1.2 Meaningful self-integral trees
Each XML document can be divided into different
meaningful subtrees, 1.2 Meaningful self-integral trees
Each XML document can be divided into different
meaningful subtrees, where each subtree represents an
integrated meaning but different subtrees have few
interrelationships. For example, in Fig. 1, the XML
document can be divided into three subtrees as circled
by the dotted lines. Three subtrees have different inte-
grated meanings. Then, for a keyword query, if any of
these three subtrees contains all the keywords, that
subtree should be a result. where each subtree represents an
integrated meaning but different subtrees have few
interrelationships. For example, in Fig. 1, the XML
document can be divided into three subtrees as circled
by the dotted lines. Three subtrees have different inte-
grated meanings. Then, for a keyword query, if any of
these three subtrees contains all the keywords, that
subtree should be a result.