Results 31 to 40 of about 9,700 (199)

Candecomp/Parafac: From Diverging Components to a Decomposition in Block Terms [PDF]

open access: yesSIAM Journal on Matrix Analysis and Applications, 2012
Fitting an R-component Candecomp/Parafac (CP) decomposition to a multiway array or higher-order tensor Z is equivalent to finding a best rank-R approximation of Z. Such a best rank-R approximation may not exist due to the fact that the set of multiway arrays with rank at most R is not closed. In this case, trying to compute the approximation results in
openaire   +2 more sources

Non-Gaussian Penalized PARAFAC Analysis for fMRI Data

open access: yesFrontiers in Applied Mathematics and Statistics, 2019
Independent Component Analysis (ICA) method has been used widely and successfully in functional magnetic resonance imaging (fMRI) data analysis for both single and group subjects. As an extension of the ICA, tensorial probabilistic ICA (TPICA) is used to
Jingsai Liang   +3 more
doaj   +1 more source

DECODING SSVEP RESPONSES BASED ON PARAFAC DECOMPOSITION [PDF]

open access: yesProceedings of the International Conference on Bio-inspired Systems and Signal Processing, 2012
In this position paper, we investigate whether a parallel factor analysis (Parafac) decomposition is beneficial to the decoding of steady-state visual evoked potentials (SSVEP) present in electroencephalogram (EEG) recordings taken from the subject’s scalp.
Manyakov, Nikolay V.   +5 more
openaire   +3 more sources

Identification of oil contamination in process water using fluorescence excitation emission matrix (FEEM) and parallel factor analysis (PARAFAC)

open access: yesWater Science and Technology
Fuel oil is widely used within Eskom, a power generation company in South Africa. Eskom's coal-fired power stations use up to 30,000 L of fuel oil per hour during a cold start-up, a consequence of which results in oil leaks to the dams. Oil contamination
Heena Madhav, Adam Gilmore
doaj   +1 more source

Co-PARAFAC: A Novel Cost-Efficient Scalable Tensor Decomposition Algorithm

open access: yesIEEE Access
This paper proposes a novel tensor decomposition method, cooperative parallel factor (Co-PARAFAC), that is devised to achieve higher accuracy with lower computational complexity and memory requirements than the conventional PARAFAC.
Farshad Shams   +2 more
doaj   +1 more source

Transmit Beamspace-Based Unitary Parallel Factor Method for DOD and DOA Estimation in Bistatic MIMO Radar

open access: yesIEEE Access, 2018
In this paper, a novel transmit beamspace (TB)-based unitary parallel factor (PARAFAC) algorithm is proposed for direction-of-departure (DOD) and direction-of-arrival estimation in bistatic multiple-input multiple-output (MIMO) radar.
Baoqing Xu, Yongbo Zhao
doaj   +1 more source

Tensor Decompositions for Signal Processing Applications From Two-way to Multiway Component Analysis [PDF]

open access: yes, 2014
The widespread use of multi-sensor technology and the emergence of big datasets has highlighted the limitations of standard flat-view matrix models and the necessity to move towards more versatile data analysis tools. We show that higher-order tensors (i.
Caiafa, C.   +6 more
core   +1 more source

Fast adaptive PARAFAC decomposition algorithm with linear complexity [PDF]

open access: yes2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2016
We present a fast adaptive PARAFAC decomposition algorithm with low computational complexity. The proposed algorithm generalizes the Orthonormal Projection Approximation Subspace Tracking (OPAST) approach for tracking a class of third-order tensors which have one dimension grow- ing with time.
Nguyen, Viet-Dung   +2 more
openaire   +3 more sources

From fresh to marine waters: characterization and fate of dissolved organic matter in the Lena River delta region, Siberia

open access: yesFrontiers in Marine Science, 2015
Connectivity between the terrestrial and marine environment in the Artic is changing as a result of climate change, influencing both freshwater budgets and the supply of carbon to the sea.
Rafael eGonçalves-Araujo   +9 more
doaj   +1 more source

Landscape Influence on the Browning of a Lake Watershed in the Adirondack Region of New York, USA

open access: yesSoil Systems, 2020
Watershed recovery from long-term acidification in the northeastern U.S. has been characterized by an increase in the influx of dissolved organic matter (DOM) into surface waters.
Nicholas A. LoRusso   +5 more
doaj   +1 more source

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