XML retrieval: Difference between revisions

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{{Short description|Content-based retrieval of XML documents}}

'''XML retrieval''', or '''XML information retrieval''', is the content-based retrieval of documents structured with [[XML]] (eXtensible Markup Language). As such it is used for computing [[Relevance (information retrieval)|relevance]] of XML documents.<ref>{{Cite web|url=ftp://ftp.tm.informatik.uni-frankfurt.de/pub/papers/ir/An%20Architecture%20for%20XML%20Information%20Retrieval%20in%20a%20Peer-to-Peer%20Environment_2007.pdf|title=An Architecture for XML Information Retrieval in a Peer-to-Peer Environment|last=WinterLalmas |first=JudithMounia |author2date=Drobnik, Oswald2009 |datetitle=NovemberXML 9,Retrieval 2007|publisherurl=ACMhttps://fi.wikipedia.org/wiki/XML-tiedonhaku#L%C3%A4hteet |access-datepublisher=2009-02-10Morgan & Claypool}}</ref>

==Queries==

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==Existing XML search engines==

An overview of two potential approaches is available.<ref>{{Cite journal|url=http://www.sigmod.org/record/issues/0612/p16-article-yahia.pdf|title=XML Search: Languages, INEX and Scoring|last=Amer-Yahia|first=Sihem|author2=Lalmas, Mounia |year=2006|journal=SIGMOD Rec. |volume=35 |issue=4|access-date=2009-02-10|doi=10.1145/1228268.1228271|s2cid=17300151}} {{Dead link|date=October 2010|bot=H3llBot}}</ref><ref>{{Cite citeseerxCiteSeerX |citeseerx = 10.1.1.109.5986|title=XML Retrieval: A Survey|last=Pal|first=Sukomal|date=June 30, 2006}}</ref> The INitiative for the Evaluation of XML-Retrieval (''INEX'') was founded in 2002 and provides a platform for evaluating such [[algorithm]]s.<ref name="INEX2006" /> Three different areas influence XML-Retrieval:<ref name="INEX2002">{{Cite web|url=http://www.is.informatik.uni-duisburg.de/bib/pdf/ir/Fuhr_etal:02a.pdf |title=INEX: Initiative for the Evaluation of XML Retrieval |last=Fuhr |first=Norbert |author2=Gövert, N. |author3=Kazai, Gabriella |author4=Lalmas, Mounia |year=2003 |work=Proceedings of the First INEX Workshop, Dagstuhl, Germany, 2002 |publisher=ERCIM Workshop Proceedings, France |access-date=2009-02-10 |archive-url=https://web.archive.org/web/20081121135758/http://www.is.informatik.uni-duisburg.de/bib/pdf/ir/Fuhr_etal:02a.pdf |archive-date=November 21, 2008 }}</ref>

===Traditional XML query languages===

[[Query language]]s such as the [[W3C]] standard [[XQuery]]<ref>{{Cite web|url=http://www.w3.org/TR/2007/REC-xquery-20070123/|title=XQuery 1.0: An XML Query Language|last=Boag|first=Scott|author2=Chamberlin, Don |author3=Fernández, Mary F. |author4=Florescu, Daniela |author5=Robie, Jonathan |author6= Siméon, Jérôme |date=23 January 2007|work=W3C Recommendation|publisher=World Wide Web Consortium|access-date=2009-02-10}}</ref> supply complex queries, but only look for exact matches. Therefore, they need to be extended to allow for vague search with relevance computing. Most XML-centered approaches imply a quite exact knowledge of the documents' [[Database schema|schemas]].<ref name="Schlieder2002">{{Cite journal|url=http://www.cis.uni-muenchen.de/people/Meuss/Pub/JASIS02.ps.gz |title=Querying and Ranking XML Documents |last=Schlieder |first=Torsten |author2=Meuss, Holger |year=2002 |journal=Journal of the American Society for Information Science and Technology |volume=53 |issue=6 |pages=489–503 |access-date=2009-02-10 |archive-url=https://web.archive.org/web/20070610002349/http://www.cis.uni-muenchen.de/people/Meuss/Pub/JASIS02.ps.gz |archive-date=June 10, 2007 |doi=10.1002/asi.10060 |url-access=subscription }}</ref>

===Databases===