wimmics / dekalog

DeKaloG Project

IndeGx

This depot contains the code and data files created by the WIMMICS team as part of the DeKalog project. The goal of the WIMMICS team in this project is the building of a framework for the creation of an index of a set of SPARQL endpoints. The framework relies only on available semantic web technologies and the index appears as an RDF database. The index is primilarly composed of the self-description available in the endpoint. This original description is verified and expanded by the framework, using SPARQL queries.

• code/ contains the code and executable of the framework application
• rules/ contains the rules followed by our framework for the generation of an endpoint description in our index.
• docs/ contains the preliminary design document in which we discussed the basic concepts and methods used in our framework.
• LODMap/ contains the code for the KartoGraphI website.
• The file template-description.ttl is a basic template for the description of knowledge bases.
  • Metadatamatic is another of our project that allows the creation of a dataset description using a simple form. Its creation was inspired by the results of our experimentations of the IndeGx framework.

To Cite This Work

To cite this work in general or IndeGx in particular:

@article{maillot:hal-03946680,
  TITLE = {{IndeGx: A Model and a Framework for Indexing RDF Knowledge Graphs with SPARQL-based Test Suits}},
  AUTHOR = {Maillot, Pierre and Corby, Olivier and Faron, Catherine and Gandon, Fabien and Michel, Franck},
  URL = {https://hal.science/hal-03946680},
  JOURNAL = {{Journal of Web Semantics}},
  PUBLISHER = {{Elsevier}},
  YEAR = {2023},
  MONTH = Jan,
  KEYWORDS = {semantic index metadata extraction dataset description endpoint description knowledge graph ; semantic index ; metadata extraction ; dataset description ; endpoint description ; knowledge graph},
  PDF = {https://hal.science/hal-03946680/file/_DeKaloG__IndeGx___Web_Semantics_2022-1.pdf},
  HAL_ID = {hal-03946680},
  HAL_VERSION = {v1},
}

To cite KartoGraphI:

@inproceedings{maillot:hal-03652865,
    TITLE = {{KartoGraphI: Drawing a Map of Linked Data}},
    AUTHOR = {Maillot, Pierre and Corby, Olivier and Faron, Catherine and Gandon, Fabien and Michel, Franck},
    URL = {https://hal.archives-ouvertes.fr/hal-03652865},
    BOOKTITLE = {{ESWC 2022 - 19th European Semantic Web Conferences}},
    ADDRESS = {Hersonissos, Greece},
    PUBLISHER = {{Springer}},
    YEAR = {2022},
    MONTH = May,
    KEYWORDS = {linked data ; semantic web}
}

Metadata generated by IndeGx

dekalog's Issues

Language test not recognized for virtuoso Version 06.01.3127

Query used for the language test:
ASK
WHERE {
SELECT DISTINCT (lang(?o) as ?lang) WHERE {
?s ?p ?o
FILTER( isLiteral(?o) )
}
}

returns an error at "SELECT" in the virtuoso Version 06.01.3127 used for tests.
The query works when tested in DBPedia, DBPedia-fr, WASABI.