We are happy to announce the first release of the knowledge graph for public procurement, integrating tender and company data.

Public procurement affects organisations across all sectors. With tenders amounting close to 2 trillion euros annually in the EU, it is critical that this market operates fairly and efficiently, supporting competitiveness and accountability. Data-driven insights can help make this happen, supporting buyers and suppliers alike in their procurement decisions.

TheyBuyForYou  OCDS ontology visualized with the Protege OntoGraph plugin:

TheyBuyForYou is a three-year initiative bringing together researchers, innovators and public administrations from 5 European countries.  It is supported by EU H2020. The aim of the programme is to make procurement data more easily accessible and hence facilitate better decisions in areas such as economic development, demand management, competitive markets and vendor intelligence.  To achieve this, TheyBuyForYou leverages a range of data sources which are integrated into a knowledge graph, which is used in data analytics and decision making.

Almost eighteen months into the programme, the team is proud to announce their first release of the TheyBuyForYou knowledge graph, integrating tender and company data. As of the first quarter of 2019, the graph consists of over 23 million triples (records), covering information about almost 220,000 tenders.

The knowledge graph is available as open source and is compatible with standards in the procurement domain:

  • OCDS (Open Contracting Standard), capturing tender data throughout the contracting process.
  • euBG ontology, developed by the European euBusinessGraph project, providing a common model for company data.

The graph capitalises on data from two market leaders in their fields: OpenCorporates (for company data), and OpenOpps (for tenders and contracts, including the Tenders Electronic daily – TED – data feed).

Dr. Ahmet Soylu, SINTEF Digital (technical manager): 

“Government spending processes need data and tools that enable transparent decision making. The TheyBuyForYou knowledge graph constitutes an important step in the right direction and may become the core model for future procurement data ecosystems.”

Prof Oscar Corcho, Universidad Politécnica de Madrid (knowledge engineering expert): 

“Governments and public entities must deliver transparent services in the face of reduced budgets, while preventing losses through fraud and corruption. The TheyBuyForYou knowledge graph provides an appropriate response to these challenges.”

Dr. George Konstantinidis, University of Southampton (data management expert): 

“Managing, integrating, interacting with and providing analytics on top of procurement data is dependent upon reliable and well-designed data infrastructure. The TheyBuyForYou knowledge graph is a coordinated effort to achieve these goals.”

Ian Makgill, OpenOpps (govtech entrepreneur):

“We are very happy to see our data feeds and APIs integrated in the TheyBuyForYou knowledge graph. We hope that more data providers and consumers will adopt this technology, which can become an extremely useful channel to reach new customers and develop business models for procurement related data assets.”

Prof Elena Simperl, University of Southampton (knowledge engineering expert):

“Knowledge graphs bring together data from a variety of sources into a common format that can be easily extended and reused by organisations. By releasing the graph open source we hope to encourage developers to use it in their own products and give us feedback on how we could improve it.”

Find the knowledge graph at