By Norbert Fuhr, Mounia Lalmas, Saadia Malik, Gabriella Kazai
Content-oriented XML retrieval has been receiving expanding curiosity because of the common use of eXtensible Markup Language (XML), that is changing into a customary record structure on the internet, in electronic libraries,and publishing. by way of 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 technique and go back record elements, so-called XML parts – rather than entire records – based on a consumer question. This concentrated retrieval technique is of specific bene?t for collections containing lengthy files or records protecting a wide selection of issues (e.g., books, person manuals, felony files, etc.), the place clients’ e?ort to find suitable content material might be decreased by way of directing them to the main proper components of the records. enforcing this, extra centred, retrieval paradigm signifies that an XML IR process wishes not just to ?nd correct info within the XML records, however it additionally has to figure out the precise point of granularity to be again to the consumer. furthermore, the relevance of a retrieved part could be depending on assembly either content material and structural question conditions.
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Extra info 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
E1) is 2; (E2) is resp. 12 , 12 , 12 × ( 12 − 0) = 14 , and 14 for lists A, B, C and D. Precisions is 1, 1, 12 and 12 . 2. If the user is satisfied with an element of exhaustivity at least 1 (25 % of the users): 1 Recall 1 (level 1/3). (E1) is 1; (E2) is resp. 9 2 ) = 4 for lists A, B, C and D. Precision is 1, 1, 1, and 4 . Recall 2 (level 2/3). (E1) is 1; (E2) is resp. 9 2 − 2 ) = 4 for lists A, B, C and D. 8 2 , 4 and 4 . 40 B. Piwowarski Recall 3 (level 1). (E1) is 2; (E2) is resp. 9 4 for lists A, B, C and D.
1, 1, 1 × ( 13 − 0) + 12 × (1 − 13 ) = 23 , and 1 for lists A, B, C and D. Precision is 1, 1, 23 , and 1. 7 Recall 2 (level 2/3). (E1) is 2; (E2) is resp. 12 , 12 , 12 × ( 13 − 0) + 13 × (1 − 13 ) = 18 , 7 7 7 and 18 for lists A, B, C and D. Precisions are 1, 1, 9 and 9 . Recall 3 (level 1). (E1) is 3; (E2) is resp. 13 , 13 , 13 × ( 13 − 0) = 19 , and 19 for lists A, B, C and D. Precisions are 1, 1, 13 and 13 . There is a way to combine the two sets of precisions that we do not describe here but give an example instead.
0 OVERLAP: on, off QUANT FUNCTIONS: gen, strict, genLifted DCV: 10, 25, 50 26 G. Kazai and M. 4 SSCAS, SVCAS, VSCAS and VVCAS These tasks are evaluated based on the Thorough task assumption, with “overlap=oﬀ”. 1 Correlation Analysis of Results Correlation of XCG Measures We examined correlation among the diﬀerent XCG measures by calculating the Kendall τ correlation  between their resulting respective system rankings. The correlation measure of Kendall’s τ is a nonparametric measure of the agreement between two rankings.