Knowledge Graphs have become a foundation for sharing data on the web and building intelligent services across many sectors and also within some of the most successful corporations in the world. The over centralisation of data on the web, however, has been raised as a concern by a number of prominent researchers in the field. For example, at the beginning of 2022 a €2.7B civil lawsuit was launched against Meta on the basis that it has abused its market dominance to impose unfair terms and conditions on UK users in order to exploit their personal data1. The theft of personal data is still commonplace. For example, Microsoft, News Corp and the Red Cross are just some of the large organisations who have been data hacked in 2022.

Data centralisation can lead to a number of problems including: lock-in/siloing effects, lack of user control over their personal data, limited incentives and opportunities for interoperability and openness, and the resulting detrimental effects on privacy and innovation.

A number of diverse approaches and technologies exist for decentralising data, such as federated querying and distributed ledgers. The main question is, though, what does decentralisation really mean for web data and Knowledge Graphs? What are the main issues and tradeoffs involved? How can decentralised approaches best be applied to solve the problems outlined above? Are current techniques sufficient for decentralisation, where are they lacking, and how can we improve them?

We are organizing three distinct workshops to bring researchers together to discuss the above questions. The emphasis in all of these events will be on dialogue and collaboration enabling the exchange of research ideas and the creation of new knowledge. Our aim is that one of the main outcomes of these events will be a number of cross-community scholarly outputs.

TrusDeKW will thus be held at:

  1. The Solid Symposium 2023 which will be held in Nuremberg, Bavaria, Germany, March 30th-March 31st. This event is a forum for researchers, industry early adopters and the community at large to discuss the current state of the art related to the decentralized data store Solid
  2. The Web Conference 2023 which will be held in Austin Texas, April 30th to May 4th. This conference has, since its inception over three decades ago, been the premier venue to present and discuss research, development, standards, and applications related to the Web.
  3. ESWC 2023 which will be held in Hersonissos, Crete May 28th to June 1st. ESWC has been the main European venue for discussing research developments related to the Semantic Web, Linked Data and Knowledge Graphs over the last twenty years.

@Solid Symposium Important Dates

Registration Opens February 2023

Visit the Solid Symposium 2023 Website

@WebConf Important Dates

4 Page Position and Demo Paper February 6, 2023
Notification of Acceptance March 6, 2023
Camera-Ready Due March 20, 2023

Submissions will be handled via: EasyChair

Visit the WebConf 2023 Website

@ESWC Important Dates

4 Page Position and Demo Paper March 9th, 2023
Notification of Acceptance April 13th, 2023
Camera-Ready Due April 20th, 2023

Submissions will be handled via: EasyChair

Visit the ESWC 2023 Website

Solid Symposium 2023

Workshop Format

The emphasis of the workshop will be on bringing interested researchers together to discuss issues around Trusting Decentralised Knowledge Graphs and Web Data and making progress in some specific sub areas. As such we will organise three half day sessions:

  1. Lightning talks/posters on a related topic (see our topics list below).
  2. A decentralised query planning hackathon. The organisers own tools in this area include Comunica a knowledge graph querying framework over decentralised RDF on the Web from the research group at Ghent University and the federated query engines developed by Maria-Esther Vidal's group at TIB. The Open University's blockchain group will bring its tools for recording and validating RDF on a blockchain.
  3. A decentralised/personal policy modelling hackathon. Related work here includes the ODRL Information Model (and ontology) and the work of the Data Privacy Vocabularies And Controls Community Group. The workshop organisers have been engaged in both these activities.

Topics for lightening talks and posters

  • Decentralising KGs - approaches to decentralising KG schemas and data as well as decentralised hosting and storage solutions
  • Decentralising KG querying - including federated querying approaches
  • Explainability - for data and KG based decision making. Explainability may be high-level for non-computer science experts (e.g. understanding how their personal data has been used) or be based upon fine grained execution traces (e.g. for detailed verification).
  • Trust - decentralised approaches to adding trust to data and KG based applications for individuals, organisations and communities
  • Provenance - how can the provenance of decentralised data sets and KGs be handled? How to handle provenance when data sets are combined?
  • Decentralised KG data - giving individuals and communities full or a degree of control over their own data
  • Reliability, validity, and verifiability - how can we ensure that decentralised data and KGs are valid? How can we verify data within a decentralised KG? How to best ensure the reliability of the data?
  • Privacy in decentralised KGs - notions of data controllers and data processors are often an imperfect match to decentralised scenarios? How can we ensure privacy and data rights, e.g. as enshrined in Europe's GDPR legal framework?
  • Interpersonal data - handling trust, explainability, and data processing constraints with multiple data subjects within decentralised settings
  • Collective/consensual decision making - how can we best allow stakeholders and communities to collectively make decisions based on KGs?
  • Distributed Ledgers and KGs - how can Distributed Ledgers support the decentralisation of web data and KGs?

Organising Committee

Juan Cano, Universidad Politécnica de Madrid, Spain.

Andrea Cimmino, Universidad Politécnica de Madrid, Spain.

John Domingue, The Open University, UK (main contact).

Sabrina Kirrane, Vienna University of Economics and Business, Austria.

Philipp D. Rohde, TIB Leibniz Information Centre for Science and Technology and Leibniz University Hannover, Germany.

Aisling Third, The Open University, UK.

Ruben Verborgh, Ghent University, Belgium.

Maria-Esther Vidal, Leibniz University Hannover and TIB Leibniz Information Centre for Science and Technology, Germany.

WebConf 2023

Workshop Format

The format of the workshop will be engineered to facilitate a cross-flow of ideas amongst the participants with the aim of generating a post-workshop white paper. Thus, we will structure the workshop to incorporate the views of workshop participants who will cover a number of key stakeholder areas. After a brief introduction the day will start with a panel covering companies and large user groups who supply or use decentralised web data or KG products. The outcome topics and themes from the panel will then be used to structure 2 round table sessions guided by the workshop organisers. Feedback from both sessions will form the foundation of a post-workshop white paper outlining the main benefits and issues associated with trusting decentralised KGs and web data. A 45-minute demo session will allow participants to showcase any relevant tools. The exact format of the demo session will be determined once workshop participant numbers have been confirmed.

Agenda
Time Action
09:00 Introduction - outlining the workshop goals and introducing the organisers/supporters for the day.
09:15 Panel - a combination of industry (e.g. Inrupt) and stakeholders of user groups (e.g. national health services).
10:15 Agreement on themes for round table sessions based on prescribed workshop themes and outputs of panel discussion.
10:30 Coffee Break
11:00 Round Table Session 1
12:30 Lunch
13:30 Demos - of any tools related to the decentralising data and KG theme by workshop participants.
14:15 Report back from Round Table Session 1 and agreement on new topics.
14:45 Coffee Break
15:15 Round Table Session 2
16:30 Report back from Round Table Session 2 and agreement on next actions including a white paper.
17:00 Close

Call for Position Papers and Demos

TrusDeKW is looking for position papers and demos. Submissions are solicited in the following domains of interest:

  • Decentralising KGs - approaches to decentralising KG schemas and data as well as decentralised hosting and storage solutions
  • Decentralising KG querying - including federated querying approaches
  • Explainability - for data and KG based decision making. Explainability may be high-level for non-computer science experts (e.g. understanding how their personal data has been used) or be based upon fine grained execution traces (e.g. for detailed verification).
  • Trust - decentralised approaches to adding trust to data and KG based applications for individuals, organisations and communities
  • Provenance - how can the provenance of decentralised data sets and KGs be handled? How to handle provenance when data sets are combined?
  • Decentralised KG data - giving individuals and communities full or a degree of control over their own data
  • Reliability, validity, and verifiability - how can we ensure that decentralised data and KGs are valid? How can we verify data within a decentralised KG? How to best ensure the reliability of the data?
  • Privacy in decentralised KGs - notions of data controllers and data processors are often an imperfect match to decentralised scenarios? How can we ensure privacy and data rights, e.g. as enshrined in Europe's GDPR legal framework?
  • Interpersonal data - handling trust, explainability, and data processing constraints with multiple data subjects within decentralised settings
  • Collective/consensual decision making - how can we best allow stakeholders and communities to collectively make decisions based on KGs?
  • Distributed Ledgers and KGs - how can Distributed Ledgers support the decentralisation of web data and KGs?

Paper Submission

Position and demo papers are limited to four pages, including references. Submissions are NOT anonymous. Papers must be submitted in PDF format according to the ACM template published in the ACM guidelines, selecting the generic "sigconf" sample. The PDF files must have all non-standard fonts embedded. Workshop papers must be self-contained and in English. The authors' responsibility is to ensure that their submissions adhere strictly to the required format. Submissions that do not comply with the formatting guidelines will be rejected without review. Papers accepted in TrusDeKW will be published in the companion volume of the Web Conference 2023.

Submissions will be handled via: EasyChair

Review Criteria

The papers will be reviewed according to the following criteria:

  • Originality
  • Novelty
  • Soundness
  • Clarity and quality of presentation
  • Grounding in the literature and related work
  • Reproducibility and availability of resources (demo papers)

Important Dates

Important Dates
Requirement Date
4 Page Position and Demo Paper February 6th, 2023
Notification of Acceptance March 6th, 2023
Camera-Ready Due March 20th, 2023

All submission deadlines are end-of-day in the Anywhere on Earth (AoE) time zone.

Organising Committee

John Domingue, The Open University, UK.

Aisling Third, The Open University, UK.

Juan Cano, Universidad Politécnica de Madrid, Spain.

Andrea Cimmino, Universidad Politécnica de Madrid, Spain.

Ruben Verborgh, Ghent University, Belgium.

Philipp D. Rohde, TIB Leibniz Information Centre for Science and Technology and Leibniz University Hannover, Germany.

Maria-Esther Vidal, Leibniz University Hannover and TIB Leibniz Information Centre for Science and Technology, Germany.

Programme Committee

Maribel Acosta, Ruhr-University Bochum, Germany

Rob Brennan, University College Dublin, Ireland

Christopher Brewster, TNO, Netherlands

Mathieu d'Aquin, Université de Lorraine, Nancy, France

Michel Dumontier, Maastricht University, Netherlands

Paul Groth, University of Amsterdam, Netherlands

Olaf Hartig, Linköping University, Sweden

Luis-Daniel Ibáñez, University of Southampton, UK

Sabrina Kirrane, Vienna University of Economics and Business, Austria.

Julian Padget, University of Bath, UK

Stefan Schlobach, Free University Amsterdam, Netherlands

Chang Sun, Maastricht University, Netherlands

Ruben Taelman, Ghent University, Belgium.

ESWC 2023

Workshop Format

The format of the workshop will be engineered to facilitate a cross-flow of ideas amongst the participants with the aim of generating a post-workshop white paper. Thus, we will structure the workshop to incorporate the views of workshop participants who will cover a number of key stakeholder areas. After a brief introduction the day will start with a panel covering companies and large user groups who supply or use decentralised web data or KG products. The outcome topics and themes from the panel will then be used to structure 2 round table sessions guided by the workshop organisers. Feedback from both sessions will form the foundation of a post-workshop white paper outlining the main benefits and issues associated with trusting decentralised KGs and web data. A 45-minute demo session will allow participants to showcase any relevant tools. The exact format of the demo session will be determined once workshop participant numbers have been confirmed.

Agenda
Time Action
09:00 Introduction - outlining the workshop goals and introducing the organisers/supporters for the day.
09:15 Panel - a combination of industry (e.g. Inrupt) and stakeholders of user groups (e.g. national health services).
10:15 Agreement on themes for round table sessions based on prescribed workshop themes and outputs of panel discussion.
10:30 Coffee Break
11:00 Round Table Session 1
12:30 Lunch
13:30 Demos - of any tools related to the decentralising data and KG theme by workshop participants.
14:15 Report back from Round Table Session 1 and agreement on new topics.
14:45 Coffee Break
15:15 Round Table Session 2
16:30 Report back from Round Table Session 2 and agreement on next actions including a white paper.
17:00 Close

Call for Position Papers and Demos

TrusDeKW is looking for position papers and demos. Submissions are solicited in the following domains of interest:

  • Decentralising KGs - approaches to decentralising KG schemas and data as well as decentralised hosting and storage solutions
  • Decentralising KG querying - including federated querying approaches
  • Explainability - for data and KG based decision making. Explainability may be high-level for non-computer science experts (e.g. understanding how their personal data has been used) or be based upon fine grained execution traces (e.g. for detailed verification).
  • Trust - decentralised approaches to adding trust to data and KG based applications for individuals, organisations and communities
  • Provenance - how can the provenance of decentralised data sets and KGs be handled? How to handle provenance when data sets are combined?
  • Decentralised KG data - giving individuals and communities full or a degree of control over their own data
  • Reliability, validity, and verifiability - how can we ensure that decentralised data and KGs are valid? How can we verify data within a decentralised KG? How to best ensure the reliability of the data?
  • Privacy in decentralised KGs - notions of data controllers and data processors are often an imperfect match to decentralised scenarios? How can we ensure privacy and data rights, e.g. as enshrined in Europe's GDPR legal framework?
  • Interpersonal data - handling trust, explainability, and data processing constraints with multiple data subjects within decentralised settings
  • Collective/consensual decision making - how can we best allow stakeholders and communities to collectively make decisions based on KGs?
  • Distributed Ledgers and KGs - how can Distributed Ledgers support the decentralisation of web data and KGs?

Paper Submission

Position and demo papers are limited to four pages, including references. Submissions are NOT anonymous. Submissions must be either in PDF or in HTML, formatted in the style of the Springer Publications format for Lecture Notes in Computer Science (LNCS). For details on the LNCS style, see Springer's Author Instructions. For HTML submission guidance, see the HTML submission guide.

Submissions will be handled via: EasyChair

Review Criteria

The papers will be reviewed according to the following criteria:

  • Originality
  • Novelty
  • Soundness
  • Clarity and quality of presentation
  • Grounding in the literature and related work
  • Reproducibility and availability of resources (demo papers)

Important Dates

Important Dates
Requirement Date
4 Page Position and Demo Paper March 9th, 2023
Notification of Acceptance April 13th, 2023
Camera-Ready Due April 20th, 2023

All submission deadlines are end-of-day in the Anywhere on Earth (AoE) time zone.

Organising Committee

Juan Cano, Universidad Politécnica de Madrid, Spain.

John Domingue, The Open University, UK.

Sabrina Kirrane, Vienna University of Economics and Business, Austria.

Philipp D. Rohde, TIB Leibniz Information Centre for Science and Technology and Leibniz University Hannover, Germany.

Aisling Third, The Open University, UK.

Ruben Taelman, Ghent University, Belgium.

Steering Committee

Andrea Cimmino, Universidad Politécnica de Madrid, Spain.

Ruben Verborgh, Ghent University, Belgium.

Maria-Esther Vidal, Leibniz University Hannover and TIB Leibniz Information Centre for Science and Technology, Germany.

Programme Committee

Rob Brennan, University College Dublin, Ireland

Christopher Brewster, TNO, Netherlands

Mathieu d'Aquin, Université de Lorraine, Nancy, France

Michel Dumontier, Maastricht University, Netherlands

Paul Groth, University of Amsterdam, Netherlands

Olaf Hartig, Linköping University, Sweden

Luis-Daniel Ibáñez, University of Southampton, UK

Julian Padget, University of Bath, UK

Stefan Schlobach, Free University Amsterdam, Netherlands

Chang Sun, Maastricht University, Netherlands