In cooperation with Thomas Riechert (HTWK/InfAI), the DBpedia Association organized our second DBpedia meetup this year, this time in Lyon. On July 3rd, 2018, we met the French DBpedia Community at the ENS in person and presented the vision of the new DBpedia Databus, an opportunity which simplifies the work with data.

First and foremost, we would like to thank the Institute for Applied Informatics for supporting our community and the LARHRA Laboratory as well as the ENS for hosting our community meetup. Special thanks go to Thomas Riechert and Vincent Alamercery (LARHRA Lyon) for organizing the event.

Opening Session

Sebastian Hellmann (AKSW/KILT) opened up the meetup in Lyon by introducing the DBpedia development strategy and the new DBpedia Databus to the French DBpedia community (slides). Afterwards, Elmahdi Korfed from INRIA presented new features and tools as results developed in  the French DBpedia chapter (slides):

• QA KIS
• CORESE
• Discovery Hub
• AZKAR
• WASABI

In the following months, Elmahdi plans to work on the DBpedia historic live version and the DBpedia wiki commons. His research will be presented during our 12th DBpedia Community meeting on September 10th, in Vienna.

Following Elmahdi, Francesco Beretta presented LARHRA laboratory and its different research areas. In particular, he introduced the Data for History Consortium which is an international consortium founded in 2017 with the aim of improving geo-historical data interoperability in the semantic web.

Afternoon Track

The afternoon track started out with an inspiring presentation by Adam Sanchez from the University of Grenoble. He talked about ‘RDFization of a relational database from medicine domain using Ontop’ (slides) and introduced the Ontop mappings. Afterwards, Oscar Rodríguez Rocha (University of Côte d’Azur) showcased the application ‘Automatic Generation Educational Quizzes’ from DBpedia (slides) and explained how the automatic generation of quizzes works based on the game Les Incollables.

The meeting concluded with a dynamic discussion on the DBpedia Databus and potential collaborations between the DBpedia Association and the French DBpedia Chapter.

All slides and presentations are available on our Website. You can find more feedback and photos about the event on Twitter via #DBpediaLyon.

You still can’t get enough of DBpedia?

Don’t worry, we already have another meeting of the DBpedia community in the pipeline. Our 12th DBpedia Community meeting is scheduled for September 10th and preparations on the program are already in full swing. Our DBpedia Day will kick-off this year’s edition of SEMANTiCS 2018, hosted at TU Vienna and brings the European DBpedia community together.

You want to contribute? Please submit your proposal and be a part of our amazing program. Register here and meet us and other DBpedia enthusiasts in Vienna. We are looking forward to your contribution.  

For latest news and updates check Twitter, Facebook and our Website or subscribe to our newsletter.

See you soon!

Yours,

DBpedia Association

The post French DBpedia enthusiasts joined the meetup in Lyon. appeared first on DBpedia Association.

We are very excited to announce this year’s final students for our projects  at the Google Summer of Code program (GSoC).

Google Summer of Code is a global program focused on bringing more student developers into open source software development. Stipends are awarded to students to work on a specific DBpedia related project together with a set of dedicated mentors during summer 2017 for the duration of three months.

For the past 5 years DBpedia has been a vital part of the GSoC program. Since the very first time many Dbpedia projects have been successfully completed.

In this years GSoC edition, DBpedia received more than 20 submissions for selected DBpedia projects. Our mentors read many promising proposals, evaluated them and now the crême de la crême of students snatched a spot for this summer.  In the end 7 students from around the world were selected and will jointly work together with their assigned mentors on their projects. DBpedia developers and mentors are really excited about this 7 promising student projects.

List of students and projects:

• Ismael Rodriguez – DBpedia Mapping Front-End Administration 
• Ram Ganesan Athreya – First Chatbot for DBpedia
• Nausheen Fatma – Knowledge base embeddings for DBpedia
• Akshay Jagatap – Knowledge Base Embeddings for DBpedia
• Luca Virgili – The table extractor 
• Shashank Motepalli – Unsupervised Learning of DBpedia Taxonomy
• Krishanu Konar – Wikipedia List-Extractor

You want to read more about their specific projects? Just click below… or check GSoC pages for details.[expander_maker id=”1″ more=”Read more” less=”Read less”] Ismael Rodriguez – Project Description: Although the DBPedia Extraction Framework was adapted to support RML mappings thanks to a project of last year GSoC, the user interface to create mappings is still done by a MediaWiki installation, not supporting RML mappings and needing expertise on Semantic Web. The goal of the project is to create a front-end application that provides a user-friendly interface so the DBPedia community can easily view, create and administrate DBPedia mapping rules using RML. Moreover, it should also facilitate data transformations and overall DBPedia dataset generation. Mentors: Anastasia Dimou, Dimitris Kontokostas, Wouter Maroy 

Ram Ganesan Athreya – Project Description:The requirement of the project is to build a conversational Chatbot for DBpedia which would be deployed in at least two social networks.There are three main challenges in this task. First is understanding the query presented by the user, second is fetching relevant information based on the query through DBpedia and finally tailoring the responses based on the standards of each platform and developing subsequent user interactions with the Chatbot.Based on my understanding, the process of understanding the query would be undertaken by one of the mentioned QA Systems (HAWK, QANARY, openQA). Based on the response from these systems we need to query the DBpedia dataset using SPARQL and present the data back to the user in a meaningful way. Ideally, both the presentation and interaction flow needs to be tailored for the individual social network.I would like to stress that although the primary medium of interaction is text, platforms such as Facebook insist that a proper mix between chat and interactive elements such as images, buttons etc would lead to better user engagement. So I would like to incorporate these elements as part of my proposal.

Mentor: Ricardo Usbeck

Nausheen Fatma – Project discription:  Knowledge base embeddings has been an active area of research. In recent years a lot of research work such as TransE, TransR, RESCAL, SSP, etc. has been done to get knowledge base embeddings. However none of these approaches have used DBpedia to validate their approach. In this project, I want to achieve the following tasks: i) Run the existing techniques for KB embeddings for standard datasets. ii) Create an equivalent standard dataset from DBpedia for evaluations. iii) Evaluate across domains. iv) Compare and Analyse the performance and consistency of various approaches for DBpedia dataset along with other standard datasets. v)Report any challenges that may come across implementing the approaches for DBpedia. Along the way, I would also try my best to come up with any new research approach for the problem.

Mentors: Sandro Athaide Coelho, Tommaso Soru

Akshay Jagatap – Project Description: The project aims at defining embeddings to represent classes, instances and properties. Such a model tries to quantify semantic similarity as a measure of distance in the vector space of the embeddings. I believe this can be done by implementing Random Vector Accumulators with additional features in order to better encode the semantic information held by the Wikipedia corpus and DBpedia graphs.

Mentors: Pablo Mendes, Sandro Athaide Coelho, Tommaso Soru

Luca Virgili –  Project Description: In Wikipedia a lot of data are hidden in tables. What we want to do is to read correctly all tables in a page. First of all, we need a tool that can allow us to capture the tables represented in a Wikipedia page. After that, we have to understand what we read previously. Both these operations seem easy to make, but there are many problems that could arise. The main issue that we have to solve is due to how people build table. Everyone has a particular style for representing information, so in some table we can read something that doesn’t appear in another structure. In this paper I propose to improve the last year’s project and to create a general way for reading data from Wikipedia tables. I want to review the parser for Wikipedia pages for trying to understand more types of tables possible. Furthermore, I’d like to build an algorithm that can compare the column’s elements (that have been read previously by the parser) to an ontology so it could realize how the user wrote the information. In this way we can define only few mapping rules, and we can make a more generalized software.

Mentors: Emanuele Storti, Domenico Potena

Shashank Motepalli – Project Description: DBpedia tries to extract structured information from Wikipedia and make information available on the Web. In this way, the DBpedia project develops a gigantic source of knowledge. However, the current system for building DBpedia Ontology relies on Infobox extraction. Infoboxes, being human curated, limit the coverage of DBpedia. This occurs either due to lack of Infoboxes in some pages or over-specific or very general taxonomies. These factors have motivated the need for DBTax.DBTax follows an unsupervised approach to learning taxonomy from the Wikipedia category system. It applies several inter-disciplinary NLP techniques to assign types to DBpedia entities. The primary goal of the project is to streamline and improve the approach which was proposed. As a result, making it easy to run on a new DBpedia release. In addition to this, also to work on learning taxonomy of DBTax to other Wikipedia languages.

Mentors: Marco Fossati, Dimitris Kontokostas

Krishanu Konar – Project Description: Wikipedia, being the world’s largest encyclopedia, has humongous amount of information present in form of text. While key facts and figures are encapsulated in the resource’s infobox, and some detailed statistics are present in the form of tables, but there’s also a lot of data present in form of lists which are quite unstructured and hence its difficult to form into a semantic relationship. The project focuses on the extraction of relevant but hidden data which lies inside lists in Wikipedia pages. The main objective of the project would be to create a tool that can extract information from wikipedia lists, form appropriate RDF triplets that can be inserted in the DBpedia dataset.

Mentor: Marco Fossati [/expander_maker]

Congrats to all selected students! We will keep our fingers crossed now and patiently wait until early September, when final project results are published.

An encouraging note to the less successful students.

The competition for GSoC slots is always on a very high level and DBpedia only has a limited amount of slots available for students.  In case you weren’t among the selected, do not give up on DBpedia just yet. There are plenty of opportunities to prove your abilities and be part of the DBpedia experience. You, above all, know DBpedia by heart. Hence, contributing to our support system is not only a great way to be part of the DBpedia community but also an opportunity to be vital to DBpedia’s development. Above all, it is a chance for current DBpedia mentors to get to know you better. It will give your future mentors a chance to  support you and help you to develop your ideas from the very beginning.

Go on you smart brains, dare to become a top DBpedia expert and provide good support for other DBpedia Users. Sign up to our support page  or check out the following ways to contribute:

Get involved:

• Join our DBpedia-discussion -mailinglist, where we discuss current DBpedia developments. NOTE: all mails announcing tools or call to papers unrelated to DBpedia are not allowed. This is a community discussion list.
• If you like to join DBpedia developers discussion and technical discussions sign up in Slack
• Developer Discussion
• Become a DBpedia Student and sign up for free at the DBpedia Association. We offer special programs that provide training and other opportunities to learn about DBpedia and extend your Semantic Web and programming skills

We are looking forward to working with you!

You don’t have enough of DBpedia yet? Stay tuned and join us on facebook, twitter or subscribe to our newsletter for the latest news!

Have a great weekend!

Your

DBpedia Association

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