Search Results for author: Muhammad Saleem

Found 6 papers, 4 papers with code

An Empirical Evaluation of Cost-based Federated SPARQL Query Processing Engines

1 code implementation2 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.

Benchmarking

A Survey of RDF Stores & SPARQL Engines for Querying Knowledge Graphs

no code implementations25 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

Revealing Secrets in SPARQL Session Level

1 code implementation13 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.

Knowledge Graphs

Where is Linked Data in Question Answering over Linked Data?

no code implementations7 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.

Question Answering

More Complete Resultset Retrieval from Large Heterogeneous RDF Sources

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.

RDF Dataset Discovery Retrieval

Where is my URI?

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.

RDF Dataset Discovery

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