1 code implementation • 2 Apr 2021 • Umair Qudus, Muhammad Saleem, Axel-Cyrille Ngonga Ngomo, Young-Koo Lee
Albeit informative, these metrics are generic and unable to quantify and evaluate the accuracy of the cardinality estimators of cost-based federation engines.
no code implementations • 25 Feb 2021 • Waqas Ali, Muhammad Saleem, Bin Yao, Aidan Hogan, Axel-Cyrille Ngonga Ngomo
RDF has seen increased adoption in recent years, prompting the standardization of the SPARQL query language for RDF, and the development of local and distributed engines for processing SPARQL queries.
Knowledge Graphs Databases
1 code implementation • 13 Sep 2020 • Xinyue Zhang, Meng Wang, Muhammad Saleem, Axel-Cyrille Ngonga Ngomo, Guilin Qi, Haofen Wang
Based on Semantic Web technologies, knowledge graphs help users to discover information of interest by using live SPARQL services.
no code implementations • 7 May 2020 • Tommaso Soru, Edgard Marx, André Valdestilhas, Diego Moussallem, Gustavo Publio, Muhammad Saleem
We argue that "Question Answering with Knowledge Base" and "Question Answering over Linked Data" are currently two instances of the same problem, despite one explicitly declares to deal with Linked Data.
1 code implementation • ACM 10th International Conference on Knowledge Capture 2019 • Andre Valdestilhas, Tommaso Soru, Muhammad Saleem
Presently, WimuQ is able to execute both federated and non-federated SPARQL queries over a total of 668, 166 datasets from LOD Stats and LOD Laudromat as well as 559 active SPARQL endpoints.
1 code implementation • European Semantic Web Conference 2018 • Andre Valdestilhas, Tommaso Soru, Markus Nentwig, Edgard Marx, Muhammad Saleem, Axel-Cyrille Ngonga Ngomo
One of the Semantic Web foundations is the possibility to dereference URIs to let applications negotiate their semantic content.