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Polarized Communities Search via Co-guided Random Walk in Attributed Signed Networks
2023
ACM Transactions on Internet Technology
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To address the above challenges, we propose a novel method Co-guided Random Walk in Attributed signed networks (CoRWA) for polarized communities search by equipping with reasonable attribute setting. ...
As to the second challenge, a co-guided random walk scheme in two signed networks is designed to explicitly model the relations between topology-based signed network and attribute-based signed network ...
Internet Technol.Polarized Communities Search via Co-guided Random Walk in Atributed Signed Networks • 5 ...
doi:10.1145/3613449
fatcat:cvyd5u6n3jfnxckaa73dwwu3bq
Network polarization, filter bubbles, and echo chambers: An annotated review of measures and reduction methods
[article]
2022
arXiv
pre-print
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Several approaches for measuring polarization in graphs and networks were identified, including those based on homophily, modularity, random walks, and balance theory. ...
Polarization arises when the underlying network connecting the members of a community or society becomes characterized by highly connected groups with weak inter-group connectivity. ...
Then, POLE (POLarized Embedding for signed networks), a signed embedding method for polarized graphs based on random-walk based measure is proposed. ...
arXiv:2207.13799v3
fatcat:so23g5prknc5rbnlfap25psjqa
A novel radio source search algorithm using force field vectors and received signal strengths
2013
International Journal of Mechatronics and Automation
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Furthermore, the travel costs of FFS and the gradient ascent with correlated random walks (GACRW) algorithm are derived as functions of the searching space size, the local basin size and the local basin ...
Virtual attraction forces weighted by RSS gradients are modelled to guide the robot to the radio source. ...
By actively switching the behaviour between levy walk (Viswanathan et al., 2008) and biased random walk, the levy walk guided random walk is more efficient than chemotaxis in source finding. ...
doi:10.1504/ijma.2013.052612
fatcat:jt4lyg4jarearftthh2e2erhwe
Optical cavity implementations of the quantum walk
2003
Optics Communications
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We discuss how the coined quantum walk on the line or on the circle can be implemented using optical waves. We propose several optical cavity configurations for these implementations. ...
Javier García (Universitat de València, Spain) for his careful reading of the manuscript. ...
., random changes in the polarization or direction of the light beams. Figure 1 : 1 Probability distribution for n = 200 for both the classical random walk (dashed) and quantum walk (continuous). ...
doi:10.1016/j.optcom.2003.09.024
fatcat:tgtc6jidczgl7o7pn34rrhx6tq
Normal and Tumoral Melanocytes Exhibit q-Gaussian Random Search Patterns
2014
PLoS ONE
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Finally, a q-Gaussian random walk model was proposed to account for these melanocytic migratory traits. ...
This major finding indicates that amongst those animal cells supposedly migrating through Lévy walks, some of them can instead perform q-Gaussian walks. ...
Also, such a crossover has a biologically appealing insight as ballistic walks can optimize random searches. ...
doi:10.1371/journal.pone.0104253
pmid:25203532
pmcid:PMC4159146
fatcat:v555v6uiyzgtdcul3gsaysflqu
PROPAGATION MEASUREMENTS AND MODELLING OF NATURAL TROPICAL CAVES
2022
Progress In Electromagnetics Research M
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Path loss exponents are derived from measurement data for line-of-sight (LoS) and non-line-of-sight (NLoS) sections for vertical-vertical (VV) and horizontal-horizontal (HH) polarizations. ...
The findings of this work lay a good foundation towards a greater understanding of the propagation scenarios in natural tourist caves, and they help towards establishing reliable wireless communications ...
Path loss exponent values are computed for the co-polarizations -VV and HH alike for all three caves at the three frequencies. ...
doi:10.2528/pierm22061402
fatcat:mpjmdvbvgfckvhmt5mwqxmj7ma
Using random walks to identify cancer-associated modules in expression data
2013
BioData Mining
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Results: We implement Walktrap, a random-walk-based community detection algorithm, to identify biological modules predisposing to tumor growth in 22 hepatocellular carcinoma samples (GSE14520), adenoma ...
Using a graph-based approach to search for communities of phenotype-related genes in microarray data, we find modules of genes associated with cancer phenotypes in a weighted interaction network. ...
Acknowledgments We would like to thank Ira Kalet and Alexander Tsiatas for their helpful input and advice. We received funding for this research from NLM grant 5T15LM007442-07. ...
doi:10.1186/1756-0381-6-17
pmid:24128261
pmcid:PMC4015830
fatcat:gq4m2glcvfb6xfp5iirmk2yc3e
A Neurocomputational Model of Goal-Directed Navigation in Insect-Inspired Artificial Agents
2017
Frontiers in Neurorobotics
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and communities) under grant agreement no. 732266 (Plan4Act). ...
FUNDING This research was supported by Centre for BioRobotics (CBR) at University of Southern Denmark (SDU, Denmark). DG was supported by the Fundação para a Ciência e Tecnologia (FCT). ...
We model the random search by the agent as a correlated Gaussian random walk, which has been previously used to study animal foraging (Bovet and Benhamou, 1988) . ...
doi:10.3389/fnbot.2017.00020
pmid:28446872
pmcid:PMC5388780
fatcat:3v3y4vqkqzalbkxg2cblmfwyh4
Intravascular Crawling of Patrolling Monocytes: A Lèvy-Like Motility for Unique Search Functions?
2021
Frontiers in Immunology
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We propose that the search mode governs the intravascular motility of PMo in vivo in a similar way to T cells looking for antigen in tissues. ...
Patrolling monocytes (PMo) are the organism's preeminent intravascular guardians by their continuous search of damaged endothelial cells and harmful microparticles for their removal and to restore homeostasis ...
RM-C has a contract with the Community of Madrid co-financed by the European Social Fund for Youth Employment. ...
doi:10.3389/fimmu.2021.730835
pmid:34603307
pmcid:PMC8485030
fatcat:seov2msbind27kzzrdgl2wjnli
Quaternion‐based improved cuckoo algorithm for colour UAV image edge detection
2021
IET Image Processing
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Accordingly, the colour image edge points can be determined based on the quaternion polar coordinating the rotation principle. ...
In particular, a novel guiding equation is used to optimize the positions of the improved cuckoo algorithm before the Levi flight. ...
For example, the search mechanism of cuckoo algorithm mainly includes global random walk and local random walk, and the optimization process of the algorithm mainly relies on the random direction generated ...
doi:10.1049/ipr2.12398
fatcat:xotpwio22nfjjhc7eddecrwdya
Agent-Based Model of Human Alveoli Predicts Chemotactic Signaling by Epithelial Cells during Early Aspergillus fumigatus Infection
2014
PLoS ONE
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We tested for random and chemotactic migration modes of alveolar macrophages and varied their corresponding parameter sets. ...
We implemented a spatio-temporal agent-based model of a human alveolus in order to perform in silico experiments of a virtual infection scenario, for an alveolus infected with A. fumigatus under physiological ...
Second, the search for the conidium on the respective AEC obeys a persistent random walk and is associated with the time duration t rand . ...
doi:10.1371/journal.pone.0111630
pmid:25360787
pmcid:PMC4216106
fatcat:h3ozjhyzznenjorm2l2il2nqwq
Walking Goal Line Detection Based on DM6437 on Harvesting Robot
[chapter]
2012
IFIP Advances in Information and Communication Technology
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harvesting robot, there is the large amount of image data processing, meanwhile, harvesting robot requires real-time image processing and to calculate the linear parameters in a straight line detection of the walking ...
After multiple images processing, tests show that this detection method can detect real-time parameters of harvesting robot's walking goal line, and the algorithm is well proved with respect to its speed ...
Visual navigation of agricultural autonomous walking robot, usually divides into two kinds: wireless guide and wired guide. ...
doi:10.1007/978-3-642-27275-2_40
fatcat:3bjna5maivcajldj5thuorum7q
Location of Logistics Distribution Center Based on Improved Bald Eagle Algorithm
2022
Sustainability
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This paper proposes an improved bald eagle search applied to logistics distribution center location selection for the first time, one which uses the chaotic operator to initialize the population, increases ...
the diversity of populations, and introduces a sine and cosine algorithm in the search stage. ...
Its mathematical model can be represented by the following polar coordinate equation: θ(i) = a•π•rand (2) r(i) = θ(i) + R•rand (3) xr(i) = r(i)•sin(θ(i)) (4) yr(i) = r(i)•cos(θ(i)) (5) x(i) = xr(i) max ...
doi:10.3390/su14159036
fatcat:idavkl2dlfanha54np65hqyenm
Principles of efficient chemotactic pursuit
[article]
2019
arXiv
pre-print
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In chemotaxis, cells are modulating their migration patterns in response to concentration gradients of a guiding substance. ...
Some of our results may also be useful for the design of chemotaxis experiments and for the development of algorithms that automatically detect and quantify goal oriented behavior in measured immune cell ...
ACKNOWLEDGEMENTS We thank Christoph Mark and Franziska Hoersch for many helpful discussions, and for sharing preliminary experimental results on the interaction between natural killer cells and tumor cells ...
arXiv:1902.10589v1
fatcat:czl3ugt3ljgvxiioojfd5f5ogm
Search for the PN coefficients for the Energy flux through Gravitational Waves from Black-Hole Binaries using Markov Chain Monte Carlo
[article]
2012
arXiv
pre-print
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Stochastic search techniques like the Markov Chain Monte Carlo (MCMC) have been used extensively for searching for sky parameters etc. ...
Also the space for higher dimensional searches are explored. ...
All the chains set out, with different initial heats, and different initial values, ended up in random walk
Figure 5 .Figure 5 . 55 11 : Chain searching for a 11 (and b 11 ), eventually random-walking ...
arXiv:1206.0915v1
fatcat:rdn2gsi2fnb6vdd3nberyervha
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