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Wildcards for lightweight information integration in virtual desktops

by: Rodolfo Stecher, Claudia Niederée, and Wolfgang Nejdl

In: CIKM '08: Proceeding of the 17th ACM conference on Information and knowledge management New York, NY, USA: ACM (2008) , p. 797--806.

Abstract

We present a flexible information integration approach which addresses the dynamic integration needs in a personal desktop environment where only partial mappings are defined between the sources to be integrated. Our approach is based on query rewriting using substitution rules. In addition to exploiting defined mappings, we employ substitution strategies, which are inspired by the idea of using wildcards in querying and filtering tasks. Starting from a triple based query language as used for querying RDF data, unmapped ontological elements are substituted in a controlled way with variables, leading to a controlled form of query relaxation. In addition, the approach also provides evidences for refining the existing mapping based on the results of executing the relaxed queries. Different strategies for replacing non-matched ontology elements with variables are presented and evaluated over real-world data sets.

BibTeX record

@inproceedings{1458189,
  abstract = {We present a flexible information integration approach which addresses the  dynamic integration needs in a personal desktop environment where only partial mappings are defined between the sources to be integrated. Our   approach is based on query rewriting using substitution rules. In addition to exploiting defined mappings, we employ substitution strategies, which are inspired by the idea of using wildcards in querying and filtering tasks. Starting from a triple based query language as used for querying RDF data, unmapped ontological elements are substituted in a controlled way with variables, leading to a controlled form of query relaxation. In addition, the approach also provides evidences for refining the existing mapping based on the results of executing the relaxed queries. Different strategies for replacing non-matched ontology elements with variables are presented and evaluated over real-world data sets.},
  added-at = {2009-01-21T09:47:09.000+0100},
  address = {New York, NY, USA},
  author = {Stecher, Rodolfo and Niederée, Claudia and Nejdl, Wolfgang},
  biburl = {http://www.bibsonomy.org/bibtex/254a249ca255a0fe2c67230eb2a484756/nepomuk},
  booktitle = {CIKM '08: Proceeding of the 17th ACM conference on Information and knowledge management},
  doi = {http://doi.acm.org/10.1145/1458082.1458189},
  interhash = {2fd3aa2834f5ed1f78b0a4f4ae61be3a},
  intrahash = {54a249ca255a0fe2c67230eb2a484756},
  isbn = {978-1-59593-991-3},
  keywords = {10-2008 L3S WP5 from:stecher},
  location = {Napa Valley, California, USA},
  pages = {797--806},
  publisher = {ACM},
  timestamp = {2009-01-21T09:47:09.000+0100},
  title = {Wildcards for lightweight information integration in virtual desktops},
  year = 2008
}

Endnote record

%0 Conference Paper
%1 1458189
%A Stecher, Rodolfo
%A Niederée, Claudia
%A Nejdl, Wolfgang
%B CIKM '08: Proceeding of the 17th ACM conference on Information and knowledge management
%@ 978-1-59593-991-3
%C New York, NY, USA
%D 2008
%I ACM
%K 
%P 797--806
%T Wildcards for lightweight information integration in virtual desktops
%R http://doi.acm.org/10.1145/1458082.1458189
%X We present a flexible information integration approach which addresses the  dynamic integration needs in a personal desktop environment where only partial mappings are defined between the sources to be integrated. Our   approach is based on query rewriting using substitution rules. In addition to exploiting defined mappings, we employ substitution strategies, which are inspired by the idea of using wildcards in querying and filtering tasks. Starting from a triple based query language as used for querying RDF data, unmapped ontological elements are substituted in a controlled way with variables, leading to a controlled form of query relaxation. In addition, the approach also provides evidences for refining the existing mapping based on the results of executing the relaxed queries. Different strategies for replacing non-matched ontology elements with variables are presented and evaluated over real-world data sets.