Results 21 to 30 of about 274,981 (281)

Robust structure low-rank representation in latent space [PDF]

open access: yes, 2019
Subspace clustering algorithms are usually used when processing high-dimensional data, such as in computer vision. This paper presents a robust low-rank representation (LRR) method that incorporates structure constraints and dimensionality reduction for ...
Palade, Vasile   +2 more
core   +1 more source

Carrier Frequency Offset Estimation in OFDM systems as a Quadratic Eigenvalue Problem [PDF]

open access: yesRadioengineering, 2017
Carrier frequency offset (CFO) in orthogonal frequency division multiplexing (OFDM) systems is a major problem in achieving orthogonality between subcarriers. In this paper, we propose an estimator for CFO in OFDM systems using the subspace method.
A. Eslahi, A. Mahmoudi, H. Kaabi
doaj  

An Efficient Framework for Estimating the Direction of Multiple Sound Sources Using Higher-Order Generalized Singular Value Decomposition

open access: yesSensors, 2019
This paper presents an efficient framework for estimating the direction-of-arrival (DOA) of wideband sound sources. The proposed framework provides an efficient way to construct a wideband cross-correlation matrix from multiple narrowband cross ...
Bandhit Suksiri, Masahiro Fukumoto
doaj   +1 more source

A Tolerant Detection Method for Estimating Robust Signal Subspace with Horizontal Arrays in Uncertain Shallow Ocean Environment

open access: yesXibei Gongye Daxue Xuebao, 2020
The environmental parameters are usually uncertain in complex shallow ocean environment and restrict the performance of the matching model-like method. Therefore, we need a more tolerant detection method for detecting underwater targets in the uncertain ...

doaj   +1 more source

Kron’s method of subspaces [PDF]

open access: yesQuarterly of Applied Mathematics, 1944
Not ...
openaire   +1 more source

Multiple Kernel Subspace Clustering Based on Consensus Hilbert Space and Second-Order Neighbors

open access: yesIEEE Access, 2020
How to deal with data sets in high-dimensional space is the focus of image processing. At present, subspace clustering method is one of the most commonly used methods for processing high-dimensional data sets. Traditional subspace clustering assumes that
Zhongyuan Wang, Jinglei Liu
doaj   +1 more source

Extended Averaged Learning Subspace Method for Hyperspectral Data Classification

open access: yesSensors, 2009
Averaged learning subspace methods (ALSM) have the advantage of being easily implemented and appear to outperform in classification problems of hyperspectral images.
Yoshifumi Yasuoka   +4 more
doaj   +1 more source

Application of Subspace-Based Detection Algorithm to Infrasound Signals in Volcanic Areas

open access: yesFrontiers in Earth Science, 2021
Infrasonic signals investigation plays a fundamental role for both volcano monitoring purpose and the study of the explosion dynamics. Proper and reliable detection of weak signals is a critical issue in active volcano monitoring.
Mariangela Sciotto, Placido Montalto
doaj   +1 more source

Counting Process Based Dimension Reduction Methods for Censored Outcomes [PDF]

open access: yes, 2018
We propose a class of dimension reduction methods for right censored survival data using a counting process representation of the failure process. Semiparametric estimating equations are constructed to estimate the dimension reduction subspace for the ...
Sun, Qiang   +3 more
core   +3 more sources

Optimized Method Based on Subspace Merging for Spectral Reflectance Recovery

open access: yesSensors, 2023
The similarity between samples is an important factor for spectral reflectance recovery. The current way of selecting samples after dividing dataset does not take subspace merging into account.
Yifan Xiong, Guangyuan Wu, Xiaozhou Li
doaj   +1 more source

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