Mostra da U.Porto is back and from April 21 to 24 can be visited at the Pavilhão Multiusos de Gondomar

The 19th edition of the Mostra da Universidade do Porto runs until April 24 at the Pavilhão Multiusos de Gondomar. With free entrance and transportation, a large number of visitors is expected. They will be welcomed by students, teachers and technicians from various faculties of U.Porto and Research Centers.

Through the dozens of stands, the most curious will be able to experience numerous interactive activities and get to know the training offer of the undergraduate and master’s degree courses.

Students and their families who are considering applying to Higher Education will have the opportunity to attend several information sessions and on Sunday there will be special sessions on the transition from High School to Higher Education and on the social support they can apply for.

This year Mostra brings us a new feature, LIVE sessions that can be watched here.

At the Informatics and Computing Engineering stand, visitors will find motivated students available to answer all questions related to the Bachelor’s and Master’s degrees in Informatics and Computing Engineering and will be challenged to try out some serious games developed in the scope of the curricular units of these courses:

Quantik is a strategic board game. The game logic is developed with SICStus Prolog software and a 3D graphic interface was added later. There are different scenes, lights and cameras that make the environment richer. There are 3 different game modes to choose from: player vs player, player vs bot, and bot vs bot. It is also possible to undo moves and watch the game movie when the game is over.

Cromoparty is a game developed in C and Assembly. It is based on the famous game concept “Dance Dance Revolution”, but with some didactic references to biology, namely the mitosis process. Its main objective was to implement/deal with I/O operations in MinixOS of several devices such as keyboard, mouse, graphics card, etc.

Nudge is a strategic board game for two people. The game logic is developed with SICStus Prolog software and a 3D graphic interface was added later. There are different scenes, lights and cameras that make the environment richer. There are 3 different game modes to choose from: player vs player, player vs AI, and AI vs AI. It is also possible to undo moves and watch the replay when the game is over.

Grace is a telepresence robot that was to host the OpenCx conference at FEUP to be held in 2020, but did not make it due to the Covid 19 pandemic. The robot can be controlled by a Raspberry Pi running on Robot Operative System (ROS). To control the robot remotely, GraceVision was developed, an app on Flutter for iOS and Android that also allows access to the installed camera.

All the information about Mostra and its programme can be found here.

New PhD’s honored in the Conferement Ceremony 2022

The FEUP Auditorium will receive on April 8th, at 17:00, another Conferement Ceremony, which will award the most honorable distinction to those who completed their PhD and defended their thesis in 2020 and 2021.

In the list of honorees we find many students who decided to do their PhDs in DEI Programs. To them our best wishes, professional and personal.


Doctoral Program in Informatics Engineering

Bruno Miguel Carvalhido Lima


Doctoral Program in Digital Media

António Alberto Castro Baía Reis

Daniel dos Santos Catalão

Eduardo José Botelho Batista Morais de Sousa

João Miguel Calisto Marçal

Luciano José Santos Reis Moreira

Roberto Ivo Fernandes Vaz (Cum Laude)


Doctoral Program in Computer Science (Joint program with FCUP, UA and UM)

André Filipe Faria dos Santos

Diogo José Domingues Regateiro

Francisco Nuno Teixeira Neves

João Miguel Maia Soares de Resende

Joaquim Magalhães Esteves da Silva

Jorge Miguel Barros da Silva

José Luís da Silva Devezas (Cum Laude)

Liu Chong

Luís Miguel Tomé Nóbrega

Mariana Rafaela Figueiredo Ferreira de Oliveira

Patrícia Raquel Vieira Sousa

Ricardo Jorge Terroso de Araújo

Ricardo Pereira de Magalhães Cruz

Rogério António da Costa Pontes

Rui Jorge Pereira Gonçalves

Sílvia da Conceição Neto Bessa

DEI Talks | Formal Verification of Distributed Systems by Julien Brunel and David Chemouil

Julien Brunel and David Chemouil are senior researchers at ONERA, in Toulouse, specialized in formal specification and verification. Together with Nuno Macedo and Alcino Cunha (INESC TEC) they designed the 6th version (dubbed Electrum until recently) of the Alloy language and tool (originally proposed by the MIT). In recent years, Julien Brunel and David Chemouil have also been studying the verification of distributed algorithms. A recent highlight is the first mechanical proof of correctness of the distributed maintenance algorithm of the Chord peer-to-peer protocol, as well as formal techniques for the complete, semi-automatic verification of infinite-state systems, such as distributed algorithms.

Join us on the 8th April, at 14:30, in room I-105 of FEUP, for the presentation of this work.


The verification of distributed systems is challenging because these systems combine a rich structure, a high number of elements and a non-trivial temporal evolution. A trade-off between automation and completeness of the verification has to be made. In particular, one can use theorem provers, which offer complete confidence but tend to require considerable expertise and effort. Another option is to use model checkers, which offer complete automation, but cannot handle complex data structures and configurations.

In this talk, they will present recent work on verification techniques for distributed systems that are automatic and “as complete as possible”, or complete and “as automatic as possible”. They will illustrate their work with the analysis of Chord, a scalable distributed hash table.

INFORMATICS.OnBoard, the Informatics Engineering * Interpares Mentoring Program, promoted last April 2nd another social event between L.EIC 1st year students and their mentors.

The group went out to discover the “Little Portuguese Tibet” through the Brandas de Sistelo Trail (PR14 Walk). In this scenery of true rural beauty, where the fabulous terraces stand out in the landscape, students and teachers were able to socialize informally, in collaborative dynamics that promote mutual help, integration, friendship and well-being.

This was the second activity of the 2021/2022 edition. All the others can be seen at Informatics On Board

* Interpares Mentoring Program

 The Faculty of Engineering of the University of Porto has an INTERPARES MENTORING program in operation, aimed at students entering for the first time in this institution of Higher Education (mentees), both national and international, with the objective of supporting them in this new phase of their academic path. This program of social and academic integration is carried out by students (mentors) already attending the different courses in more advanced years, and coordinated by a team of teachers, being adapted to each course according to its characteristics. This program is totally voluntary for both mentors and mentees. This initiative is currently integrated in the U. Porto Mentoring Program.

DEI Talks | JUMPING FINITE AUTOMATA by Prof. Alexander Meduna

Prof. Alexander Meduna (born 1957 in Olomouc, Czech Republic ) is a theoretical computer scientist and expert on compiler design, formal languages and automata. He is a professor of Computer Science at the Brno University of Technology. Formerly, he taught theoretical computer science at various European and American universities, including the University of Missouri, where he spent a decade teaching advanced topics of formal language theory. He wrote over ninety papers related to theoretical computer science.

Join us on the 7th April, at 14:30, in room I-105 of FEUP, for the presentation of JUMPING FINITE AUTOMATA


This talk proposes a new investigation area in automata theory — jumping finite automata. These automata work like classical finite automata except that they read input words discontinuously — that is, after reading a symbol, they can jump over some symbols within the words and continue their computation from there. The talk gives several results concerning jumping finite automata in terms of commonly investigated areas of automata theory, such as closure properties. Most importantly, it achieves several results that demonstrate differences between jumping finite automata and classical finite automata. In its conclusion, the talk  formulates several open problems and suggests future investigation areas.

His latest book is Handbook of Mathematical Models for Languages and Computation

Meduna, Alexander; Tomko, Martin, Horacek, Petr (2019)

The Institution of Engineering and Technology, Stevenage, UK, ISBN: 978-1-78561-660-0

His previous books include

  • Meduna, Alexander (2000). Automata and Languages: Theory and Applications. Springer Science & Business Media. ISBN 9781852330743.
  • Meduna, Alexander (2007). Elements of Compiler Design. CRC Press. ISBN 9781420063233.
  • Meduna, Alexander (2014). Formal Languages and Computation: Models and Their Applications. CRC Press. ISBN 9781466513457.
  • Meduna, Alexander; Švec, Martin (2005). Grammars with Context Conditions and Their Applications. John Wiley & Sons. ISBN 9780471736554.
  • Meduna, Alexander; Techet, Jiří (2010). Scattered Context Grammars and Their Applications. WIT Press. ISBN 9781845644260.
  • Meduna, Alexander; Zemek, Petr (2014). Regulated Grammars and Automata. Springer. ISBN 9781493903696.
  • Meduna, Alexander; Soukup, Ondřej (2017). Modern Language Models and Computation: Theory with Applications. Springer. ISBN 9783319630991.

PhD Defense in Informatics Engineering: ”Increasing the Dependability of Internet-of-Things Systems in the context of End-User Development Environments”

João Pedro Matos Teixeira Dias

Date, Time e Place
1st of April, 09:00, remotely with streaming at:

President of the Jury
PhD Rui Filipe Lima Maranhão de Abreu, Full Professor at Faculdade de Engenharia da Universidade do Porto

PhD Dariusz Mrozek, Associate Professor at the Department of Applied Informatics at Silesian University of Technology, Poland;
PhD Pedro Nicolau Faria da Fonseca, Assistant Professor at the Department of Electronics, Telecommunications and Informatics of Universidade de Aveiro;
PhD André Monteiro de Oliveira Restivo, Assistant Professor at the Department of Informatics Engineering of Universidade do Porto;
PhD Hugo José Sereno Lopes Ferreira, Assistant Professor at the Department of Informatics Engineering of Universidade do Porto (Supervisor).


The ubiquitousness of computing, known as Internet-of-Things (IoT), has reshaped the way people interact with the physical world. However, the scale, distribution — both logical and geographical –, density, heterogeneity, interdependence, and {quality-of-service} requirements of these systems make them complex, posing several challenges from both operational and development viewpoints.

While there is a consensus that the widely used software engineering practices are inadequate for IoT development, they remain the go-to solutions for most practitioners. This aspect has severely compromised their dependability, centralizing most of the computation of these (soft) real-time systems in cloud infrastructure. Likewise, as these systems scale in terms of devices and applications, it outreaches existing technical resources to manage and operate them, becoming of paramount importance, making them as most self-managed as possible while empowering the ability of system operators (including end-users) to configure and understand them — mainly using solutions that do not require high technical expertise, viz. low-code development solutions — including the configuration of fail-safe measures.

This dissertation’s primary focus is to research how to improve the current status quo on the dependability of IoT. However, this is a manifold endeavor: (1) what are the best practices for developing IoT dependably, and what is their scientific soundness, (2) do the current solutions give the fundamental building blocks that allow to design and construct dependable systems, and, if not, what contributions are needed to overcome the existing limitations, and, lastly, (3) giving that these systems are operated by humans with limited technical expertise, it is required that their users can use and configure them without compromising their correct operation. As we set ourselves to tackle these challenges, we claim that:

It is possible to enrich IoT-focused end-user development environments in such a way that the resulting systems have a higher dependability degree, with the lowest impact on the know-how of the (end-)users.

As preliminary research, to understand what end-users want to automate and how they wish to perform such automations, a study was carried to collect automation scenarios. These scenarios showcased the complexity of the automations that some end-users want to perform and the interdependencies between different information sources, devices, and persons. It also supported the view that some of the appliances that end-users want to automate can have nefarious effects if a malfunction happens or a misconfiguration is performed.

We followed extensive literature research and experimental process to mine a set of patterns that can be used to improve IoT systems by making them more dependable, documenting them as patlets, which summarily describe solutions that address some particular problem within a specific context. We further studied a subset of these patterns as a self-healing pattern language that contemplates the use of more than one pattern in tandem to address systems’ operational concerns autonomically.

Adopting these patterns depends on supporting foundations, which include architectural and functional aspects of the target systems. A key aspect is that most of the current solutions do not provide any features to readjust their intrinsic behaviors during runtime — with the software that runs on edge devices being mostly set on stone, delegating all the computational needs to cloud-based services. The research on fog and edge computing attempt to mitigate this by leveraging computational resources across architectural tiers, making the resulting systems more dependable and improving their scalability. Taking on these foundations, we explored and asserted the feasibility of using serverless functions in the IoT context, optimizing the choice of execution contexts according to a priori preferences, constraints, and latencies.

To understand how these paradigms can be leveraged in widely used solutions, we select the open-source Node-RED solution as the experimental base, given its popularity. It provides a visual programming interface that increases its target user base across different expertise levels. Like other available solutions, Node-RED does not provide any feature that allows it to orchestrate tasks across devices or deal with system parts’ failures, limiting the dependability of systems built with it. Nonetheless, given its open-source and extensible nature, we proceed to address some of its limitations. We proceed to evaluate empirically, both in virtual and physical setups, the feasibility of using Node-RED as an orchestrator, where computational tasks are allocated to the available resources, and failures are mitigated by re-orchestrating as devices fail and recover. We also implemented a set of extensions for Node-RED that allows one to enrich the existing programs (i.e., flows) with self-healing capabilities — allowing the detection errors of different parts during runtime, and readjust its behavior to keep delivering correct service by recovering to normal operation, or, at least, maintain its operation within acceptable Quality-of-Service levels.

As IoT users have different expertise levels, we also attempt to improve the interaction with these systems in a way that the users can understand what the configured automations are (viz. inspection), how it is behaving (viz. observability and feedback), and increase their capability to know what was the possible cause behind certain events (viz. causality). In the first study, we extended the visual notations and functionalities of Node-RED to improve the development process using it. We proceed to empirically evaluate the performance of our solution against a non-modified version of Node-RED, observing statistically significant improvements in the users’ ability to evolve existing IoT deploys. Lastly, we explored the use of voice assistants as an alternative way of configuring, understanding, and interacting with IoT-enriched environments, with a particular focus on the ability of a user to understand the cause behind some events. We assert the feasibility of our solution by covering all the different automation possibilities that Node-RED supports, with a considerable extension of the interaction possibilities due to multi-message dialogs support. We proceeded to empirically validate the feasibility of users using the voice assistant to complete different tasks, and all the users were able to finish the tasks. While some valid sentences were incorrectly recognized, forcing the user to repeat their intent, participants expressed a preference for voice interfaces over visual ones in terms of subjective perception.

These contributions materialize into a core set of building blocks that, in assemble, can be used to improve the dependability of IoT systems while leveraging abstractions that do not hinder the (end-)user capability to configure, use, and evolve them. The experimental counterparts of the contributions provide empirical supporting evidence for the plausibility of the hypothesis.

Talk | “Interactive Music Analysis using the DFT and Pitch-Class Distributions extracted from MIDI files” by Fabian C. Moss

Fabien C. Moss is a Research Fellow in Cultural Analytics at University of Amsterdam (UvA). Working with large symbolic datasets of musical scores and harmonic annotations, he is primarily interested in Computational Music Analysis, Music Theory, Music Cognition, and their mutual relationship. His research is inherently interdisciplinary and aims to bridge the humanities and the sciences by drawing on methods and concepts from the Musicology and Music Theory, Mathematics, Music Information Retrieval, Data Science and Machine Learning, Music Psychology and Cognition, and the Digital Humanities.

Join us on the 4th of April, at 14:30, in room B015 of FEUP, for the presentation of “Interactive Music Analysis using the DFT and Pitch-Class Distributions extracted from MIDI files

By the author:

“The discrete Fourier transform (DFT) is a cornerstone of digital signal processing and commonly used to extract periodicities in time-continuous signals.

In recent years, however, mathematical music theorists have begun to explore DFT’s potential when applied not to the time but to the pitch-class domain, where the periodicities are given by equal divisions of the octave [1-3]. Earlier this year, we introduced wavescapes [4], a visualization method of hierarchical pitch-class relations in pieces of music.

Building on this work, we are currently developing midiVERTO [5], an interactive web app to analyze MIDI files using the DFT, that allows users to create wavescapes and inspect the dynamics of pitch-class distributions at several hierarchical levels. In my presentation, I will briefly introduce the underlying theoretical work followed by a tutorial on how to use the app for music analysis.

[1] Amiot (2016). Music Through Fourier Space: Discrete Fourier Transform in Music Theory. Springer.

[2] Noll (2019). Insiders’ Choice: Studying Pitch Class Sets Through Their Discrete Fourier Transformations. InMathematics and Computation in Music (pp. 371–378). Springer.

[3] Tymoczko & Yust (2019). Fourier Phase and Pitch-Class Sum. In Mathematics and Computation in Music (pp. 46–58). Springer.

[4] Viaccoz, C., Harasim, D., Moss, F. C., & Rohrmeier, M. (2022). Wavescapes: A visual hierarchical analysis of tonality using the discrete Fourier transform. Musicae Scientiae

[5] Harasim, D., Affatato, G., & Moss, F. C. (2022). midiVERTO: A Web Application to Visualize Tonality in Real Time. arXiv:2203.13158 [cs]

Tenders for the recruitment of 2 Assistant Professors for the disciplinary area of Informatics Engineering

Deadline for applications 28th of April 2022

Public Notice 279/2022

Professor José Manuel Pereira Dias de Castro Lopes, Full Professor of the Faculty of Medicine of the University of Porto and Vice-Rector of the University of Porto:
Following my Order issued on February 25th, 2022, by delegated power under the Ordinance no. 8378/2021 published in the Official Gazette, 2nd series, no. 164 of 24 August this call for applications is published for one position of Assistant Professor in the area of Informatics Engineering of the Faculty of Engineering of this University. The application procedure will remain in force for a period of 30 (thirty) business days as from the date immediately following the publication of this Notice in the Official Gazette. Edital EN

Public Notice 280/2022

Professor José Manuel Pereira Dias de Castro Lopes, Full Professor of the Faculty of Medicine of the University of Porto and Vice-Rector of the University of Porto:
Following my Order issued on February 25th, 2022, by delegated power under the Ordinance no. 8378/2021 published in the Official Gazette, 2nd series, no. 164 of 24 August this call for applications is published for one position of Assistant Professor in the area of Informatics Engineering of the Faculty of Engineering of this University. The application procedure will remain in force for a period of 30 (thirty) business days as from the date immediately following the publication of this Notice in the Official Gazette. Edital EN

PhD Defense in Digital Media: ”Instagram Photography: Toward the profiling of photography sharing modes of practice”

Cláudio António Moreira Alves do Carmo Reis

Date, Time e Place
29 de março, às 10h00, na Sala de Atos da Faculdade de Engenharia e por videoconferência.


President of the Jury
Doutor António Fernando Vasconcelos Cunha Castro Coelho, Professor Associado c/ Agregação da FEUP

Doutora Luísa Maria Lopes Ribas, Professora Auxiliar da Faculdade de Belas Artes da Universidade de Lisboa;
Doutora Sandra Vieira Jürgens, Professora Auxiliar Convidada do Departamento de História da arte da Faculdade de Ciências Sociais e Humanas da Universidade Nova de Lisboa;
Doutor João Pedro Ferreira Dias Leal, Professor Adjunto da Escola Superior de Media Artes e Design do Instituto Politécnico do Porto;
Doutor Pedro Leão Ramos Ferreira Neto, Professor Auxiliar da Faculdade de Arquitetura da Universidade do Porto;
Doutor Gilberto Bernardes de Almeida, Professor Auxiliar do Departamento de Engenharia Informática da Faculdade de Engenharia da Universidade do Porto;
Doutor José Manuel da Silva Fernandes de Carvalho Carneiro, Professor Auxiliar do Departamento de Design da Faculdade de Belas Artes da Universidade do Porto (Orientador).

‹Programming› 2022, Porto + Online

The International Conference on the Art, Science, and Engineering of Programming is a new conference focused on programming topics including the experience of programming. It was named ‹Programming› for short. ‹Programming› seeks for papers that advance knowledge of programming on any relevant topic, including programming practice and experience.
After Brussels, Nice, Genova, Porto, Cambridge, this sixth edition will follow a dual format, taking place in two moments, two venues, to offer two different kinds of experience:

First in Porto, Mon 21 – Fri 25 March, 2022, a charming city that will be happy to be able to embrace the participants, as soon as they arrive;
Later in an online venue, Mon 11 – Thu 14 April, 2022, 4 days, 2.5 hours/day, in different timezones, to welcome all around the world.

Ademar Aguiar, Associate Professor @DEI/FEUP, is the General Chair for this edition and tells us that the week ahead will be full of interesting sessions, with 2 keynotes, 15 talks, 6 demos, 3 workshops, 1 tutorial.
In addition, an Open Space track will welcome and host last minute ideas and interests on leading sessions among all participants.

The Social Program includes several social events, providing a mashup of Porto’s attractions, from historical to cultural, gastronomic and social, including local academy and industry. All of this to promote informal and playful conversations, to make sure that the experience will be unique and memorable.

Back to the future is the motto for 2022!

For + info and registration: