Principle component analysis-based optimized feature extraction merged with nonlinear regression model for improved state-of-health prediction

2022 ◽  
Vol 48 ◽  
pp. 104026
Author(s):  
Pyeong-Yeon Lee ◽  
Sanguk Kwon ◽  
Deokhun Kang ◽  
Inho Cho ◽  
Jonghoon Kim
Author(s):  
Basavaraj N Hiremath ◽  
Malini M Patilb

The voice recognition system is about cognizing the signals, by feature extraction and identification of related parameters. The whole process is referred to as voice analytics. The paper aims at analysing and synthesizing the phonetics of voice using a computer program called “PRAAT”. The work carried out in the paper also supports the analysis of voice segmentation labelling, analyse the unique features of voice cues, understanding physics of voice, further the process is carried out to recognize sarcasm. Different unique features identified in the work are, intensity, pitch, formants related to read, speak, interactive and declarative sentences by using principle component analysis.


Author(s):  
M. Islabudeen ◽  
P. Vigneshwaran ◽  
G. Sindhu Madhuri ◽  
B. Muthu Kumar ◽  
J. Ragaventhiran ◽  
...  

2021 ◽  
Vol 10 (5) ◽  
pp. 2588-2597
Author(s):  
Dalia Mohammad Toufiq ◽  
Ali Makki Sagheer ◽  
Hadi Veisi

The Identification of brain tumors is a critical step that relies on the expertise and abilities of the physician. In order to enable radiologists to spot brain tumors, an automated tumor arrangement is extremely important. This paper presents a technique for MR brain image segmentation and classification to identify images as normal and abnormal. The proposed technique is a hybrid feature extraction submitted to enhance the classification results and basically consists of three stages. The first stage is used a 3-level of discrete wavelet transform (DWT) to extract image characteristics. In the second stage, the principle component analysis (PCA) is applied to reduce the size of characteristics. Finally, a random forest classifier (RF) was used with a feature selection for identification. 181 MR brain images are collected (81 normal and 100 abnormal), in distinguishing normal and abnormal tissues, the experimental results obtained an accuracy of 98%, the sensitivity achieved is 99.2%, specificity achieved is 97.8%, and showed the effectiveness of the proposed technique compared with many kinds of literature. The results show that the 3L-DWT+PCA+RF still achieved the best classification results. The proposed model could apply to the brain MRI sphere classification, which will help doctors to diagnose a tumor if it is normal or abnormal in certain degrees. 


2010 ◽  
Vol 14 (6) ◽  
pp. 525-531
Author(s):  
Cai Qing-Yun ◽  
Peng Li ◽  
Wang Rong-Hui ◽  
Nie Li-Hua ◽  
Yao Shou-Zhuo

2003 ◽  
Vol 26 (6) ◽  
pp. 681-682
Author(s):  
Harry Howard

Jackendoff's criticisms of the current state of theorization in cognitive neuroscience are defused by recent work on the computational complementarity of the hippocampus and neocortex. Such considerations lead to a grounding of Jackendoff's processing model in the complementary methods of pattern analysis effected by independent component analysis (ICA) and principle component analysis (PCA).


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