Discovering Frequent Subgraphs over Uncertain Graph Databases under Probabilistic Semantics

author: Zhaonian Zou, Harbin Institute of Technology
published: Oct. 1, 2010,   recorded: July 2010,   views: 3894


Related Open Educational Resources

Related content

Report a problem or upload files

If you have found a problem with this lecture or would like to send us extra material, articles, exercises, etc., please use our ticket system to describe your request and upload the data.
Enter your e-mail into the 'Cc' field, and we will keep you updated with your request's status.
Lecture popularity: You need to login to cast your vote.


Frequent subgraph mining has been extensively studied on certain graph data. However, uncertainties are inherently accompanied with graph data in practice, and there is very few work on mining uncertain graph data. This paper investigates frequent subgraph mining on uncertain graphs under probabilistic semantics. Specifically, a measure called varphi-frequent probability is introduced to evaluate the degree of recurrence of subgraphs. Given a set of uncertain graphs and two numbers 0 varphi,tau < 1, the goal is to quickly find all subgraphs with varphi-frequent probability at least tau. Due to the NP-hardness of the problem, an approximate mining algorithm is proposed for this problem. Let 0 < delta < 1 be a parameter. The algorithm guarantees to find any frequent subgraph S with probability at least \left(\frac{1 - \delta}{2}\right)s, where s is the number of edges of S. In addition, it is thoroughly discussed how to set $\delta$ to guarantee the overall approximation quality of the algorithm. The extensive experiments on real uncertain graph data verify that the algorithm is efficient and that the mining results have very high quality.

See Also:

Download slides icon Download slides: kdd2010_zou_dfs_01.ppt (2.5┬áMB)

Help icon Streaming Video Help

Link this page

Would you like to put a link to this lecture on your homepage?
Go ahead! Copy the HTML snippet !

Write your own review or comment:

make sure you have javascript enabled or clear this field: