Results 21 to 30 of about 26,129,289 (257)

A New Feature Extraction Method Based on the Information Fusion of Entropy Matrix and Covariance Matrix and Its Application in Face Recognition

Entropy, 2015
The classic principal components analysis (PCA), kernel PCA (KPCA) and linear discriminant analysis (LDA) feature extraction methods evaluate the importance of components according to their covariance contribution, not considering the entropy ...
Shunfang Wang, Ping Liu
doaj   +1 more source

Chemomertic Risk Assessment of Soil Pollution

Open Chemistry, 2019
In this study, an interpretation and modeling of the soil quality by monitoring data using an intelligent data analysis is presented. On an annual average, values of 12 soil surface chemical parameters as input variables were determined at 35 sampling ...
Nedyalkova Miroslava, Simeonov Vasil
doaj   +1 more source

Recursive Principal Components Analysis Using Eigenvector Matrix Perturbation

EURASIP Journal on Advances in Signal Processing, 2004
Principal components analysis is an important and well-studied subject in statistics and signal processing. The literature has an abundance of algorithms for solving this problem, where most of these algorithms could be grouped into one of the following ...
Deniz Erdogmus, Yadunandana N. Rao, Hemanth Peddaneni, Anant Hegde, Jose C. Principe   +4 more
doaj   +1 more source

Composição química da precipitação úmida da região metropolitana de Porto Alegre, Brasil, 2005- 2007

Química Nova, 2012
This work aims to quantify the wet precipitation the Metropolitan Area of Porto Alegre (MAPA), in southern Brazil, through the analysis of major ions (by ion chromatography) and metallic elements (ICP/AES).
Daniela Montanari Migliavacca, Elba Calesso Teixeira, Maria Teresa Raya Rodriguez   +2 more
doaj   +1 more source

Principal Components Analysis of EEG Signals for Epileptic Patient Identification

Computation, 2021
According to the behavior of its neuronal connections, it is possible to determine if the brain suffers from abnormalities such as epilepsy. This disease produces seizures and alters the patient’s behavior and lifestyle.
Maria Camila Guerrero, Juan Sebastián Parada, Helbert Eduardo Espitia   +2 more
doaj   +1 more source

External preference map to evaluate the acceptance of light and diet yogurt preparedusingnatural sweeteners

Ciência Rural, 2018
: Owing to the high demand for healthier foods, the food industry has been marketing diet and light yogurts. The present study aimed to sensorially evaluate yogurts prepared using natural sweeteners through a simple centroid mixture design with three ...
Daiana Aparecida de Carvalho, Gerson de Freitas Silva Valente, Giovana Maria Pereira Assumpção   +2 more
doaj   +1 more source

ارزیابی ژنوتیپ‎های یولاف زراعی (Avena sativa L.) با استفاده از شاخص‎های تحمل خشکی [PDF]

تنش های محیطی در علوم زراعی, 2016
یولاف به‌عنوان یکی از غلاتی که در اغلب نقاط دنیا کشت می‎گردد، دارای خواص غذایی و دارویی بسیاری است و این ظرفیت را دارد که در ایران نیز به‌طور اقتصادی کشت‌وکار شود، اما همانند بسیاری دیگر از محصولات زراعی تنش خشکی می‎تواند ازجمله موانع توسعه و تولید مطلوب
صحبت بهرامی نژاد, رضوان کشوری, رضا امیری   +2 more
doaj   +1 more source

Solid Pseudopapillary Neoplasm of the Pancreas in Children and Adolescents: Expert Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Solid pseudopapillary neoplasm of the pancreas (SPN) is a rare low‐grade malignant exocrine pancreatic tumor, mostly discovered during the second decade of life in females, with a very good prognosis, provided microscopically complete surgical excision is achieved.
Sabine Irtan, Michael Abele, Calogero Virgone, Michaela Kuhlen, Ricardo Lopez‐Almarez, Tal Ben‐Ami, Ewa Bien, Maja Cesen, Malgorzata A. Krawczyk, Andrea Ferrari, Gianni Bisogno, Yves Reguerre, Dominik T. Schneider, Louise Galmiche, Jorg Fuchs, Sarah Braungart, Bilgehan Yalcin, Ines B. Brecht, Daniel Orbach   +18 more
wiley   +1 more source

Evolving faces from principal components [PDF]

, 2000
A system that uses an underlying genetic algorithm to evolve faces in response to user selection is described. The descriptions of faces used by the system are derived from a statistical analysis of a set of faces.
Hancock, Peter J B, Peter J. B. Hancock
core   +1 more source

Ovarian Sex Cord Stromal Tumors in Children and Adolescents—The European Standard Clinical Practice Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT As part of the European Cooperative Study Group for Paediatric Rare Tumours initiative, we developed standard clinical practice guidelines for ovarian sex cord stromal tumors, based on comprehensive national and international cohort analyses, literature review, and a final expert consensus conference.
Dominik T. Schneider, Kris‐Ann Schultz, Nora Schnitzler, Michael Abele, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Ines B. Brecht, Maja Cesen, Andrea Ferrari, Michaela Kuhlen, Malgorzata A. Krawczyk, Ricardo Lopez‐Almaraz, Yves Reguerre, Calogero Virgone, Daniel Orbach   +15 more
wiley   +1 more source