เมตริกความคล้ายคลึงของผู้ใช้

def user_similarity(G, user1, user2, proj_nodes):
    # Check that the nodes belong to the 'users' partition
    ____ G.nodes[____]['bipartite'] == '____'
    ____ G.nodes[____]['bipartite'] == '____'

    # Get the set of nodes shared between the two users
    shared_nodes = ____

    # Return the fraction of nodes in the projects partition
    return len(____) / len(____)

# Compute the similarity score between users 'u4560' and 'u1880'
project_nodes = ____
similarity_score = ____

print(similarity_score)