Networkx在Java中的pagerank (Eclipse)

import java.util.HashMap;
import java.util.Map;

public class PageRank {
    public static void main(String[] args) {
        // 创建一个图形对象，表示网络
        Map<String, Double> network = new HashMap<>();
        network.put("A", 0.2);
        network.put("B", 0.3);
        network.put("C", 0.5);

        // 实现PageRank算法
        double dampingFactor = 0.85; // 阻尼因子
        int iterations = 10; // 迭代次数

        for (int i = 0; i < iterations; i++) {
            Map<String, Double> newNetwork = new HashMap<>();
            double totalRank = 0.0;

            for (String node : network.keySet()) {
                double rank = 0.0;

                for (String neighbor : network.keySet()) {
                    if (neighbor.equals(node)) {
                        continue;
                    }

                    // 计算节点的PageRank值
                    rank += dampingFactor * (network.get(neighbor) / getOutDegree(neighbor));
                }

                newNetwork.put(node, rank);
                totalRank += rank;
            }

            // 更新节点的PageRank值
            for (String node : newNetwork.keySet()) {
                newNetwork.put(node, newNetwork.get(node) + (1 - totalRank) / network.size());
            }

            network = newNetwork;
        }

        // 输出每个节点的PageRank值
        for (String node : network.keySet()) {
            System.out.println("Node " + node + ": " + network.get(node));
        }
    }

    private static int getOutDegree(String node) {
        // 返回节点的出度（指向其他节点的边的数量）
        // 实现根据网络结构获取节点出度的逻辑
        return 1;
    }
}