Results 1 to 10 of about 1,503 (160)

Blind PARAFAC Signal Detection for Polarization Sensitive Array [PDF]

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
This paper links the polarization-sensitive-array signal detection problem to the parallel factor (PARAFAC) model, which is an analysis tool rooted in psychometrics and chemometrics.
Dazhuan Xu, Xiaofei Zhang
doaj   +3 more sources

Application of Parallel Factor Analysis (PARAFAC) to Electrophysiological Data [PDF]

open access: yesFrontiers in Neuroinformatics, 2015
The identification of important features in multi-electrode recordings requires the decomposition of data in order to disclose relevant features and to offer a clear graphical representation. This can be a demanding task.
Sarah Katharina eSchmitz   +9 more
doaj   +3 more sources

parafac4microbiome: exploratory analysis of longitudinal microbiome data using parallel factor analysis [PDF]

open access: yesmSystems
Studies investigating microbial temporal dynamics are increasingly common, leveraging longitudinal designs that collect microbial abundance data across multiple time points from the same subjects.
G. R. van der Ploeg   +3 more
doaj   +2 more sources

Tracking seasonal changes of natural organic matter in a water treatment plant in Bangkok using EEM-PARAFAC approach [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2021
This study aims to evaluate spatial and seasonal changes in natural organic matter (NOM) in Bangkhen Water Treatment Plant, Thailand. Water samples were analyzed for UV absorbance at 254 nm (UV254), dissolved organic carbon (DOC), and fluorescence ...
Kitiyot Tungsudjawong   +2 more
doaj   +1 more source

Application of PARAFAC Technique to Compare Fluorescence Property of Different Dissolved Organic Matters [PDF]

open access: yes대한환경공학회지, 2023
Objectives It provides a detailed procedure for analyzing dissolved organic matter (DOM) by the PARAFAC technique and aims to identify compare different fluorescent components of DOM with various water sources.
Dokyeong Lim, Mi-Jin Choi, Jongkwan Park
doaj   +1 more source

Revealing the Inner Changes of Component Composition Derived from DOM PARAFAC Based on Two-Dimensional Correlation Spectroscopy

open access: yesMolecules, 2022
Plenty of humic acid components compositions are contained in dissolved organic matter (DOM) derived from composting. Fluorescence signals were employed to characterize the changes in DOM components in the component process.
Hongyang Cui   +4 more
doaj   +1 more source

Multi-Sensor Fusion by CWT-PARAFAC-IPSO-SVM for Intelligent Mechanical Fault Diagnosis

open access: yesSensors, 2022
A new method of multi-sensor signal analysis for fault diagnosis of centrifugal pump based on parallel factor analysis (PARAFAC) and support vector machine (SVM) is proposed. The single-channel vibration signal is analyzed by Continuous Wavelet Transform
Hanxin Chen, Shaoyi Li
doaj   +1 more source

Overview of constrained PARAFAC models [PDF]

open access: yesEURASIP Journal on Advances in Signal Processing, 2014
In this paper, we present an overview of constrained PARAFAC models where the constraints model linear dependencies among columns of the factor matrices of the tensor decomposition, or alternatively, the pattern of interactions between different modes of the tensor which are captured by the equivalent core tensor.
Favier, Gérard, de Almeida, André
openaire   +3 more sources

Factor Uniqueness of the Structural Parafac Model [PDF]

open access: yesPsychometrika, 2020
Factor analysis is a well-known method for describing the covariance structure among a set of manifest variables through a limited number of unobserved factors. When the observed variables are collected at various occasions on the same statistical units, the data have a three-way structure and standard factor analysis may fail.
Giordani P., Rocci R., Bove G.
openaire   +5 more sources

Distribution, spectral characteristics, and seasonal variation of dissolved organic matter in the northern Beibu Gulf, South China Sea

open access: yesFrontiers in Marine Science, 2022
Dissolved organic matter (DOM) in the land–ocean interface plays a critical role in the global carbon cycle, yet its dynamic is not well understood. Dissolved organic carbon (DOC) in the northern Beibu Gulf was measured seasonally from April 2020 to ...
Zuhao Zhu   +15 more
doaj   +1 more source

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