Results 31 to 40 of about 601,144 (294)

Potential Partnerships: Progressive Criminology, Grassroots Organizations and Social Justice

open access: yesInternational Journal for Crime, Justice and Social Democracy, 2015
Criminologists around the globe are writing about the disproportionate criminalization of minority groups and – in the US in particular – about racial disproportionality in all aspects of the criminal justice system.
Tim Goddard   +2 more
doaj   +1 more source

A chemometric approach to the headspace sampled volatiles of selected Salvia species from Southeastern Serbia [PDF]

open access: yesBotanica Serbica, 2022
Headspace sampling is a fast, simple and economical way to prepare plant samples for analysis by gas chromatography. For the first time, the composition of the head space volatiles (HSV) of six Salvia species (S. verticillata, S. glutinosa, S.
Emilija Kostić   +5 more
doaj   +1 more source

Effective feature extraction and data reduction with hyperspectral imaging in remote sensing [PDF]

open access: yes, 2014
Although PCA has been widely used for feature extraction and data reduction, it suffers from three main drawbacks: high computational cost, large memory requirement and low efficacy in processing large datasets such as HSI.
Zabalza, Jaime   +3 more
core   +4 more sources

Overview of 2D-PCA MSM (smaller dotted rectangle) and 2D-PCA-R MSM (larger dotted rectangle).

open access: yes, 2021
Overview of 2D-PCA MSM (smaller dotted rectangle) and 2D-PCA-R MSM (larger dotted rectangle).
Yumi Iwashita (11261748)   +3 more
core   +1 more source

Comparison of temporal and spatial patterns of water quality parameters in Anzali Wetland (southwest of the Caspian Sea) using Support vector machine model [PDF]

open access: yesCaspian Journal of Environmental Sciences, 2021
Urgent is growing to have reliable information from the country's water resources. In recent years, data mining models such as artificial neural network (ANN), gene expression programming, Bayesian network, machine algorithms, such as a support vector ...
Maryam Fallah   +3 more
doaj   +1 more source

Geometric PCA of Images

open access: yesSIAM Journal on Imaging Sciences, 2013
We describe a method for analyzing the principal modes of geometric variability of images. For this purpose, we propose a general framework based on the use of deformation operators for modeling the geometric variability of images around a reference mean pattern.
Bigot, Jérémie   +2 more
openaire   +8 more sources

$e$PCA: High dimensional exponential family PCA

open access: yesThe Annals of Applied Statistics, 2018
Many applications, such as photon-limited imaging and genomics, involve large datasets with noisy entries from exponential family distributions. It is of interest to estimate the covariance structure and principal components of the noiseless distribution.
Liu, Lydia T.   +2 more
openaire   +4 more sources

DWT/PCA face recognition using automatic coefficient selection [PDF]

open access: yes, 2008
In PCA-based face recognition, there is often a trade-off between selecting the most relevant parts of a face image for recognition and not discarding information which may be useful.
Paul Nicholl   +3 more
core   +1 more source

Comparison of correct classification rate (CCR) [%] of each of MSM [12], the proposed 2D-PCA MSM, the proposed 2D-PCA-R MSM (θ = −10), and the proposed B-2D-PCA-R MSM on CASIA-C [14] (slow walk fs).

open access: yes, 2021
Comparison of correct classification rate (CCR) [%] of each of MSM [12], the proposed 2D-PCA MSM, the proposed 2D-PCA-R MSM (θ = −10), and the proposed B-2D-PCA-R MSM on CASIA-C [14] (slow walk fs).
Yumi Iwashita (11261748)   +3 more
core   +1 more source

Principal component analysis and its generalizations for any type of sequence (PCA-Seq)

open access: yesВавиловский журнал генетики и селекции, 2020
In the 1940s, Karhunen and Loève proposed a method for processing a one-dimensional numeric time series by converting it into multidimensional by shifts. In fact, a one-dimensional number series was decomposed into several orthogonal time series.
V. M. Efimov   +2 more
doaj   +1 more source

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