Results 41 to 50 of about 608,403 (284)

Connected Components in MapReduce and Beyond [PDF]

open access: yesProceedings of the ACM Symposium on Cloud Computing, 2014
Computing connected components of a graph lies at the core of many data mining algorithms, and is a fundamental subroutine in graph clustering. This problem is well studied, yet many of the algorithms with good theoretical guarantees perform poorly in practice, especially when faced with graphs with hundreds of billions of edges.
Raimondas Kiveris   +4 more
openaire   +1 more source

Component Order Edge Connectivity, Vertex Degrees, and Integer Partitions

open access: yesTheory and Applications of Graphs
Given a finite, simple graph G, the k-component order connectivity (resp. edge connectivity) of G is the minimum number of vertices (resp. edges) whose removal results in a subgraph in which every component has an order of at most k − 1.
Michael R. Yatauro
doaj   +1 more source

Electroencephalography (EEG)-Derived Markers to Measure Components of Attention Processing [PDF]

open access: yes, 2017
Although extensively studied for decades, attention system remains an interesting challenge in neuroscience field. The Attention Network Task (ANT) has been developed to provide a measure of the efficiency for the three attention components ...
Anzolin, Alessandra   +6 more
core   +1 more source

Temporally connected components

open access: yesTheoretical Computer Science
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Stefan Balev   +2 more
openaire   +3 more sources

Connected Components Labeling on DRAGs [PDF]

open access: yes2018 24th International Conference on Pattern Recognition (ICPR), 2018
In this paper we introduce a new Connected Components Labeling (CCL) algorithm which exploits a novel approach to model decision problems as Directed Acyclic Graphs with a root, which will be called Directed Rooted Acyclic Graphs (DRAGs). This structure supports the use of sets of equivalent actions, as required by CCL, and optimally leverages these ...
Bolelli, Federico   +3 more
openaire   +2 more sources

Dynamics of random recurrent networks with correlated low-rank structure

open access: yesPhysical Review Research, 2020
A given neural network in the brain is involved in many different tasks. This implies that, when considering a specific task, the network's connectivity contains a component which is related to the task and another component which can be considered ...
Friedrich Schuessler   +4 more
doaj   +1 more source

Estimating Time-Varying Effective Connectivity in High-Dimensional fMRI Data Using Regime-Switching Factor Models

open access: yes, 2017
Recent studies on analyzing dynamic brain connectivity rely on sliding-window analysis or time-varying coefficient models which are unable to capture both smooth and abrupt changes simultaneously. Emerging evidence suggests state-related changes in brain
Ombao, Hernando   +3 more
core   +1 more source

Self-stabilizing Connected Components

open access: yes2019 IEEE/ACM 9th Workshop on Fault Tolerance for HPC at eXtreme Scale (FTXS), 2019
For the problem of computing the connected components of a graph, this paper considers the design of algorithms that are resilient to transient hardware faults, like bit flips. More specifically, it applies the technique of \emph{self-stabilization}. A system is self-stabilizing if, when starting from a valid or invalid state, it is guaranteed to reach
Piyush Sao   +4 more
openaire   +2 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Functional brain networks in schizophrenia: a review

open access: yesFrontiers in Human Neuroscience, 2009
Functional magnetic resonance imaging (fMRI) has become a major technique for studying cognitive function and its disruption in mental illness, including schizophrenia.
Vince D Calhoun   +6 more
doaj   +1 more source

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