C++ を使用して効率的なナレッジ グラフの構築と推論を行うにはどうすればよいですか?

class Node {
public:
    int id;
    std::string label;
    std::unordered_map<std::string, std::string> properties;
    std::unordered_map<std::string, std::vector<Edge>> edges;
};

class Edge {
public:
    int id;
    std::string type;
    std::unordered_map<std::string, std::string> properties;
    Node from;
    Node to;
};

class KnowledgeGraph {
public:
    std::unordered_map<int, Node> nodes;
    std::unordered_map<int, std::vector<Edge>> edges;
};

std::vector<Edge> findShortestPath(const KnowledgeGraph& graph, const Node& start, const Node& end) {
    std::unordered_map<int, bool> visited;
    std::queue<std::vector<Edge>> paths;
    paths.push({});

    while (!paths.empty()) {
        auto currentPath = paths.front();
        paths.pop();
        
        auto currentNode = currentPath.empty() ? start : currentPath.back().to;
        visited[currentNode.id] = true;

        if (currentNode.id == end.id) {
            return currentPath;
        }

        for (const auto& edge : graph.edges[currentNode.id]) {
            if (!visited[edge.to.id]) {
                auto newPath = currentPath;
                newPath.push_back(edge);
                paths.push(newPath);
            }
        }
    }

    return {};
}

int main() {
    KnowledgeGraph graph;

    Node node1{1, "Person", {{"name", "Alice"}}};
    Node node2{2, "Person", {{"name", "Bob"}}};
    Node node3{3, "Person", {{"name", "Charlie"}}};

    Edge edge1{1, "knows", {}, node1, node2};
    Edge edge2{2, "knows", {}, node2, node3};

    graph.nodes[node1.id] = node1;
    graph.nodes[node2.id] = node2;
    graph.nodes[node3.id] = node3;

    graph.edges[node1.id].push_back(edge1);
    graph.edges[node2.id].push_back(edge2);

    auto path = findShortestPath(graph, node1, node3);

    for (const auto& edge : path) {
        std::cout << edge.from.properties.at("name") << " knows " << edge.to.properties.at("name") << std::endl;
    }

    return 0;
}