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About

I am Full Professor at the Department of Informatics at the University of Minho, and senior researcher at the High Assurance Software Laboratory (HASLab INESC TEC). Since October 2016, I am also serving as Deputy Head of UNU-EGOV, the United Nations University Operational Unit on Policy-driven Electronic Governance (egov.unu.edu).

My research interests are focused on program semantics and calculi applied to systems understanding and rigorous software construction. I am particularly interested in coalgebra theory and conductive reasoning, as well as on modal and hybrid logics.

In recent years I coordinated four research projects at the national level, bilateral partnerships with Brazil and China, and served as the Portuguese coordinator for the Language Engineering and Rigorous Software Development ALFA EU-Latin America network, a PhD training network funded by the European Union. I have published five book chapters, 25 journal papers and more than 60 international conference papers. Having served as invited lecturer in MSc and PhD programmes at the Universities of Bristol (United Kingdom), Tartu (Estonia), and Peking (China), I have supervised several PhD projects (six concluded; four on-going). One of my students, Alexandre Madeira, received the 2013 IBM Scientific Prize, the biggest award in Informatics in Portugal.

I integrated the founding team of the Joint Doctoral Programme in Computer Science of the Universities of Minho, Aveiro, and Porto (MAP-i), and served as its Director. I am a member of IFIP WG1.3 (Foundations of System Specification), and, since January 2019, chair of IFIP Tecnhical Committee TC1 on Foundations of Computer Science.

Currently, I am leading the Quantum Software Engineering Research Group at INL, the International Iberian Nanotechnology Laboratory.

Interest
Topics
Details

Details

  • Name

    Luís Soares Barbosa
  • Cluster

    Computer Science
  • Role

    Research Coordinator
  • Since

    01st November 2011
003
Publications

2022

Coalgebra for the working software engineer

Authors
Barbosa, LS;

Publication
FLAP

Abstract
Often referred to as ‘the mathematics of dynamical, state-based systems’, Coalgebra claims to provide a compositional and uniform framework to specify, analyse and reason about state and behaviour in computing. This paper addresses this claim by discussing why Coalgebra matters for the design of models and logics for computational phenomena. To a great extent, in this domain one is interested in properties that are preserved along the system’s evolution, the so-called ‘business rules’ or system’s invariants, as well as in liveness requirements, stating that e.g. some desirable outcome will be eventually produced. Both classes are examples of modal assertions, i.e. properties that are to be interpreted across a transition system capturing the system’s dynamics. The relevance of modal reasoning in computing is witnessed by the fact that most university syllabi in the area include some incursion into modal logic, in particular in its temporal variants. The novelty is that, as it happens with the notions of transition, behaviour, or observational equivalence, modalities in Coalgebra acquire a shape. That is, they become parametric on whatever type of behaviour, and corresponding coinduction scheme, seems appropriate for addressing the problem at hand. In this context, the paper revisits Coalgebra from a computational perspective, focussing on three topics central to software design: how systems are modelled, how models are composed, and finally, how properties of their behaviours can be expressed and verified. © 2022, College Publications. All rights reserved.

2022

A Logic for Paraconsistent Transition Systems

Authors
Cruz, A; Madeira, A; Barbosa, LS;

Publication
Proceedings of the 10th International Conference on Non-Classical Logics. Theory and Applications, NCL 2022, Lódz, Poland, 14-18 March 2022.

Abstract

2021

Fuzzy Automata as Coalgebras

Authors
Liu, A; Wang, S; Barbosa, LS; Sun, M;

Publication
MATHEMATICS

Abstract
The coalgebraic method is of great significance to research in process algebra, modal logic, object-oriented design and component-based software engineering. In recent years, fuzzy control has been widely used in many fields, such as handwriting recognition and the control of robots or air conditioners. It is then an interesting topic to analyze the behavior of fuzzy automata from a coalgebraic point of view. This paper models different types of fuzzy automata as coalgebras with a monad structure capturing fuzzy behavior. Based on the coalgebraic models, we can define a notion of fuzzy language and consider several versions of bisimulation for fuzzy automata. A group of combinators is defined to compose fuzzy automata of two branches: state transition and output function. A case study illustrates the coalgebraic models proposed and their composition.

2021

Towards a specification theory for fuzzy modal logic

Authors
Jain, M; Gomes, L; Madeira, A; Barbosa, LS;

Publication
2021 INTERNATIONAL SYMPOSIUM ON THEORETICAL ASPECTS OF SOFTWARE ENGINEERING (TASE 2021)

Abstract

2021

Generalised Quantum Tree Search

Authors
Sequeira, A; Santos, LP; Barbosa, LS;

Publication
2021 IEEE/ACM 2ND INTERNATIONAL WORKSHOP ON QUANTUM SOFTWARE ENGINEERING (Q-SE 2021)

Abstract

Supervised
thesis

2021

Foundations for quantum algorithms and complexity

Author
Carlos Eduardo Teixeira Tavares

Institution
UM

2021

Continuous-time Quantum Walks

Author
Jaime Pereira Santos

Institution
UM

2021

Evolving Dispatching Rules for Collaborative Environments throughGenetic Programming

Author
Rafael Hora Lopes

Institution
UP-FEUP

2021

Quantum Reinforcement Learning: Foundations, algorithms, applications

Author
André Manuel Resende Sequeira

Institution
UM

2021

Weighted Computations: semantics and program logics

Author
Leandro Rafael Moreira Gomes

Institution
UP-FCUP