LASIGE

LASIGE is a research unit at the Faculty of Sciences of the University of Lisbon, in the field of Computer Science and Engineering. LASIGE gathers experts from several areas of the computing field, including artificial intelligence, machine learning, concurrency, distributed computing, embedded and cyber-physical systems, human-centred computing, information systems, information retrieval, security and privacy, software validation and verification, theory of computing, with an emphasis on computational complexity, and applied computing to life and medical sciences. LASIGE’s activities are organised around seven lines of excellence supported by key quality indicators.

Cyber‐Physical Systems

The LASIGE research line Cyber-Physical Systems (CPS) investigates the functional, human, trustworthiness and timing aspects of cyber-physical systems. This research line focuses on system solutions for offline verification and online monitoring of security- and safety-critical embedded real-time systems, mechanisms for efficient and adaptive interactions among entities in specific scenarios, protocols for autonomous driving scenarios, and visual analytics techniques and tools for exploring heterogeneous datasets from cyber-physical and smart systems, making them more transparent to end-users.

Data and Systems Intelligence

The research line on Data and Systems Intelligence (DSI) strives to devise innovative solutions for large‐scale data problems and complex systems. DSI intersects areas of recent high visibility and impact, such as machine learning and data mining, but also the general fields of artificial intelligence. This highly multidisciplinary research line aims at advancing research and knowledge in the recent flagship application and research domain of data science, web science, and network science.

Dependable and Secure Decentralized Systems

Dependable and Secure Decentralized Systems (DS2) investigates models, protocols and architectures that are suitable for applications with strong dependability requirements, namely applications that need to remain operational despite accidental faults or malicious attacks. The solutions being developed cover a diverse set of objectives, enforcing the prevention, detection and tolerance of failures. The kind of environments that are being contemplated include cloud deployments, highly dynamic and geographically distributed networks, mobile distributed computing, web systems and applications, smart grids and other critical infrastructures.

Health and Biomedical Informatics

LASIGE presents a longstanding record of research contributions in the area of Health & Biomedical Informatics (HBI), by providing innovative solutions for processing biological and medical data, and for supporting the discovery of new biomedical insights. This research line aims to encompass all the scientific work in LASIGE where informatics plays a fundamental role in creating new knowledge in life and health sciences.

Inclusive Human-Computer Interaction

LASIGE presents a longstanding record of research contributions in the area of accessible computing, in assessing, designing, and developing technologies for people with different abilities. The Inclusive Human-Computer Interaction (IHCI) research line gathers all the contributions that seek to evaluate or design interfaces for people with disabilities, older adults, or people suffering from situational impairments.

Reliable Software Systems

Reliable Software Systems (RSS) focuses on modelling techniques and formal analysis approaches to software system structure and behaviour. It aims at enhancing the software engineering practice and particularly the quality of the software.
Its activity ranges from developing theoretical models, languages and techniques to the development of tools that can be used in the real-world software development process, with a clear impact on the workflow of developers and the industry in general. RSS centers its attention on the verification and validation of software, increasing the confidence of developers in their code, especially in complex and error-prone scenarios, such as concurrent and distributed programs.

Theory of Computing

Theory of Computing (ToC) is dedicated to the foundational, theoretical study of computation: What is a computer? What is computation and where does it manifest? What are the capabilities and limitations of different kinds of computers? The method we use to study this question is the mathematical method: we use precise mathematical definitions to model various systems where computation (or a computation-like phenomenon) occurs, and then we use rigorous, deductive reasoning (i.e., mathematical proofs) to understand the behavior and properties of such systems.

RECENT

NEWS

LASIGE publishes in the Knowledge-Based Systems journal

13/03/2025

The paper “Enhancing cross-encoders using knowledge graph hierarchy for medical entity linking in zero- and few-shot scenarios”, co-authored by LASIGE members Pedro Ruas and Francisco M. Couto, along with Fernando Gallego and Francisco J. Veredas, has been published in Knowledge-Based Systems, a prestigious journal in artificial intelligence and data science. The paper introduces an innovative […]

APOSTLE’s exploratory project begins

12/03/2025

The APOSTLE exploratory project has begun, coordinated by Bernardo Ferreira, LASIGE integrated member, and aimed at developing new protocols for secure data processing and large-scale access. This project was awarded in the FCT 2023 Call for Exploratory Projects in all scientific fields, for 18 months from January 2025 to July 2026. More information about the […]

Andreia Mordido publishes at the ACM SIGPLAN’s blog PL Perspectives

10/03/2025

Andreia Mordido, LASIGE integrated member, and co-authors were invited to publish a blog post related to the paper “Parametric Subtyping for Structural Parametric Polymorphism” at the ACM SIGPLAN blog called PL Perspectives. In their blog post, the authors present the notion of parametricity for type constructors and illustrate the novel concept of parametric subtyping through examples, which […]

RECENT

TALKS

LASIGE WORKSHOP 2025

25/04/2025

RSS meetup: Rodrigo Bruno

09/04/2025

RSS meetup: Nuno Lopes

02/04/2025

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ONGOING

PROJECTS

APOSTLE

new Approaches for Secure Distributed Data Processing and Access

SAFEX

Security-enhancing framework for private media content exchange

I2DT

Intelligent Interoperable Digital Twins

HfPT

Health from Portugal

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Projects

PUBLICATIONS

Members

RECENT

PUBLICATIONS

Joel Samper, Bernardo Ferreira. SoK: Self-Generated Nudes over Private Chats: How Can Technology Contribute to a Safer Sexting?. In 46th IEEE Symposium on Security and Privacy, 2025 [Biblios]

Daniel Ramos, Claudia Mamede, Kush Jain, Paulo Canelas, Catarina Gamboa, Claire Le Goues. Are Large Language Models Memorizing Bug Benchmarks?. In The Second International Workshop on Large Language Models for Code, 2025 [Biblios]

Joel Samper, Bernardo Ferreira. Leveraging remote attestation APIs for secure image sharing in messaging apps. In 20th European Dependable Computing Conference, 2025 [Biblios]

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SOFTWARE &

TOOLS

RT-PSS

Real-Time Proactive Secret Sharing Library for RTAI is an implementation of the Shamir’s secret sharing scheme and Herzberg’s proactive secret sharing...

SF4K

A web application to promote healthy eating in children from 2 to 6 years. It has the goal to study the...

T-CBIR

T-CBIR supports searching large scale encrypted image databases based on the images’ visual contents. T-CBIR leverages Searchable Symmetric Encryption (SSE) techniques,...

CONFIDENT

CONFIDENT is a toolchain for effective construction and evolution of REST APIs. CONFIDENT aims at supporting all phases of RESTful software...

Genodedup

GenoDedup is an algorithm that integrates efficient similarity-based deduplication and specialized delta-encoding for genome sequencing data. It increases data reduction gains...

DNA Privacy Detector

The DNA privacy detector is a method that systematically detects privacy-sensitive DNA segments coming directly from an input stream, using as...

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About LASIGE

LASIGE is a research and development unit at the Faculty of Sciences of the University of Lisbon, in the field of Computer Science and Engineering.

LASIGE has approximately 250 collaborators, including researchers holding a doctoral degree, PhD and MSc students and other junior researchers, project managers, and a team of system administrators. The current Director is Prof. Alysson Bessani.