About the project

Project Name: DASI Breaker

DAta SIlos Breaker: A Semantic Open Interoperability Solution to Break Down Data Silos.

Team: Luca Roffia, Cristiano Aguzzi, Brenno Tondato De Faria, Andrea Ferrari, Simone Persiani, Ludovico Granata, Lorenzo Gigli and Luca Sciullo

DASI Breaker is a semantic open interoperability solution to break down data silos and enable the development of data portability applications and services with native support for RDF and SPARQL. At low level, DASI Breaker supports OpenID Connect for client authentication and it allows to define authorization policies though the W3C Access Control List (ACL) ontology. At a higher level, an interoperable access to data is granted by open APIs like NGSI-LD, Linked Data Platform 1.0, and Solid Protocol.

Website: github.com/vaimee/dasi-breaker

Achievements from the first phase of the DAPSI programme

First of all, as a start-up in its very early stage, the DAPSI programme has been a big opportunity to put together a team of motivated, enthusiastic and young innovators. Passing to phase 2 proved that we are moving on the right direction and that gave us even more strength.

According to our goals, during phase 1 we have been able to implement on top of SEPA, the VAIMEE core technology, a set of APIs that will fuel the development of innovative distributed, interoperable, data-driven and context-aware Web applications and services. In particular, the APIs allow to interact with SEPA using both the SOLID and NGSI-LD protocols. Not all the entire NGSI-LD has been implemented but we are confident to finalize it by the end of phase 2. During the development, we contributed to the SOLID project with a PR on ACL (Access Control List) for managing group of users that has been accepted by the SOLID GitHub maintainers. An important achievement has also been the implementation of WAC (Web Access Control) mechanism at SEPA level thus enabling ACL for SPARQL agents.

All the source code is available on GitHub: https://github.com/vaimee/dasi-breaker

Do not hesitate! Feel free to contribute to our solution to enable the development of data portability applications and services!

Achievements from the second phase of the DAPSI programme

During the second phase of the DAPSI programme we focused on filling the gap to the realisation of the NGSI–LD layer that was not implemented in phase 1. At the end of phase 2 we achieve the full test coverage of the ScorpioBroker. Even if the implementation can be improved, this represents in our opinion a good achievement as it allows sharing NGSI-LD context data via other API like Solid or directly using SPARQL. We are planning to share the results with NEC which is the maintainer of the ScorpioBroker repository.

During the second phase of the programme, we also focused on the implementation of the MVP we defined in phase 1. As already mentioned, our challenge has been to develop an MVP for the predictive maintenance of cast resin transformers. We named the system MONAS (Monitoring and Analysis System). At the same time, a lot of time was spent developing the best way to commercialise our solution and make it real. Mentoring in such a respect was a fundamental part of the program that taught us to think big. Being visionary is what we are asked to do so we decided to imagine the most positive and yet realistic scenario we could. Exploiting our partnership with the producers of components for cast resin transformers was identified as the most suitable strategy to enter the potential market. We prepared a presentation and eventually we outlined the best subscription model for our product and came up with a profitable pricing hypothesis that we were able to propose our services to actual potential clients and early adopters.

All the source code is available on GitHub: https://github.com/vaimee/dasi-breaker



The DAPSI programme provides the perfect balance of funding, mentoring and training. The programme is very selective and be part of it made us more confident that our ideas are cutting edge. For a start-up devoted to innovation, DAPSI offers a very comfortable environment to grow. The support provided by Sara and all the staff, both for what concerns initiatives, networking, promotion and technical contents has been very valuable. Our mentors, Farid and Yann, gave us the tools to understand and develop our business. Be part of DAPSI programme? Just amazing!



    Luca Roffia

    Junior Assistant Professor at University of Bologna (Italy); VAIMEE co-founder and CEO

      Cristiano Aguzzi

      Software engineer and PhD candidate in Engineering and Information Technology at University of Bologna (Italy); VAIMEE co-founder and CTO

        Brenno Tondato De Faria

        M.Sc. in Artificial Intelligence Applied to Automation and Robotics, Centro Universitário FEI, São Bernardo do Campo, SP (Brazil)

          Andrea Ferrari

          M.Sc. in Computer Engineering, University of Bologna (Italy)

            Simone Persiani

            Master student in Artificial Intelligence, University of Bologna (Italy)

              Ludovico Granata

              Master student in Artificial Intelligence, University of Bologna (Italy)

                Lorenzo Gigli

                M.Sc. in Computer Science and research fellow at Department of Computer Science and Engineering, University of Bologna (Italy); software architect at Epoca S.r.l.; co-founder of AnyPrint S.r.l.

                  Luca Sciullo

                  M.Sc. and PhD candidate in Computer Science, University of Bologna (Italy); CTO at AnyPrint S.r.l.


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                  University of Bologna (UNIBO) spin-off founded in 2020.


                  DASI Breaker