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Given a stream in which edges are inserted and deleted to/from an unweighted, undirected graph, how well can we count triangles and other sub-graphs? Most of the previous work has focused on the case of insertions {{cite|BarYossefKS-02|JowhariG-05|BuriolFLMS-06}} although it appears that one of the algorithms in {{cite|JowhariG-05}} may work when edges can be deleted. Is it possible to match the insert-only bounds when edges are inserted and deleted?
 
Given a stream in which edges are inserted and deleted to/from an unweighted, undirected graph, how well can we count triangles and other sub-graphs? Most of the previous work has focused on the case of insertions {{cite|BarYossefKS-02|JowhariG-05|BuriolFLMS-06}} although it appears that one of the algorithms in {{cite|JowhariG-05}} may work when edges can be deleted. Is it possible to match the insert-only bounds when edges are inserted and deleted?
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== Update ==
 
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Ahn, Guha, and McGregor {{cite|AhnGM-12b}} proposed an algorithm for streams with both insertions and deletions. It matches the best known bounds for insertion-only streaming algorithms {{cite|BuriolFLMS-06}}.
 

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