是否有这种类型的集合/列表“换位”的名称或更多信息？手术？
以下类型的设置/列表“转置”操作是否有名称？ （这里可能滥用一些正式术语，但这就是我问题的全部原因:)
我有以下包含集合的列表：
1 = {a,b,c}
2 = {a,b,d,e}
3 = {a,c,e}
然后我遍历该列表以制作以下内容，即集合中每次出现的项目的列表。您可以看到“a”位于 1、2 和 3 中，因此列出了这些，依此类推。
a = {1,2,3}
b = {1,2}
c = {1,3}
d = {2}
e = {2,3}
例如，如果我想将字母集相互比较，则以这种方式转换列表非常有用。
Is there a name for the following type of set/list "transposition" operation? (Probably abusing some formal terms here, but that's the whole reason for my question :)
I have the following list containing sets:
1 = {a,b,c}
2 = {a,b,d,e}
3 = {a,c,e}
I then go through the list to make the following, a list of each occurrence of the items that were in the sets. You can see that 'a' was in 1, 2, and 3, so those are listed, and so on.
a = {1,2,3}
b = {1,2}
c = {1,3}
d = {2}
e = {2,3}
Transforming the list in this way is useful if I want to for example, compare the lettered sets to each other.
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您所做的让人想起数据库中的倒排索引。因此，也许“反转”是一个合适的名称。
What you are doing is reminiscent of an inverted index in database-speak. So, perhaps "invert" would be an appropriate name for it.