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For descendant axis (//) and predicate ([]) structural features of XPath with different depths of the XML data stream recursive query processing problem, a method based on pushdown automation is presented. It made the kinds of step transform into the corresponding processing modules, then these modules are combined by the algorithm, the top-down tree query model is built. Because the multi-match will...
A query processor called lazyDFA which is created based on the automaton technology is an effective method to solute the problem of XPath query on XML data stream.This paper proposes the optimized algorithms aimed XPath which use the semantic and structural information of DTD in order to improve the efficiency of lazyDFA.The experimental results show that optimized algorithms can effectively accelerate...
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