Advanced Applications and Structures in Xml Processing: by Changqing Li, Tok Wang Ling PDF

By Changqing Li, Tok Wang Ling

ISBN-10: 1615207279

ISBN-13: 9781615207275

Functions and buildings in XML Processing: Label Streams, Semantics usage and information question applied sciences displays the numerous study effects and newest findings of students' all over the world, operating to discover and extend the function of XML. This assortment represents an knowing of XML processing applied sciences in reference to either complex purposes and the most recent XML processing applied sciences that's of basic significance. It presents the chance to appreciate themes intimately and become aware of XML study at a finished point.

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Extra resources for Advanced Applications and Structures in Xml Processing: Label Streams, Semantics Utilization and Data Query Technologies (Premier Reference Source)

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Graph G is an F&B bisimulation graph of T if and only if G is the smallest graph such that every vertex in G is F&B bisimilar to a node in T. An F&B bisimulation graph can be constructed by clustering tree nodes that are F&B bisimilar. The construction can be extended from the construction of the bisimulation graph: if two vertices in the bisimulation graph have two different rooted paths, they will be separated into two vertices in the F&B bisimulation graph. It is easy to see that the F&B bisimulation graph is a further refinement of both the path index and the bisimulation graph in that for any node cluster n1 under F&B bisimulation graph there is a node cluster n2 under path index or bisimulation graph such that n1 is the subset of n2.

2. 3. All XML tree nodes that are F&B bisimilar are clustered into chunks All chunks having the same path ID are clustered into fragments All fragments having the same tag names are clustered into tapes These three clustering criteria have different granularity, with the chunk being the finest and the tape being the coarsest. It is easy to see that all nodes in the same type have the same tag name and all nodes with the same tag name are clusterd into one tape. Therefore, the tape has the same clustering criterion as the tag-name index, so answering queries such as //author amounts to finding the tape who is clustered based on tag name “author”.

Use the query features to filter out indexed units. d. Perform tree pattern matching for the remaining bisimulation vertex. The key idea of the feature-based index is to come up with the most distinctive features that have the maximum pruning power. To answer a twig query, the features need to be able to distinguish different bisimulation vertices having a certain tag name, and the capability to find subgraphs that are supergraphs of the query graph. The first is trivial since the tag name of the bisimulation graph serves the purpose.

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Advanced Applications and Structures in Xml Processing: Label Streams, Semantics Utilization and Data Query Technologies (Premier Reference Source) by Changqing Li, Tok Wang Ling

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