificial Neural

Easy classification of traditional Minas cheeses using artificial neural networks and discriminant analysis

2017 ◽  
Vol 70 (4) ◽  
pp. 492-498 ◽  
Author(s):  
Leandro S Santos ◽  
Roberta M D Cardozo ◽  
Natália Moreiria Nunes ◽  
Andréia B Inácio ◽  
Ana Clarissa dos S Pires ◽  
...  
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Discriminant Analysis ◽  
Artificial Neural

Evaluation of artificial neural networks in the classification of primary oesophageal dysmotility

2006 ◽  
Vol 41 (3) ◽  
pp. 257-263 ◽  
Author(s):  
Robespierre Santos ◽  
Horst G. Haack ◽  
Des Maddalena ◽  
Ross D. Hansen ◽  
John E. Kellow
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Artificial Neural ◽  
Oesophageal Dysmotility
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