| Autor: |
Ngu, Anne H. H., Kitsuregawa, Masaru, Neuhold, Erich J., Chung, Jen-Yao, Sheng, Quan Z., Bashir, Engie, Boulos, Jihad |
| Zdroj: |
Web Information Systems Engineering - WISE 2005; 2005, p552-559, 8p |
| Abstrakt: |
Since the evaluation of XPath expressions is highly dependent upon their size and navigational structures that include ancestor-descendant relationships ("//") and wildcard steps ("/∗"), we introduce a novel and complementary approach to optimizing XPath queries by rewriting and minimizing such structural occurrences. This rewriting approach depends upon the existence of a statistical schema, which we derive from a set of pre-processed XML documents. However, an imprecision in the schema extraction may lead to a loss of accuracy in the results. Through experimentation and analysis, we validate the scalability and efficiency of our approach. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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