Storage Retrieval

Download Advances in XML Information Retrieval and Evaluation: 4th by Norbert Fuhr, Mounia Lalmas, Saadia Malik, Gabriella Kazai PDF

By Norbert Fuhr, Mounia Lalmas, Saadia Malik, Gabriella Kazai

Content-oriented XML retrieval has been receiving expanding curiosity because of the frequent use of eXtensible Markup Language (XML), that is changing into a customary record layout on the net, in electronic libraries,and publishing. through exploiting the enriched resource of syntactic and semantic info that XML markup presents, XML info retrieval (IR) structures objective to enforce a extra targeted retrieval method and go back record parts, so-called XML parts – rather than entire records – based on a consumer question. This concentrated retrieval method is of specific bene?t for collections containing lengthy records or files protecting a wide selection of themes (e.g., books, consumer manuals, criminal files, etc.), the place clients’ e?ort to find suitable content material may be decreased by means of directing them to the main suitable components of the files. enforcing this, extra centred, retrieval paradigm signifies that an XML IR process wishes not just to ?nd appropriate info within the XML files, however it additionally has to figure out the proper point of granularity to be back to the consumer. moreover, the relevance of a retrieved part could be depending on assembly either content material and structural question conditions.

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Extra resources for Advances in XML Information Retrieval and Evaluation: 4th International Workshop of the Initiative for the Evaluation of XML Retrieval, INEX 2005, Dagstuhl Castle, Germany, November 28-30, 2005. Revised Selected Papers

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E. for the Focussed tasks overlap and near-misses are taken into account, whereas for the Thorough tasks the relevance value is a direct function of (e, s). Focussed tasks. Focussed tasks are evaluated based on the assumption that returned overlapping components represent only as much gain as the amount of new relevant information they contain and that the retrieval of near-misses is considered useful to the user. The evaluation parameter that represents this setup is referred to as “overlap=on”.

1500. g. nxCG[25]). g. MAnxCG[50]). – Q and R. The official system-oriented evaluation was based on the ep/grmeasures, with MAep being the main overall performance indicator. The official user-oriented evaluation was based on the nxCG[10], nxCG[25] and nxCG[50] performance indicators. All results are accessible on the INEX 2005 website5 . net6. group id=136430. net/. There is a README included within EvalJ, detailing how to get going and how to run the various evaluation measures. g. overlap is to be handled.

Malik, editors, INitiative for the Evaluation of XML Retrieval (INEX). Proceedings of the Second INEX Workshop, Dagstuhl, France, Dec. 2003. [4] B. Piwowarski, P. Gallinari, and G. Dupret. An extension of precision-recall with user modelling (PRUM): Application to XML retrieval. submitted for publication, 2005. [5] V. V. Raghavan, G. S. Jung, and P. Bollmann. A critical investigation of recall and precision as measures of retrieval system performance. ACM Transactions on Information Systems, 7(3):205–229, 1989.

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