中文说明：赌轮法生成BA网络，可以选择三种初始网络的连接方式，分别孤立节点，全连接和随机连接三种模式。一般选择全连接的方式，分别计算每个节点的度和累积度分布，与随机值比较，即可得出是否有对应的边连接。
English Description：
In order to generate BA network with roulette wheel method, three connection modes of initial network can be selected, namely isolated node, full connection and random connection. Generally, the full connection mode is selected, and the degree and cumulative degree distribution of each node are calculated respectively. Compared with the random value, the corresponding edge connection can be obtained.