EVENTS & NEWS


PACAS close out meeting


We are a bit sad to announce that PACAS is coming to an end, and will hold its close out meeting at the end of the month. On the 27th of February, the Consortium will gather in Brussels and the WP leaders will illustrate to PACAS’s project officers the results achieved within their WP’s.

But don’t be too sad! We have still much to say, and we will keep updating this website with our news and results, so… stay tuned and keep following us on Twitter and LinkedIn!

PACAS at the REFSQ2018 conference


PACAS has been selected to attend the 24th International Working Conference on Requirements Engineering: Foundation for Software Quality (REFSQ2018) to be held in Utrecht (the Netherlands) on the 19-22nd of March 2018. On this occasion, PACAS will provide full presentation of the paper “Pinpointing Ambiguity and Incompleteness in RE via Information Visualization and NLP” to an audience of both academic attendees and industry practitioners active in the field of requirements engineering.

The paper presents one technique that has been initially proposed in the first release of the reasoning proof-of-concept, and that provides a visualization of the concepts identified in the labels in one or more models, showing the perspective they belong to, and whether ambiguous terms are being used.

Multiple experts can use the work to discuss their own models in terms of the terminology they employ. In our paper, we report on a variant of this system that has been applied to the design of a website. A prototype tool that can be utilized to interactively filter the elements in the model supports our algorithm. Although not yet fully integrated in the PACAS platform, we believe this kind of tooling is essential to guarantee the terminological alignment between multiple designers. We expect this type of visualizations to be employed in follow-up projects that stem from PACAS.

Merry festive season!


PACAS project wishes you a joyful holiday season and a happy 2018!

We will be back in January with many news on our activities!

We worked hard, we played harder!


As you know, last November PACAS attended the SESAR Innovation Days 2017 with a Tutorial session on “Participatory architectural change management in Air Traffic Management system.

The first part of the Tutorial provided an overview of the participatory change management process, emphasizing the importance of active stakeholder participation and describing the two main support tools, i.e. gamification for stakeholder engagement, and automated reasoning techniques for handling complexity. In the second part, we introduced the PACAS approach, expressly created for architectural change management in ATM systems, and described an ATM example case study dealing with the Sectorless change issue. Finally, we concluded with a demo of the framework.

The Tutorial was a success! Many SIDs attendees participated in the session, leading to a lot of interactions with the platform. Application of the platform to the ATM domain, in particular, raised much interest amongst the audience.

At the beginning of December, PACAS also held its final validation workshop at the University of Trento. The workshop involved our Advisory Board, which digitally engaged with the platform, experiencing all of its features:

o Gamification
o Multi-modelling
o Automated reasoning
o Participatory management process

This thorough interaction generated lots of feedback that PACAS will include in its next deliverables.

PACAS tutorial at SIDs 2017


In the framework of the next SESAR Innovation Days, to be held at the University of Belgrade (Serbia), PACAS organises the tutorial session “Participatory architectural change management in Air Traffic Management system. The session will be held on Wednesday, 29th of November 2017 (h. 14:30-16:30). Participation is free and open but, due to space constraints, registration is required!

 

The Tutorial

Air Traffic Management (ATM) systems are complex systems of systems. Understanding all possible consequences of a design decision in an ATM system is a challenge due to the complexity of ATM systems and the existence of tight interdependencies within the ATM architecture. Knowing the implications of change(s) over the whole system is crucial to support decision-making, while making sure that the ATM system does not suffer from any issues with respect to functionality, safety, security, performance, cost efficiency, or other desired characteristics of a well-functioning ATM system. Given that decision-making involves the consideration of more high-level objectives, the change management process should involve multiple ATM domain stakeholders, one for each given objective, in order to explore a vast space of alternatives and agreeing on optimal solutions. It becomes, thus, crucial the active participation of stakeholders. However, given the variety of experts, their different areas of expertise, as well as their geographical distribution, participatory change management requires user engagement and tools to support and facilitate the work of experts along their interaction.

To address the first concern, in recent years, gamification is broadly used as a tool to engage participation with the help of elements, such as leader-boards or challenges between users. On the other hand, a multi-perspective, model-based approach provides important benefits in that:

1. it allows analyzing individual perspectives without the need of a holistic representation;

2. it handles complexity through automated reasoning techniques in a transparent way to find optimal solutions as a trade-off among different objectives.

We provide an overview of the participatory change management process, emphasizing the importance of active stakeholder participation. We describe the two main support tools, i.e. gamification for stakeholder engagement, and automated reasoning techniques for handling complexity.

Focus on: Participatory process, Gamification & Automated reasoning techniques

We introduce the PACAS approach, expressly created for architectural change management in ATM systems. We briefly describe an ATM example case study dealing with the Sectorless change issue, and conclude with a demo of the framework.

Focus on: ATM case study & Demo

We are looking forward to meeting you in Belgrade!

PACAS paper accepted to ER-17


PACAS paper “Goal Models for Acceptance Requirements Analysis and Gamification Design” has been accepted to the ER 2017 International Conference on Conceptual Modeling, to be held 6-9 November, 2017 in Valencia, Spain.
Additional details will be provided after the conference.

PACAS @MoDRE’17 workshop


PACAS members F. Başak Aydemir and Fabiano Dalpiaz presented the intelligent cross-view alignment method developed for the PACAS platform at the 2017 edition of the Model Driven Requirements Engineering Workshop (MoDRE’17) that is co-located with the 25th IEEE International Requirements Engineering Conference (RE 2017).

PACAS at the MoDRE 2017 Workshop

The paper presents the architecture and the inner workings of a web service that supports modelers in collaborative, multi-concern modelling settings.
The service extracts and analyzes the natural language text from models, and provides suggestions to the modellers based on what has been modelled in the other models included in the same project.
The motivation of the work comes from the change management processes in European air traffic management, where experts with different expertise from different countries collaborate with each other in order to analyze solution proposals from different aspects, such as safety and security, in order to make the best decision among different solution candidates. The main goal of the service is to support alignment in such settings, that is, to help modellers cover similar, if not the same concepts from the domain.

The presentation provoked a lively discussion within the audience. The audience suggested that the same approach can be applied to software development processes to manage models produced during the model-driven development. Possibilities for future work such as the application of advanced natural language processing libraries to improve the analysis of the natural language text extracted from the models were also discussed.

The pre-print of the paper is available here. You can also contact the authors for additional details via Twitter: @aydemirfb and @FabianoDalpiaz.


PACAS Members F. Basak Aydemir and Fabiano Dalpiaz attended the MoDRE Workshop, co-located with the Requirements Engineering Conference