Research Article
Pipelined XPath Query Based on Cost Optimization
| Case | XPath expression | Number of results |
| T1 | //S//NP/PP/NN | 15 | T2 | //S[./VBP][.//NP/VP]//PP[.//IN]///VBN | 174 | T3 | //EMPTY[.//VP/PP//NNP][.//S[.//PP//JJ]//VBN]//PP/NP//_NONE_ | 1589 | X1 | //open_auctions/open_auction//time | 42915 | X2 | //regions/asia/item[./payment]//name | 1440 | X3 | //categories[./category[./name]/@id]//description | 720 |
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