Distributed Analytics

Over the past decade, vast amounts of machine-readable structured information have become available through the increasing popularity of semantic knowledge graphs in a variety of application domains. However, a major and yet unsolved challenge that research faces today is to perform scalable analytics, i.e. machine learning, inference and querying, of this knowledge while taking into account its rich semantic structures. Current analytics methods are, to our knowledge, either not fully aware of the semantics and structure of knowledge graphs or scale insufficiently.

The aim of this research line, in particular our SANSA project, is to research whether this severe limitation can be overcome by jointly leveraging results from distributed analytics and semantic technologies. To achieve this, SANSA will advance the state of the art by developing foundational models and algorithms in (1) data distribution techniques for semantic knowledge graphs, (2) semantics-aware distributed computation of resource embeddings in knowledge graphs, (3) adaptive distributed querying, (4) efficient self-optimising inference execution plans and (5) distributed symbolic machine learning approaches. These advancements will be implemented as a semantic analytics stack which uses distributed in-memory computing models as the foundation and includes further layers for (1) knowledge distribution and representation, (2) querying and inference as well as (3) machine learning. By design, each layer will be both semantics aware and horizontally scalable.

The synthesis of the above advancements can enable powerful analytics which impact on several application areas, including life sciences (e.g. improved therapy response prediction), media and publishing (e.g. entity resolution and semantic querying) and the internet of things (e.g. smart meter optimisation, traffic pattern detection).

Scalable Semantic Analytics Stack (SANSA)

Related Publications

Inproceedings

Draschner, Carsten Felix; Lehmann, Jens; Jabeen, Hajira

DistSim - Scalable Distributed in-Memory Semantic Similarity Estimation for RDF Knowledge Graphs Inproceedings

In: 15th IEEE International Conference on Semantic Computing, ICSC 2021, Laguna Hills, CA, USA, January 27-29, 2021, pp. 333–336, IEEE, 2021.

BibTeX | Links:

Mohamed, Heba; Fathalla, Said; Lehmann, Jens; Jabeen, Hajira

A Distributed Approach for Parsing Large-scale OWL Datasets Inproceedings

In: Proceedings of the 12th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management, IC3K 2020, Volume 2: KEOD, Budapest, Hungary, November 2-4, 2020, pp. 227–234, SCITEPRESS, 2020.

BibTeX | Links:

Mohamed, Heba; Fathalla, Said; Lehmann, Jens; Jabeen, Hajira

OWLStats: Distributed Computation of OWL Dataset Statistics Inproceedings

In: IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology, WI/IAT 2020, Melbourne, Australia, December 14-17, 2020, pp. 381–386, IEEE, 2020.

BibTeX | Links:

Dadwal, Rajjat; Graux, Damien; Sejdiu, Gezim; Jabeen, Hajira; Lehmann, Jens

Clustering Pipelines of Large RDF POI Data Inproceedings

In: The Semantic Web: ESWC 2019 Satellite Events - ESWC 2019 Satellite Events, Portorož, Slovenia, June 2-6, 2019, Revised Selected Papers, pp. 24–27, Springer, 2019.

BibTeX | Links:

Sejdiu, Gezim; Graux, Damien; Khan, Imran; Lytra, Ioanna; Jabeen, Hajira; Lehmann, Jens

Towards a Scalable Semantic-Based Distributed Approach for SPARQL Query Evaluation Inproceedings

In: Semantic Systems. The Power of AI and Knowledge Graphs - 15th International Conference, SEMANTiCS 2019, Karlsruhe, Germany, September 9-12, 2019, Proceedings, pp. 295–309, Springer, 2019.

BibTeX | Links:

Sui, Danning; Sejdiu, Gezim; Graux, Damien; Lehmann, Jens

The Hubs and Authorities Transaction Network Analysis using the SANSA framework Inproceedings

In: Proceedings of the Posters and Demo Track of the 15th International Conference on Semantic Systems co-located with 15th International Conference on Semantic Systems (SEMANTiCS 2019), Karlsruhe, Germany, September 9th - to - 12th, 2019, CEUR-WS.org, 2019.

BibTeX | Links:

Sejdiu, Gezim; Rula, Anisa; Lehmann, Jens; Jabeen, Hajira

A Scalable Framework for Quality Assessment of RDF Datasets Inproceedings

In: The Semantic Web - ISWC 2019 - 18th International Semantic Web Conference, Auckland, New Zealand, October 26-30, 2019, Proceedings, Part II, pp. 261–276, Springer, 2019.

BibTeX | Links:

Stadler, Claus; Sejdiu, Gezim; Graux, Damien; Lehmann, Jens

Sparklify: A Scalable Software Component for Efficient Evaluation of SPARQL Queries over Distributed RDF Datasets Inproceedings

In: The Semantic Web - ISWC 2019 - 18th International Semantic Web Conference, Auckland, New Zealand, October 26-30, 2019, Proceedings, Part II, pp. 293–308, Springer, 2019.

BibTeX | Links:

Stadler, Claus; Sejdiu, Gezim; Graux, Damien; Lehmann, Jens

Querying Large-scale RDF Datasets Using the SANSA Framework Inproceedings

In: Proceedings of the ISWC 2019 Satellite Tracks (Posters & Demonstrations, Industry, and Outrageous Ideas) co-located with 18th International Semantic Web Conference (ISWC 2019), Auckland, New Zealand, October 26-30, 2019, pp. 285–288, CEUR-WS.org, 2019.

BibTeX | Links:

Maqbool, Fahad; Razzaq, Saad; Lehmann, Jens; Jabeen, Hajira

Scalable Distributed Genetic Algorithm Using Apache Spark (S-GA) Inproceedings

In: Intelligent Computing Theories and Application - 15th International Conference, ICIC 2019, Nanchang, China, August 3-6, 2019, Proceedings, Part I, pp. 424–435, Springer, 2019.

BibTeX | Links:

Mami, Mohamed Nadjib; Graux, Damien; Scerri, Simon; Jabeen, Hajira; Auer, Sören; Lehmann, Jens

Squerall: Virtual Ontology-Based Access to Heterogeneous and Large Data Sources Inproceedings

In: The Semantic Web - ISWC 2019 - 18th International Semantic Web Conference, Auckland, New Zealand, October 26-30, 2019, Proceedings, Part II, pp. 229–245, Springer, 2019.

BibTeX | Links:

Mami, Mohamed Nadjib; Graux, Damien; Scerri, Simon; Jabeen, Hajira; Auer, Sören; Lehmann, Jens

Uniform Access to Multiform Data Lakes using Semantic Technologies Inproceedings

In: Proceedings of the 21st International Conference on Information Integration and Web-based Applications & Services, iiWAS 2019, Munich, Germany, December 2-4, 2019, pp. 313–322, ACM, 2019.

BibTeX | Links:

Jabeen, Hajira; Dadwal, Rajjat; Sejdiu, Gezim; Lehmann, Jens

Divided We Stand Out! Forging Cohorts fOr Numeric Outlier Detection in Large Scale Knowledge Graphs (CONOD) Inproceedings

In: Knowledge Engineering and Knowledge Management - 21st International Conference, EKAW 2018, Nancy, France, November 12-16, 2018, Proceedings, pp. 534–548, Springer, 2018.

BibTeX | Links:

Graux, Damien; Sejdiu, Gezim; Jabeen, Hajira; Lehmann, Jens; Sui, Danning; Muhs, Dominik; Pfeffer, Johannes

Profiting from Kitties on Ethereum: Leveraging Blockchain RDF with SANSA Inproceedings

In: Proceedings of the Posters and Demos Track of the 14th International Conference on Semantic Systems co-located with the 14th International Conference on Semantic Systems (SEMANTiCS 2018), Vienna, Austria, September 10-13, 2018, CEUR-WS.org, 2018.

BibTeX | Links:

Westphal, Patrick; Fernández, Javier D.; Kirrane, Sabrina; Lehmann, Jens

SPIRIT: A Semantic Transparency and Compliance Stack Inproceedings

In: Proceedings of the Posters and Demos Track of the 14th International Conference on Semantic Systems co-located with the 14th International Conference on Semantic Systems (SEMANTiCS 2018), Vienna, Austria, September 10-13, 2018, CEUR-WS.org, 2018.

BibTeX | Links:

Sejdiu, Gezim; Ermilov, Ivan; Lehmann, Jens; Mami, Mohamed Nadjib

DistLODStats: Distributed Computation of RDF Dataset Statistics Inproceedings

In: The Semantic Web - ISWC 2018 - 17th International Semantic Web Conference, Monterey, CA, USA, October 8-12, 2018, Proceedings, Part II, pp. 206–222, Springer, 2018.

BibTeX | Links:

Sejdiu, Gezim; Ermilov, Ivan; Mami, Mohamed Nadjib; Lehmann, Jens

STATisfy Me: What Are My Stats? Inproceedings

In: Proceedings of the ISWC 2018 Posters & Demonstrations, Industry and Blue Sky Ideas Tracks co-located with 17th International Semantic Web Conference (ISWC 2018), Monterey, USA, October 8th - to - 12th, 2018, CEUR-WS.org, 2018.

BibTeX | Links:

Jabeen, Hajira; Archer, Phil; Scerri, Simon; Versteden, Aad; Ermilov, Ivan; Mouchakis, Giannis; Lehmann, Jens; Auer, Sören

Big Data Europe Inproceedings

In: Proceedings of the Workshops of the EDBT/ICDT 2017 Joint Conference (EDBT/ICDT 2017), Venice, Italy, March 21-24, 2017, CEUR-WS.org, 2017.

BibTeX | Links:

Auer, Sören; Scerri, Simon; Versteden, Aad; Pauwels, Erika; Charalambidis, Angelos; Konstantopoulos, Stasinos; Lehmann, Jens; Jabeen, Hajira; Ermilov, Ivan; Sejdiu, Gezim; Ikonomopoulos, Andreas; Andronopoulos, Spyros; Vlachogiannis, Mandy; Pappas, Charalambos; Davettas, Athanasios; Klampanos, Iraklis A.; Grigoropoulos, Efstathios; Karkaletsis, Vangelis; Boer, Victor de; Siebes, Ronald; Mami, Mohamed Nadjib; Albani, Sergio; Lazzarini, Michele; Nunes, Paulo; Angiuli, Emanuele; Pittaras, Nikiforos; Giannakopoulos, George; Argyriou, Giorgos; Stamoulis, George; Papadakis, George; Koubarakis, Manolis; Karampiperis, Pythagoras; Ngomo, Axel-Cyrille Ngonga; Vidal, Maria-Esther

The BigDataEurope Platform - Supporting the Variety Dimension of Big Data Inproceedings

In: Web Engineering - 17th International Conference, ICWE 2017, Rome, Italy, June 5-8, 2017, Proceedings, pp. 41–59, Springer, 2017.

BibTeX | Links:

Ermilov, Ivan; Ngomo, Axel-Cyrille Ngonga; Versteden, Aad; Jabeen, Hajira; Sejdiu, Gezim; Argyriou, Giorgos; Selmi, Luigi; Jakobitsch, Jürgen; Lehmann, Jens

Managing Lifecycle of Big Data Applications Inproceedings

In: Knowledge Engineering and Semantic Web - 8th International Conference, KESW 2017, Szczecin, Poland, November 8-10, 2017, Proceedings, pp. 263–276, Springer, 2017.

BibTeX | Links:

Ermilov, Ivan; Lehmann, Jens; Sejdiu, Gezim; Bühmann, Lorenz; Westphal, Patrick; Stadler, Claus; Bin, Simon; Chakraborty, Nilesh; Petzka, Henning; Saleem, Muhammad; Ngomo, Axel-Cyrille Ngonga; Jabeen, Hajira

The Tale of Sansa Spark Inproceedings

In: Proceedings of the ISWC 2017 Posters & Demonstrations and Industry Tracks co-located with 16th International Semantic Web Conference (ISWC 2017), Vienna, Austria, October 23rd - to - 25th, 2017, CEUR-WS.org, 2017.

BibTeX | Links:

Lehmann, Jens; Sejdiu, Gezim; Bühmann, Lorenz; Westphal, Patrick; Stadler, Claus; Ermilov, Ivan; Bin, Simon; Chakraborty, Nilesh; Saleem, Muhammad; Ngomo, Axel-Cyrille Ngonga; Jabeen, Hajira

Distributed Semantic Analytics Using the SANSA Stack Inproceedings

In: The Semantic Web - ISWC 2017 - 16th International Semantic Web Conference, Vienna, Austria, October 21-25, 2017, Proceedings, Part II, pp. 147–155, Springer, 2017.

BibTeX | Links:

Proceedings

Chaves-Fraga, David; Heyvaert, Pieter; Priyatna, Freddy; Sequeda, Juan F.; Dimou, Anastasia; Jabeen, Hajira; Graux, Damien; Sejdiu, Gezim; Saleem, Mohammed; Lehmann, Jens (Ed.)

Joint Proceedings of the 1st International Workshop on Knowledge Graph Building and 1st International Workshop on Large Scale RDF Analytics co-located with 16th Extended Semantic Web Conference (ESWC 2019), Portorož, Slovenia, June 3, 2019 Proceeding

CEUR-WS.org, 2489 , 2019.

BibTeX | Links: