Examining topic shifts in content-oriented XML retrieval

Abstract. Content-oriented XML retrieval systems support access to XML repositories by retrieving, in response to user queries, XML document components (XML elements) instead of whole documents. The retrieved XML elements should not only contain information relevant to the query, but also provide the right level of granularity. In INEX, the INitiative for the Evaluation of XML Retrieval, a relevant element is defined to be at the right level of granularity if it is exhaustive and specific to the query. Specificity was specifically introduced to capture how focused an element is on the query (i.e., discusses no other irrelevant topics). To score XML elements according to how exhaustive and specific they are given a query, the content and logical structure of XML documents have been widely used. One source of evidence that has led to promising results with respect to retrieval effectiveness is element length. This work aims at examining a new source of evidence deriving from the se...

• Type: Journal
• Year: 2007
• Where: JODL
• Authors: Elham Ashoori, Mounia Lalmas, Theodora Tsikrika
• Keywords: JODL 2007, XML Documents, XML Elements, XML Retrieval