Package com.jgalgo
Interface CoreAlgo
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public interface CoreAlgo
Cores computing algorithm.Given a graph \(G=(V,E)\), a subgraph \(H\) induced by a subset of vertices \(W\) is a \(k\)-core or a core of order \(k\) if \(\forall v \in W : deg_H(v) \geq k\) and \(H\) is a maximum subgraph with this property. The core number of vertex is the highest order of a core that contains this vertex. The degree \(deg(v)\) can be: in-degree, out-degree, in-degree + out-degree, determining different types of cores.
- Author:
- Barak Ugav
- See Also:
CoreAlgo.DegreeType
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Nested Class Summary
Nested Classes Modifier and Type Interface Description static interface
CoreAlgo.Builder
A builder forCoreAlgo
objects.static class
CoreAlgo.DegreeType
The degree type the cores are defined with respect to.static interface
CoreAlgo.Result
The result of the cores computation.
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Method Summary
All Methods Static Methods Instance Methods Abstract Methods Default Methods Modifier and Type Method Description default CoreAlgo.Result
computeCores(Graph g)
Compute the cores of the graph with respect to both in and out degree of the vertices.CoreAlgo.Result
computeCores(Graph g, CoreAlgo.DegreeType degreeType)
Compute the cores of the graph with respect the given degree type.static CoreAlgo.Builder
newBuilder()
Create a new builder for core algorithms.
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Method Detail
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computeCores
default CoreAlgo.Result computeCores(Graph g)
Compute the cores of the graph with respect to both in and out degree of the vertices.For a detail description of the cores definition, see the interface documentation
CoreAlgo
.- Parameters:
g
- a graph- Returns:
- the cores of the graph
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computeCores
CoreAlgo.Result computeCores(Graph g, CoreAlgo.DegreeType degreeType)
Compute the cores of the graph with respect the given degree type.Cores are defined with respect to either the out edges, in edges, or both. For undirected graphs the degree type is ignored.
For a detail description of the cores definition, see the interface documentation
CoreAlgo
.- Parameters:
g
- a graphdegreeType
- the degree type the cores are computed with respect to- Returns:
- the cores of the graph
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newBuilder
static CoreAlgo.Builder newBuilder()
Create a new builder for core algorithms.- Returns:
- a new builder for core algorithms
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