LDAC2019 - Linked Data in Architecture and Construction Week

Summer School (17-18 June 2019)
7th Linked Data in Architecture and Construction Workshop (19 - 21 June 2019)

The LDAC workshop series provides a focused overview on technical and applied research on the usage of semantic web, linked data and web of data technologies for architecture and construction (design, engineering, construction, operation, etc.). The workshop aims at gathering researchers, industry stakeholders, and standardization bodies of the broader Linked Building Data (LBD) community. This includes the buildingSMART Linked Data Working Group (LDWG) participants and the W3C Linked Building Data (LBD) Community Group participants. The aim of the workshop is to present current developments, coordinate efforts, gather stakeholders, and elaborate use cases.


This year's LDAC workshop takes place in Lisbon, Portugal, and is locally organized by the Design and Computation Group (DCG) of Faculdade de Arquitetura, Universidade de Lisboa, in partnership with Beta-i.

In this workshop, the main aim is to evaluate the current status of the different available ontologies to capture building data. This includes:

  • the ifcOWL ontology (buildingSMART)
  • Linked Building Data ontologies: BOT, PRODUCT, PROPS, OPM (W3C)
  • 3D geometry ontologies
  • geospatial ontologies
  • infrastructure ontologies (oil&gas, roads, tunnels, rail)
  • HVAC ontologies
  • building automation ontologies (BACS, DogOnt, SAREF)
  • semantic sensor ontologies (SSN)

Aside the development and usage of these ontologies, the purpose of the LDAC workshop is to also investigate ways in which the ontology-based data can be combined into a complete and holistic set of available building data.
Finally, and most importantly, a number of industry cases are invited, presenting interesting ideas, use cases, solutions or experience reports related to practical applications of Linked Data and Semantic Web technologies at any stage of construction lifecycle (design, construction, operations, facility management, renovation). Both success stories and discussions of obstacles in the way of adoption of presented technologies are welcome. The workshop topics include, but are not restricted to the following:

  • Linking building data to other data such as product libraries, GIS data, construction data, or sensor data
  • Applications in infrastructure projects and facilities
  • Utilization of building-related ontologies such as ifcOWL, BOT, PROPS, OMG/FOG, or OPM
  • Development of new ontologies or extension to existing ontologies
  • Mapping and alignment of ontologies
  • Using linking to enable interoperation between existing operational systems
  • Enriching systems with new data linked from external sources
  • Making data accessible by publishing it on the Web
  • Implementing services based on Linked Data and Semantic Web technologies
  • Methods, practices and problems to establish links and maintain linksets
  • Semantic query systems and approaches
  • Reasoning, rule systems, machine learning
  • Graph analytics and semantic data lakes
  • Visualization framework
  • Security and access control concerns


This year's LDAC will be directly preceded by a Summer School (17-18 June) that focuses entirely on the use of linked data and semantic web technologies for the built environment. In this summer school, experts and researchers in the use of these technologies for the AEC industry will share their knowledge and expertise to a limited audience of 40 participants (first come, first served).
The summer school targets starting PhD students and starting industry professionals within the AEC industry.
Coding experience is highly recommended.

  • Lectures

    A full program with high quality lectures is provided by 8 lecturers with hands-on knowledge and experience in linked data and semantic web technologies for the built environment. These lecturers are also available for questions and supervision during the duration of the summer school.

  • Hands-on exercises

    All lectures come with hands-on exercises of various kinds and topics, so that you are ready to continue coding with linked data in the built environment after the end of the summer school.

  • Coding challenge

    A coding challenge is put up, to which groups of four can participate in competition. All groups present their work on Wednesday 19 June, the first day of the LDAC2019 workshop.


    Each member of the winning group will be awarded a Kindle Paperwhite preloaded with LD/LBD material, generously sponsored by:

  • Lecturers

    • Anna Wagner
    • (Technische Universität Darmstadt)
    • Georg Schneider
    • (Fraunhofer IBP)
    • Jakob Beetz
    • (RWTH Aachen)
    • Pieter Pauwels
    • (Ghent University)
    • Mathias Bonduel
    • (Ghent University)
    • Mads Rasmussen
    • (NIRAS)
    • María Poveda
    • (Universidad Politécnica de Madrid)
    • Walter Terkaj
    • (CNR-STIIMA)
    • Kris McGlinn
    • (Trinity College Dublin)


Paper submission deadline: March 3, 2019
Industry case submission deadline: April 15, 2019
Notification of acceptance for paper submissions: April 22, 2019
Notification of acceptance for industry cases: May 2, 2019
Submission deadline for the revised texts: May 20, 2019
Summer school registration deadline: May 12, 2019
Workshop registration deadline: May 28, 2019

LDAC Summer School: June 17-18, 2019
LDAC Workshop: June 19-21, 2019


Ruben Verborgh
Ghent University – imec

Ruben Verborgh is a professor of Semantic Web technology at IDLab, Ghent University – imec, and a research affiliate at the Decentralized Information Group of CSAIL at MIT. Additionally, he acts as a technology advocate for Inrupt and the Solid ecosystem of apps that let you keep your own data. He aims to build a more intelligent generation of clients for a decentralized Web at the intersection of Linked Data and hypermedia-driven Web APIs. Through the creation of Linked Data Fragments, he introduced a new paradigm for query execution at Web-scale. He has co-authored two books on Linked Data, and contributed to more than 250 publications for international conferences and journals on Web-related topics.

Ora Lassila
State Street

Ora Lassila is a software architect at State Street. Earlier, he worked as a technology architect at Pegasystems, as an architect and technology strategist at Nokia Location & Commerce (aka HERE), and prior to that he was a Research Fellow at the Nokia Research Center Cambridge. He was an elected member of the Advisory Board of the W3C (World Wide Web Consortium) in 1998-2013, and represented Nokia in the W3C Advisory Committee in 1998-2002. In 1996-1997 he was a Visiting Scientist at MIT Laboratory for Computer Science, working with W3C and launching the Resource Description Framework (RDF) standard; he served as a co-editor of the RDF Model and Syntax specification.


This year, the LDAC 2019 workshop is preceded by a summer school focusing on linked data and semantic web technologies in the context of the built environment. This summer school will inlcude a number of lecturers by proficient developers and experts in the field.
This summer school takes place before the actual LDAC workshop, namely from 17 to 18 June.

The LDAC 2019 workshop itself will follow its usual set up and program. Namely, the workshop will host again a high number of plenary sessions, and the well-known technical track and industry case track will be organised in sequence.
Papers of the plenary sessions were peer-reviewed by the LDAC Committee and will be published as part of a separate volume of the CEUR-WS proceedings.
This workshop part takes place from 19 to 21 June.


Monday 17 June 2019

09:00 - 09:30:  Opening (presentation)
José Beirao, Rui de Klerk, Pieter Pauwels, Anna Wagner, Georg Schneider
09:30 - 11:30:  Linked Data and the Semantic Web: The Basics (exercises - presentation)
Pieter Pauwels
11:30 - 12:00:  Coffee break / open space
12:00 - 13:00:  Ontology Development (presentation)
María Poveda Villalón
13:00 - 14:00:  Lunch with informal Q&A
14:00 - 15:30:  Introduction to querying Linked Data (exercises - presentation)
Mads Holten Rasmussen
15:30 - 16:00:  Coffee break / open space
16:00 - 17:30:  Linked Building Data: Examples & Tools (exercises - presentation)
Mads Holten Rasmussen
17:30 - 18:00:  Coffee break / open space
18:00 - 18:30:  Kickoff coding challenge (presentation)
Anna Wagner, Georg Schneider
from 18:30:  Hackathon

Tuesday 18 June 2019

09:00 - 09:30:  Recap of the previous day
Anna Wagner
09:30 - 10:30:  Triple Stores: Introduction (presentation)
Mathias Bonduel
10:30 - 11:00:  Coffee break / open space
11:00 - 12:00: 

Coding with Linked Data

12:00 - 13:00: 

Coding with Linked Data

13:00 - 14:00:  Lunch
14:00 - 15:00: 

Coding with Linked Data

  • . Coding with Linked Data: Geospatial data (exercise) - Kris McGlinn
  • . Linked Building Product Data - Anna Wagner
from 15:00:  Hackathon

Wednesday 19 June - Workshop

Thursday 20 June - Workshop

Friday 21 June - Summer School and Workshop

  • 09:30 - 12:00: GIT issue sprint for W3C LBD Community Group (chair: Pieter Pauwels)
  • 12:00 - 14:30: lunch and closing meetings
  • 18:00 - 21:00: Beta-i TGIF ("thank god it's friday")
    • Fire up your network!
      Let’s celebrate Fridays the way they are supposed to: gathering Beta-i's community for some beers, music, and networking.

      This week will have the special participation of the Linked Building Data (LBD) community, celebrating the end of LDAC 2019.
      Come and meet them - and ask them about the potential of Semantic Web technologies to change the AEC industry and innovate in the Built Environment.

      Thank God It's Friday starts at 6 pm on the 7th-floor balcony of Beta-i Hub.
      Will we see you there?



Support this event: contact us at ldac2019@fa.ulisboa.pt



All submissions are reviewed by at least two members of the Program Committee, which consists of the following members:

  • Aaron Costin
  • Alba Fernández-Izquierdo
  • Álvaro Sicilia
  • Al-Hakam Hamdan
  • Ana-Maria Roxin
  • Chi Zhang
  • David Chaves-Fraga
  • Felix Larrinaga
  • Freddy Priyatna
  • Georg Ferdinand Schneider
  • German Nemirovskij
  • Gonçal Costa
  • James O'Donnell
  • José Nuno Beirao
  • Kris McGlinn
  • Iker Esnaola-Gonzalez
  • María Poveda Villalón
  • Maxime Lefrancois
  • Pieter Pauwels
  • Raúl Alonso
  • Raúl García-Castro
  • Ruben Taelman
  • Rui De Klerk
  • Seppo Törmä
  • Tamer El-Diraby
  • Walter Terkaj


  • Summer School + full Workshop package: € 350.00 -- Fully Booked!
  • Summer School only: € 300.00 -- Fully Booked!
  • Workshop only (full): € 100.00
  • Workshop only (1 day): € 70.00

Registrations are CLOSED.
If you didn't get the chance to register in advance and would still like to attend the event, e-mail us at: ldac2019@fa.ulisboa.pt


Lisbon, Portugal

The event will be held at the Beta-i Hub, at Av. Duque de Loulé – 12, 1050-007 Lisbon, Portugal. You can find its location via http://beta-i.com/hub/#contacts. The nearest subway station is Picoas (yellow line), between Marquês de Pombal and Saldanha. Please check the Metro website for further information: https://www.metrolisboa.pt/en/travel/diagrams-and-maps/.

For more information about Lisbon, please click here.


Wether you're flying to Lisbon or arriving by train or motor coach, the best option will be to take the subway from your place of arrival to the venue. The fare for a single trip is €1.45, after purchasing Lisbon's rechargeable public transport card for an aditional €0.50. The longest journey is from the Airport subway station to Picoas (the nearest to the event), which should take around 25 minutes and requires changing lines at Saldanha station.

If you're arriving by train at Oriente interface, you can take the subway there to Picoas. The route is the same as the previous, but with a shorter trip. Should you arrive at Santa Apolónia train station, the subway trip to Picoas will take slightly over 10 minutes, requiring you to change lines at Marquês de Pombal station.

Motor coaches arrive either at the Oriente interface (see above) or at Sete Rios. If you're arriving by motor coach at Sete Rios, you can take the subway there at Jardim Zoológico station, near the motor coach interface. The trip should take around 10 minutes, requiring you to change lines at Marquês de Pombal station.

Please check the Metro website for further information: https://www.metrolisboa.pt/en/.


There are plenty of places to stay in Lisbon city center and many of them at walking distance from the venue. A well ranked nearby location would be the Hotel Ibis Styles Lisboa Centro Liberdade NE: https://www.accorhotels.com/en/hotel-A146-ibis-styles-lisboa-centro-liberdade-ne/index.shtml#.

Other recommended hotels in the area are: