In the data broadcast, the visits probability of the data record is various, therefore the indextree may be built through visit probability.
在数据广播中,数据记录被访问的概率各不相同,因此可以通过访问概率建立索引树。
2
The structure of the indextree decides the average index number to be visited, but even regarding the same index structure, the average visit time is different if the broadcast sequence is different.