Biblio
"Fast Frequent Free Tree Mining in Graph Databases", ICDM Workshops, pp. 315-319, 2006.
, "Graph Indexing: Tree + Delta $>$= Graph", VLDB, pp. 938-949, 2007.
, "Mining Closed Frequent Free Trees in Graph Databases", DASFAA, pp. 91-102, 2007.
, "Fast Frequent Free Tree Mining in Graph Databases", World Wide Web, vol. 11, no. 1, pp. 71-92, 2008.
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