Many previous works of data mining user queries in Peer-to-Peer systems focused their attention on the distribution of query contents. However, few has been done towards a better ...
XML languages, such as XQuery, XSLT and SQL/XML, employ XPath as the search and extraction language. XPath expressions often define complicated navigation, resulting in expensive...
Structural join operations are central to evaluating queries against XML data, and are typically responsible for consuming a lion's share of the query processing time. Thus, ...
This paper proposes several vectorial operators for processing XML twig queries, which are easy to be performed and inherently efficient for both Ancestor-Descendant (A-D) and Par...
d Abstract) Dario Colazzo1 , Giorgio Ghelli2 , Paolo Manghi2 , and Carlo Sartiani2 1 LRI - Universit?e Paris Sud 2 Dipartimento di Informatica - Universit`a di Pisa If a subexpress...
Dario Colazzo, Giorgio Ghelli, Paolo Manghi, Carlo...