图14
点击绿色按钮“go”，左下方区域显示已经开始计算。如图 15。
Click the green button "go", the lower left area shows that the calculation has started. As shown in Figure 15.
图15
运算结束后，会跳出一个新的窗口，点击“visualize”。如图 16。
After the calculation is over, a new window will pop up, click "visualize". As shown in Figure 16.
图16
然后我们可以看到运行的结果，点击暂停键。否则数据会持续运转，直到得到你满意的图形。如图 17。
Then we can see the result of the operation, click the pause button. Otherwise, the data will continue to run until you get the graph you are satisfied with. As shown in Figure 17.
图17
选择菜单栏的关键词聚类。如图 18。计算得到了已选择的500篇文献中的高频关键词。如图 19。
Select keyword clustering in the menu bar. As shown in Figure 18. The high-frequency keywords in the 500 selected documents are calculated. As shown in Figure 19.
