scalation.graphalytics

GraphGenerator2

object GraphGenerator2

The GraphGenerator2 object is used to build random graph with various characteristics.

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  10. def extractSubgraph(size: Int, g: Graph2): Graph2

    Extracts a subgraph of 'size' vertices from graph 'g' by performing a breadth-first search from a random vertex.

    Extracts a subgraph of 'size' vertices from graph 'g' by performing a breadth-first search from a random vertex.

    size

    the number of vertices to extract

    g

    the data graph to extract from

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  12. def genBFSQuery(size: Int, avDegree: Int, g: Graph2): Graph2

    Given a graph 'g', performs a breadth first search starting at a random vertex until the breadth first tree contains 'size' vertices.

    Given a graph 'g', performs a breadth first search starting at a random vertex until the breadth first tree contains 'size' vertices. At each junction, it chooses a random number of children to traverse, with that random number averaging to 'avDegree'.

    size

    the number of vertices to extract

    avDegree

    the average out degree

    g

    the data graph to extract from

  13. def genPowerLawGraph(size: Int, nLabels: Int, maxDegree: Int, distPow: Double): Graph2

    Generates a graph with power law degree distribution with exponent 'distPow' and uniformly distributed labels.

    Generates a graph with power law degree distribution with exponent 'distPow' and uniformly distributed labels.

    size

    the number of vertices

    nLabels

    the number of labels (distributed uniformly)

    maxDegree

    the maximum allowed degree for any vertex

    distPow

    the power/exponent

  14. def genPowerLawGraph_PowLabels(size: Int, nLabels: Int, maxDegree: Int, distPow: Double): Graph2

    Generates a graph with power law degree distribution with exponent 'distPow' and power law distributed labels.

    Generates a graph with power law degree distribution with exponent 'distPow' and power law distributed labels.

    size

    the number of vertices

    nLabels

    the number of labels (distributed according to power law)

    maxDegree

    the maximum allowed degree for any vertex

    distPow

    the power/exponent

  15. def genRandomConnectedGraph(size: Int, nLabels: Int, avDegree: Int): Graph2

    Generates a random connected graph by using genRandomGraph and checking whether it is connected.

    Generates a random connected graph by using genRandomGraph and checking whether it is connected.

    size

    the number of vertices to generate

    nLabels

    the number of labels (distributed uniformly)

    avDegree

    the average degree

  16. def genRandomGraph(size: Int, nLabels: Int, avDegree: Int): Graph2

    Generates a random graph with the specified size (number of vertices), average degree and labels evenly distributed across vertices from 0 to nLabels - 1.

    Generates a random graph with the specified size (number of vertices), average degree and labels evenly distributed across vertices from 0 to nLabels - 1. Not necessarily a connected graph.

    size

    the number of vertices to generate

    nLabels

    the number of labels (distributed uniformly)

    avDegree

    the average degree

  17. def genRandomGraph_PowLabels(size: Int, nLabels: Int, avDegree: Int): Graph2

    Generates a random graph with labels distributed based on a power law distribution (currently with the magic number 2.

    Generates a random graph with labels distributed based on a power law distribution (currently with the magic number 2.1 for the power law exponent).

    size

    the number of vertices to generate

    nLabels

    the number of labels (distributed according to power law)

    avDegree

    the average degree

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