Results 261 to 270 of about 62,563 (288)

Hierarchical speaker verification: Kernel fisher discriminant plus Mixed-PCA classifier and FCM clustering

2015 12th International Conference on Fuzzy Systems and Knowledge Discovery (FSKD), 2015
In order to improve speaker verification accuracy, we proposed a new hierarchical speaker verification algorithm in this paper. In our algorithm, Mixed-PCA plus fuzzy c-means (FCM) clustering was combined with kernel fisher discriminant (KFD). In stage of feature extraction, we exploited PCA to reduce the feature vector dimensions, and then FCM was ...
Ping Tan, Yujuan Xing
openaire   +1 more source

Enhanced approach for geopolymer mix-design and performance evaluation: Integrating hybrid Taguchi-GRA-PCA for improved properties and behavioral insights

Construction and Building Materials
Arpitha BJ, Pavithra Parthasarathy
exaly   +2 more sources

Content-Based Mammogram Retrieval Using Mixed Kernel PCA and Curvelet Transform

2016
Content-based image retrieval (CBIR) has recently emerged as a promising method to assist radiologists in diagnosing mammographic masses by displaying pathologically similar cases. In this paper, a CBIR system using curvelet transform and kernel principal component analysis (KPCA) is proposed.
Sami Dhahbi, Walid Barhoumi, Ezzeddine Zagrouba   +2 more
openaire   +1 more source

Nanofiltration of single and mixed salt solutions: Analysis of results using principal component analysis (PCA)

Chemical Engineering Research and Design, 2010
Abstract The retention of single (NaCl) and mixed (Na2SO4 + NaCl) salt solutions by nanofiltration membranes was analysed using principal component analysis (PCA). Seven variables—five different membranes (Desal-5DK, NF 270, NF Filmtec, NF 20 and ESNA-1-LF), flux and salt concentration—were taken into account in the analysis.
Mehrdad Hesampour, Jukka Tanninen, Satu-Pia Reinikainen, Samantha Platt, Marianne Nyström   +4 more
openaire   +1 more source

Sensitivity and uncertainty analysis of mixing and mass balance calculations with standard and PCA-based geochemical codes

Applied Geochemistry, 2008
Abstract One of the most important observations that can be obtained from the study of an aquifer system dominated by mixing is the contribution of each end-member water to the chemical composition of every water parcel in the aquifer. Once the first-order effect of mixing has been taken into account via the mixing proportions, water–rock interaction
J.B. Gómez, L.F. Auqué, M.J. Gimeno
openaire   +1 more source

Direct nanocrystallite size investigation in microstrained mixed phase TiO2 nanoparticles by PCA of Raman spectra

Applied Surface Science, 2019
Abstract Mixed phase anatase and rutile TiO2 nanoparticles (30–67% R/A) have been synthesized by single step laser pyrolysis. Parallel studies by XRD and Raman spectroscopy suggested possible deforming microstress inside certain samples, due to boundary interactions between neighbouring nanocrystallites in nanoparticles, phase instabilities and/or O ...
Monica Scarisoreanu, Alina Ilie, Elena Dutu, Anca Badoi, Florian Dumitrache, Eugenia Tanasa, Cristian N. Mihailescu, Ion Mihailescu   +7 more
openaire   +1 more source

Outlier detection using PCA mix basedT²control chart for continuous and categorical data

Communications in Statistics - Simulation and Computation, 2019
Outliers presence may lead to misdetection on out-of-control observations in Phase II, therefore, they should be cleaned in Phase I.
Muhammad Ahsan, Muhammad Mashuri, Heri Kuswanto, Dedy Dwi Prastyo, Hidayatul Khusna   +4 more
openaire   +1 more source

Identifying Stratifications of Cancer Patient Visits: Approach of Clustering Using PCA of Mixed Data

Proceedings of The International Conference on Data Science and Official Statistics
Cancer is a significant contributor to the burden of non-communicable diseases and one of the diseases with the highest costs in Indonesia’s health insurance system. Understanding key factors influencing cancer patient visits and risk groups under national health insurance supports evidence-based and sustainable cancer care financing.
Kristiana Yunitaningtyas, Herianti Herianti   +1 more
openaire   +1 more source

[Galaxy spectrum subtraction of a mixed spectrum based on two class PCA eigen-spectra].

Guang pu xue yu guang pu fen xi = Guang pu, 2015
The authors present a new method called two class PCA for decomposing the mixed spectra, namely, for subtracting the host galaxy contamination from each SN spectrum. The authors improved the quality of reconstructed galaxy spectrum and computational efficiency, and these improvements were realized because we used both the PCA eigen spectra of galaxy ...
Liang-Ping, Tu, Fu-Chao, Wu, A-Li, Luo, Yong-Heng, Zhao   +3 more
openaire   +1 more source

High methylation potential of mercury complexed with mixed thiolate ligands by Geobacter sulfurreducens PCA

Geochimica et Cosmochimica Acta, 2023
Xujun Liang, Alexander Johs, Macon J. Abernathy, Jiating Zhao, Hongxia Du, Peijia Ku, Lijie Zhang, Nali Zhu, Xiangping Yin, Scott Brooks, Linduo Zhao, Ritimukta Sarangi, Eric M. Pierce, Baohua Gu   +13 more
openaire   +1 more source