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How to measure connectivity using Tarjan's algorithm in Apache Age to measure connectivity(如何在阿帕奇时代使用塔詹算法来测量连通性)

转载 作者：bug小助手 更新时间：2023-10-28 10:21:18 27 4
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I have been trying to implement Tarjan's algorithm to measure strongly connected components in a graph Can anyone provide guidance on how to implement Tarjan's algorithm in Apache-Age to measure connectivity between nodes since I could not find anything yet?
Here is the code in python

我一直在尝试实现塔詹的算法来测量图中的强连通分量。既然我还没有找到任何东西，谁能提供指导，说明如何在阿帕奇时代实现塔詹的算法来测量节点之间的连通性？以下是用python编写的代码


index = 0
stack = []
ids = {}
lowlink = {}
onStack = {}
result = []

def tarjan(current_node):
    global index
    ids[current_node] = index
    lowlink[current_node] = index
    index += 1
    stack.append(current_node)
    onStack[current_node] = True

    for neighbor in current_node.get_neighbors():
        if neighbor not in ids:
            tarjan(neighbor)
            lowlink[current_node] = min(lowlink[current_node], lowlink[neighbor])
        elif onStack[neighbor]:
            lowlink[current_node] = min(lowlink[current_node], ids[neighbor])

    if ids[current_node] == lowlink[current_node]:
        connected_component = []
        while True:
            neighbor = stack.pop()
            onStack[neighbor] = False
            connected_component.append(neighbor)
            if neighbor == current_node:
                break
        result.append(connected_component)


how to I implement this code using apache age to measure connectivity?

如何使用Apacheage来衡量连接性来实现这段代码？


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优秀答案推荐

Try following these steps

请尝试执行以下步骤



  • Use a PostgreSQL database connector in python to connect to the
    database running AGE.

  • Use a Cypher query to retrieve the graph to analyze. The query should
    return the nodes and relationships in the graph.

  • Use the results of the Cypher query to build an in-memory
    representation of the graph that you can use as the input to your
    implementation of Tarjan's algorithm. You might represent the
    graph as an adjacency list or adjacency matrix, depending on
    what's most convenient for your implementation of the algorithm.

  • Run your implementation of Tarjan's algorithm.



You can follow the following steps to measure the connectivity using tarjan's algorithm:

您可以按照以下步骤使用Tarjan的算法测量连接性：



  • First, create a graph in AGE using TinkerPop API.

  • Now make your tarjan's algorithm in python to use the TinkerPop API for graph traversing.

  • After this, you can use tarjan's algorithm to find the strongly connected components.



You can use the following steps to implement the Tarjan's algorithm for accurately taking measurements for strongly connected components when using Apache AGE:

您可以使用以下步骤来实现Tarjan算法，以便在使用APACHE AGE时准确测量强连接组件：



  1. Ensure that Apache AGE is installed and Apache Cassandra is also up and running with it alongside.

  2. Instantiate a graph schema and upload the relevant tada into the graph.

  3. The python code that is generated will be translated into AGE query language.


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