Download Advances in XML Information Retrieval: Third International by Saadia Malik, Mounia Lalmas, Norbert Fuhr (auth.), Norbert PDF

By Saadia Malik, Mounia Lalmas, Norbert Fuhr (auth.), Norbert Fuhr, Mounia Lalmas, Saadia Malik, Zoltán Szlávik (eds.)

The final aim of many info entry platforms (e.g., electronic libraries, the internet, intranets) is to supply the proper content material to their end-users. This content material is more and more a mix of textual content, multimedia, and metadata, and is formatted in response to the followed –W3C normal for info repositories, the so-called eXtensible Markup L- guage (XML). while lots of today’s info entry platforms nonetheless deal with do- ments as unmarried huge (text) blocks, XML deals the chance to take advantage of the interior constitution of records so that it will permit for extra detailed entry therefore offering extra particular solutions to person requests. supplying potent entry to XML-based content material is as a result a key factor for the luck of those platforms. the purpose of the INEX crusade (Initiative for the overview of XML Retrieval), which used to be organize at the start of 2002, is to set up infrastructures, XML try out suites, and acceptable measurements for comparing the functionality of knowledge retrieval platforms that goal at giving powerful entry to XML content material. extra accurately, the aim of the INEX initiative is to supply potential, within the kind of a wide XML attempt assortment and acceptable scoring tools, for the assessment of content-oriented XML retrieval systems.

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Extra resources for Advances in XML Information Retrieval: Third International Workshop of the Initiative for the Evaluation of XML Retrieval, INEX 2004, Dagstuhl Castle, Germany, December 6-8, 2004, Revised Selected Papers

Example text

A//@C” is any C attribute anywhere in the tree beneath an A tag in the tree. For any descendant of A use “//A//*”. Any descendant of the root, “//*”, is also any tag in the tree. “//*//*//*” is any tag at least three levels deep in the tree. “//*//A” is an A that is not the root of the tree, while “//*//A//*” means any descendant of A so long as A is not the root. Narrowed Extended XPath I (NEXI) 25 The path “//(A|B)” means any A tag in the tree or any B tag in the tree. “//(A|B)//(C|D)” is any C or D descendant of either an A or B tag.

Consequently, all CO topics in the heterogeneous track are already in NEXI. Basic CAS topics contain one structural constraint and one content constraint. , content)] where structure and content are single terms. This is a subset of NEXI which was, consequently, chosen for specifying BCAS topics. Compex CAS topics are the heterogeneous equivalent of ad hoc CAS topics. They are in the form //A[B] or //A[B]//C[D]. CCAS topics are specified in NEXI. Extended Complex Content and Structure (ECCAS) topics allow the query author to specify a belief in the correctness of a structural constraint.

Co : term | co term Example: +"face recognition" approach Loose interpretation: “I expect the phrase ‘face recognition’ will appear in a relevant document, I also anticipate the word ‘approach’ will help you find the documents I want”. 5 Bag of Words Term ordering in IR queries is often assumed to be irrelevant. In the “bag of words” interpretation, a query is an unordered set of search terms (and phrases). The assumption does not hold true for some queries. For example, computer history and history computer express different information needs even though the “bag of words” is identical.

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