Articles with "adjacency" as a keyword



The effect on the adjacency and signless Laplacian spectral radii of uniform hypergraphs by grafting edges

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Published in 2021 at "Linear Algebra and its Applications"

DOI: 10.1016/j.laa.2020.10.011

Abstract: Abstract In this paper, we investigate how the adjacency spectral radius and signless Laplacian spectral radius behave when a connected uniform hypergraph is perturbed by grafting edges. We extend the classical theorem of Li and… read more here.

Keywords: signless laplacian; laplacian spectral; adjacency; spectral radii ... See more keywords

Removing segmentation inconsistencies with semi-supervised non-adjacency constraint

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Published in 2019 at "Medical image analysis"

DOI: 10.1016/j.media.2019.101551

Abstract: The advent of deep learning has pushed medical image analysis to new levels, rapidly replacing more traditional machine learning and computer vision pipelines. However segmenting and labelling anatomical regions remains challenging owing to appearance variations,… read more here.

Keywords: adjacency; semi supervised; segmentation inconsistencies; training ... See more keywords

Dynamic Adjacency Matrix Learning and Multi-Order Random Walk Aggregation for Alzheimer’s Disease Diagnosis From Resting-State fMRI

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Published in 2025 at "IEEE Access"

DOI: 10.1109/access.2025.3587286

Abstract: Alzheimer’s disease (AD) is a progressive, irreversible neurodegenerative disorder, and early diagnosis is critical for timely intervention and slowing down the course of the disease. Functional magnetic resonance imaging (fMRI), a non-invasive neuroimaging technique, can… read more here.

Keywords: adjacency; alzheimer disease; disease; diagnosis ... See more keywords

An Adjacency-Effect-Based Approach for Accuracy Improvement in Satellite Land Surface Temperature Disaggregation

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Published in 2024 at "IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing"

DOI: 10.1109/jstars.2023.3325920

Abstract: One of the key parameters that affects the accuracy of land surface temperature (LST) disaggregation is the environmental variables that are fed to the disaggregation model. The aim of this article is to present a… read more here.

Keywords: adjacency; disaggregation; land surface; environmental variables ... See more keywords

Dual Graph Convolutional Network for Hyperspectral Images With Spatial Graph and Spectral Multigraph

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Published in 2024 at "IEEE Geoscience and Remote Sensing Letters"

DOI: 10.1109/lgrs.2024.3398439

Abstract: To accurately represent the graph structure of the pixel nodes in the hyperspectral remote sensing image classification based on graph convolutional networks (GCNs), a spectral multigraph adjacency matrix is presented by the weighted fusion of… read more here.

Keywords: adjacency; graph convolutional; spectral multigraph; multigraph ... See more keywords

Arc Adjacency Matrix-Based Fast Ellipse Detection

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Published in 2020 at "IEEE Transactions on Image Processing"

DOI: 10.1109/tip.2020.2967601

Abstract: Fast and accurate ellipse detection is critical in certain computer vision tasks. In this paper, we propose an arc adjacency matrix-based ellipse detection (AAMED) method to fulfill this requirement. At first, after segmenting the edges… read more here.

Keywords: matrix based; adjacency matrix; arc adjacency; adjacency ... See more keywords

Multiview Spectral Clustering With Bipartite Graph

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Published in 2022 at "IEEE Transactions on Image Processing"

DOI: 10.1109/tip.2022.3171411

Abstract: Multi-view spectral clustering has become appealing due to its good performance in capturing the correlations among all views. However, on one hand, many existing methods usually require a quadratic or cubic complexity for graph construction… read more here.

Keywords: bipartite graph; graph; complementary information; spectral clustering ... See more keywords

Multisite Harmonization of Structural DTI Networks in Children: An A-CAP Study

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Published in 2022 at "Frontiers in Neurology"

DOI: 10.3389/fneur.2022.850642

Abstract: The analysis of large, multisite neuroimaging datasets provides a promising means for robust characterization of brain networks that can reduce false positives and improve reproducibility. However, the use of different MRI scanners introduces variability to… read more here.

Keywords: topology; network; harmonization; harmonization structural ... See more keywords

Fully Parallel Homological Region Adjacency Graph via Frontier Recognition

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Published in 2023 at "Algorithms"

DOI: 10.3390/a16060284

Abstract: Relating image contours and regions and their attributes according to connectivity based on incidence or adjacency is a crucial task in numerous applications in the fields of image processing, computer vision and pattern recognition. In… read more here.

Keywords: recognition; fully parallel; graph; adjacency ... See more keywords

On Spectral Characterization of Two Classes of Unicycle Graphs

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Published in 2022 at "Symmetry"

DOI: 10.3390/sym14061213

Abstract: Let G be a graph with n vertices, let A(G) be an adjacency matrix of G and let PA(G,λ) be the characteristic polynomial of A(G). The adjacency spectrum of G consists of eigenvalues of A(G).… read more here.

Keywords: spectral characterization; unicycle graphs; adjacency spectrum; graph ... See more keywords