Apache Marmotta Explained

Apache Marmotta
Developer:	Apache Software Foundation
Discontinued:	yes
Latest Release Version:	3.4.0
Programming Language:	Java
Language:	English
Genre:	Triplestore, rule reasoner
License:	Apache License 2.0

Apache Marmotta is a linked data platform that comprises several components. In its most basic configuration it is a Linked Data server.^{[1] [2]} Marmotta is one of the reference projects early implementing the new Linked Data Platform^{[3] [4] [5]} recommendation that is being developed by W3C.

It has been contributed by Salzburg Research from the Linked Media Framework,^{[6] [7] [8] [9]} and continues its versioning, hence starting at version 3.0.0.

Since April 2013, it is listed among the Semantic Web tools by the W3C.^[10]

In November 2020, it was retired to the Apache Attic, meaning that the project is no longer being developed.^[11]

Components

The project is split in several parts: the platform itself, which includes full Read Write Linked Data, SPARQL, LDP, Reasoning, and basic security. In addition to the platform, the project develops some libraries can also be used separately:

• KiWi, a Triplestore built on top of a relational database.
• LDPath, a path language to navigate across Linked Data resources.
• LDClient, a Linked Data client that allows retrieval of remote resources via different protocols by making use of pluggable adapters (data providers) that wrap other data sources (such as YouTube and Facebook).^[12]
• LDCache, a cache system that automatically retrieves resources by internally using LDClient.

History

Linked Media Framework (pre-Apache)

Apache Marmotta is the continuation of the open source Linked Media Framework published in early 2012.^{[13] [14]}

Apache Marmotta

• On November 16, 2012 it is proposed to the Apache Software Foundation under the name of Apache Linda, later changed to Apache Marmotta in order to avoid confusion with the Linda language.^[15]
• On 3 December 2012 Marmotta enters incubation.^[16]
• On April 26, 2013 Marmotta 3.0.0-incubating is released.^[17]
• On October 3, 2013 Marmotta 3.1.0-incubating is released.^[18]
• In November 2013, it graduated as top-level project.^{[19] [20] [21]}
• In April 2014, the project released its first actual release under the umbrella of the Apache Software Foundation: 3.2.0 version.^[22]
• On 5 December 2014, the project published the version 3.3.0.^{[23] [24]}

Notable users

• The backend of Salzburger Nachrichten's search and archive is powered by Marmotta.^[25]
• Enel uses Marmotta for its Open Data portal.^{[26] [27]}
• The cloud infrastructure of Redlink^[28] is powered by Marmotta.
• It is being used by some European research projects such as Fusepool and MICO (Media in Context).^{[29] [30]}
• Digital Public Library of America uses Marmotta to run LDP server and RDF repository.^[31]

Bibliography

• Book: Reto. Bachmann-Gmur. July 26, 2013. Instant Apache Stanbol. 1st. Packt Publishing. 978-1783281237.
• Book: Michael. Kaschesky. Luigi. Selmi. June 2013. Fusepool R5 linked data framework: concepts, methodologies, and tools for linked data. ACM New York. 156–165. 978-1-4503-2057-3.
• Book: 14 May 2013. Zukunft Von Linked Media: Trends, Entwicklungen Und Visionen.. The future of Linked Media: trends, discoveries and visions.. de. 1st. Salzburg Research Forschungsgesellschaft. 978-3902448361.
• Book: 2 January 2013. Qualitätssicherung Bei Annotationen. Quality assurance in annotations. de. Salzburg Research Forschungsgesellschaft. 978-3902448323.
• Book: Hassnaa. Moustafa. Zeadally. Sherali. Media Networks: Architectures, Applications, and Standards. CRC Press. 9781439877289. 14 May 2012. an ongoing open source development used to demonstrate the concepts of semantic lifting and interlinking of media resources .
• Book: Linked Media Interfaces. Salzburg Research Forschungsgesellschaft. 978-3902448293. 5 October 2011.
• Book: Linked Media. Ein White-Paper zu den Potentialen von Linked People, Linked Content und Linked Data.. A white paper on the potential of Linked People, Linked Content and Linked Data.. de. 8. Salzburg Research Forschungsgesellschaft. 978-3902448279. 26 April 2011.

External links

• • Marmotta Incubation Proposal
• Apache Marmotta presentation
• Apache Marmotta on the W3C

Notes and References

1. Web site: Apache Marmotta. Apache Marmotta. 2013-08-20.
2. Web site: GmbH. RedLink. Apache Marmotta (top-level project) is an Open Platform for Linked Data.. redlink. 1 August 2014. 3 December 2013. https://web.archive.org/web/20131203074051/http://redlink.co/portfolio/apache-marmotta/. dead.
3. Book: Steve Speicher . John Arwe . Ashok Malhotra . July 30, 2013 . Linked Data Platform 1.0 . Last Call Working Draft . W3C . 2013-11-24.
4. Web site: LDP Implementations. W3C LDP Working Group. 2013-11-24.
5. Web site: [//lists.w3.org/Archives/Public/public-ldp-comments/2014Sep/0004.html LDP Implementation Report for Apache Marmotta]. 2014-09-21.
6. Web site: Linked Media Framework . 2019-05-24 . https://archive.today/20130708212419/http://lmf.googlecode.com/ . 2013-07-08 . dead .
7. Web site: Apache Marmotta incubation proposal . Apache. 2013-08-20.
8. Web site: Apache Marmotta - Acknowledgements. Apache Marmotta. 2013-08-20.
9. Web site: Apache Marmotta is now a Top Level Apache Project. Redlink GmbH. 2013-11-25. 2013-12-02. https://web.archive.org/web/20131202222633/http://redlink.co/apache-marmotta/. dead.
10. https://www.w3.org/2001/sw/wiki/Marmotta W3C - Semantic Web - Apache Marmotta
11. Web site: Apache Marmotta. The Apache Software Foundation. 2021-03-01.
12. Web site: Converter to RDF. W3C. 2013-08-20.
13. Web site: W3C - Semantic Web - Apache Marmotta. W3C. 2013-12-25.
14. [ANNOUNCE] Apache Marmotta 3.0.0-incubating released!]. Sebastian. Schaffert. [e-mail]. 26 April 2013. 2013-12-25. 2013-07-29. https://web.archive.org/web/20130729095029/http://mail-archives.us.apache.org/mod_mbox/www-announce/201304.mbox/[e-mail]%3e. dead.
15. Apache Marmotta (was: Apache Linda). org.apache.incubator.general. 16 November 2012. 2013-12-25.
16. Web site: Marmotta Project Incubation Status page. Apache. 2013-08-20.
17. [//lists.w3.org/Archives/Public/semantic-web/2013Apr/0209.html Apache Marmotta 3.0.0-incubating released!]. Schaffert. Sebastian. Sebastian Schaffert. semantic-web AT w3.org. 26 April 2013. 2013-11-21.
18. [//lists.w3.org/Archives/Public/semantic-web/2013Oct/0040.html Apache Marmotta 3.1.0-incubating released!]. Schaffert. Sebastian. Sebastian Schaffert. semantic-web AT w3.org. 3 October 2013. 2013-11-21.
19. Web site: org.apache.incubator.general . Frank. Jakob. Jakob Frank. 28 October 2013 . 2013-12-25.
20. Web site: Apache Marmotta graduated to top-level project . Salzburg Research. 26 November 2013 . 2013-12-25.
21. Web site: Resolved to establish the Apache Marmotta Project . ASF . dead . https://web.archive.org/web/20131202222426/http://markmail.org/message/tc5vrsmady3mdo42 . 2013-12-02 .
22. Web site: [RESULT][VOTE] Release Apache Marmotta 3.2.0 ]. Frank. Jakob. Jakob Frank. 9 April 2014 . 2014-09-21.
23. Web site: [ANNOUNCE] Apache Marmotta 3.3.0 released]. Frank. Jakob. Jakob Frank. 18 December 2014 . 2015-01-05.
24. Web site: Apache Marmotta - Download. marmotta.apache.org. 2016-01-28.
25. Book: Georg Güntner, Sebastian Schaffert. June 30, 2013 . A Marmot against the Flood of Data . Salzburg NewMediaLab . 2013-11-24.
26. Web site: Open Data portal . 2020-06-19 . https://web.archive.org/web/20110924061010/http://data.enel.com/ . 2011-09-24 . dead .
27. Web site: Free dataset! Linked data are necessary to do business. Raffaele. Cirullo. 27 July 2013 . 2013-08-20.
28. http://redlink.co Redlink
29. Web site: Fusepool Linked Datapool for Technology Intelligence . 2013-12-25 . https://web.archive.org/web/20131227012948/http://challenge.semanticweb.org/2013/submissions/swc2013_submission_6.pdf . 2013-12-27 . dead .
30. Web site: MICO Kick-off Meeting in Salzburg. 2013-12-25.
31. Web site: DPLA wiki. 2015-09-22.