Igor Matias 🧠🤖 (Computer Science, Health, AI)

Media appearances

Estudo de cientista português usa IA para detetar de forma precoce declínio cognitivo

Interview with SIC and SIC Notícias (in Portuguese) - Portugal's most-watched TV channel In Portugal Interview at: https://sicnoticias.pt/especiais/inteligencia-artificial/2026-01-25-video-estudo-de-cientista-portugues-usa-ia-para-detetar-de-forma-precoce-declinio-cognitivo-57e3ccf2...

25 January, 2026

Journal

Digital biomarkers for brain health: passive and continuous assessment from wearable sensors

Abstract: Continuous and scalable monitoring of cognition and affective states is critical for the early detection of...

14 January, 2026

Journal

Model-Twin Randomization (MoTR) for Estimating the Recurring Individual Treatment Effect

Abstract: Temporally dense single-person “small data” have become widely available thanks to mobile apps and wearable sensors....

13 November, 2025

Research Talks

From wearables to warnables: Rethinking mental health monitoring at scale

At Geneva Aging Series XIII, Morges, Switzerland, September 16-18, 2025. Igor Matias1 (September 2025)1University of Geneva, Switzerland

18 September, 2025

General Public Talk

Quando o Corpo Fala Primeiro: Prever alterações cognitivas e emocionais com Inteligência Artificial e Tecnologia do Quotidiano

Talk at the closing event of the Iberian project "Horizontes Partilhados." At Guarda, Portugal. Image by ADM...

1 July, 2025

Research Talks

Show me no more! Forecasting affective state and cognition using ubiquitous wearable technology

Talk at the LIVES day 2025. At Lausanne, Switzerland.

3 June, 2025

General Public Talk

Inteligência Artificial e o Dia a Dia: No caminho para o pré‑diagnóstico da doença de Alzheimer

Talk at the Feira da Saúde e Social, 3ª edição. At Rapoula, Portugal.

24 May, 2025

Conference

You Are Not You When You Are Tired: The Effects of Ego Depletion on Stress Levels Reporting

Abstract: Ego depletion refers to the idea that self-control and decision-making abilities become depleted or diminished after...

23 April, 2025

Workshop Organized

Pervasive Digital Health: The Road to Truly Personalized Healthcare

Workshop at the Hasso-Plattner Institute's Digital Health Innovation Forum 2025. In Potsdam, Germany. --- Workshop description: This...

27 March, 2025

Conference

Use of personal mobile technologies for peer-based assessment of stress: a systematic literature review

Abstract: The use of personal mobile technologies has grown in recent years, providing a method for collecting...

19 March, 2025

Poster

Early detection of Alzheimers disease using digital biomarkers insights from the Providemus alz project

At Biomarkers of Aging Conference, Boston, MA, USA, November 2024 Igor Matias1,2, Matthias Kliegel2, Katarzyna Wac1, University...

1 November, 2024

General Public Talk

TerapIA do futuro: o Psicólogo Omnipresente?

Talk at the X Ciclo de Saúde Mental do Fundão. At Fundão, Portugal.

26 October, 2024

Workshop Organized

Navigating Digital Health Technologies: From Data Collection to Analysis

Workshop at the International Society for Quality of Life Research Conference 2024. In Cologne, Germany. --- Workshop...

13 October, 2024

Conference

Providemus alz: Ubiquitous screening of Preclinical Alzheimer’s Disease with consumer-grade Technologies

Abstract: This article introduces a study to facilitate the early detection of preclinical Alzheimer’s disease using consumer-grade...

5 October, 2024

Poster

Assessing Cognitive Performance fluctuations using passive continuous Wearable Data

At Geneva Aging Series XII, Morges, Switzerland, September 2024 Igor Matias1,2, Matthias Kliegel2, Katarzyna Wac1, University of...

24 September, 2024

Media appearances

O investigador fundanense que tenta antecipar-se à Alzheimer

Interview with Jornal do Fundão (in Portuguese). In Portugal. Interview (partially) at: https://www.jornaldofundao.pt/saude/o-investigador-fundanense-que-tenta-antecipar-se-a-alzheimer Full interview in the printed...

21 August, 2024

Conference

Modelling Users for User Modelling: Dynamic Personas for Improved Personalisation in Digital Behaviour Change

Abstract: Behaviour change, crucial in health interventions, demands an understanding of the end user’s psychological, social, and...

28 June, 2024

Conference

Behaviour Models-Enriched User Personas for Digital Behaviour Change Interventions

Abstract: User Persona is a structured Interaction Design method for representing a group of users as conceptual...

26 June, 2024

Poster

Providemus alz: Paving the way towards a ubiquitous and passive screening of Alzheimer’s disease

At Alzheimer's Disease International Conference 2024, Krakow, Poland, April 2024. Igor Matias1, Matthias Kliegel1, Katarzyna Wac1 1University...

1 May, 2024

Media appearances

Detetar Alzheimer vinte anos antes dos primeiros sinais

Interview with SIC and SIC Notícias (in Portuguese) - Portugal's most-watched TV channel. In Portugal. Interview at:...

23 March, 2024

General Public Talk

Spes Libertatis invited guest

Interview by the Mais Liberdade YouTube channel. Portugal.

27 February, 2024

General Public Talk

Coding for a Cure: How AI is and will be unraveling the mysteries of Onco‐Hematology

Talk as a Takeda speaker at the HemeXChange event hosted by Takeda Oncology. At Convento São Francisco,...

20 January, 2024

General Public Talk

Artificial Intelligence in the digital transition

Talk in Portuguese at the kick-off of the DIH 4 Global Automotive project. At Ceiia - Centre...

16 January, 2024

Media appearances

Inteligência artificial: “A moeda de duas faces”

Interview with Farmacêutico News (in Portuguese). At Porto, Portugal. https://www.youtube.com/watch?v=oZG4oDmPjZg Full access (requires registration): https://farmaceuticonews.pt/entrevista/item/1642-inteligência-artificial-a-moeda-de-duas-faces.html

24 November, 2023

General Public Talk

Development of Artificial Intelligence around the world: potential and challenges

Porto, Portugal. At XVI National Congress of the Portuguese Association of Hospital Pharmacists (https://www.apfh.pt/xvicongresso2023/). Image by APFH.

23 November, 2023

General Public Talk

Digital Health: Health Technology and Artificial Intelligence

Vitória, Espírito Santo, Brazil. At B-TECH Congress - III Congress of Technological Research in Business (https://fucape.br/btechcongress/).

23 November, 2023

General Public Talk

Development of Artificial Intelligence around the world: potential and challenges

Talk at the XVI National Congress of the Portuguese Association of Hospital Pharmacists. At Porto, Portugal. Image...

23 November, 2023

Workshop Organized

Introduction to Technology-Reported Outcomes for QoL research

Workshop at the International Society for Quality of Life Research Conference 2023. In Calgary, Alberta, Canada. ---...

18 October, 2023

General Public Talk

O ChatGPT tomou de assalto a sociedade em quatro meses

Talk open to the public (in Portuguese). At Instituto Politécnico da Guarda. Recording: https://www.youtube.com/watch?v=RZ6JxdzMXak Image by Instituto...

11 May, 2023

Media appearances

O ChatGPT tomou de assalto a sociedade em quatro meses

Entrevista ao Jornal SOL, em Português. (Portuguese interview to the newspaper SOL). https://sol.sapo.pt/artigo/797517/igor-matias-o-chatgpt-tomou-de-assalto-a-sociedade-em-quatro-meses

21 April, 2023

Conference

Dejà vu: Recurrent Neural Networks for health wearables data forecast

Abstract: Wearable devices are a useful and widely used source of continuous and temporal dependant data. In...

23 March, 2023

Research Talks

Data overdose: side effects and metabolism of big data in the 21st century

In "AI and Big Data in Healthcare" session, The University of Oklahoma Health Sciences Center, Oklahoma City,...

1 February, 2023

Conference

Behavioral Data Categorization for Transformers-based Models in Digital Health

Abstract: Transformers are recent deep learning (DL) models used to capture the dependence between parts of sequential...

16 November, 2022

Poster

Physical Activity may affect Sleep unexpectedly. Results from small data.

In ISOQOL 29th Annual Conference, Prague, Czech Republic, October 2022. Igor Matias1, Eric J. Daza2, Alexandre de...

31 October, 2022

Poster

Providemus alz: Giving you the power to foresee Alzheimer’s disease effortlessly

On Data Science Day, University of Geneva, Switzerland, September 15, 2022. Igor Matias1, Matthias Kliegel1, Katarzyna Wac1...

15 September, 2022

Journal

What possibly affects nighttime heart rate? Conclusions from N-of-1 observational data

Abstract: Heart rate (HR), especially at nighttime, is an important biomarker for cardiovascular health. It is known...

25 August, 2022

Poster

Fighting Alzheimer’s Disease Effortlessly

In CUSO Winter School, Champéry, Switzerland, January 31 - February 4, 2022. Igor Matias1, Matthias Kliegel1, Katarzyna...

24 January, 2022

Research Talks

Technology: your body’s seismometer

In UNIGE's Data Science Day round table "Beyond SDGs: measuring and forecasting for taking action", Geneva, Switzerland,...

25 August, 2021

Research Talks

Co-calibrating Short Term, Mixed-Methods Based Momentary Assessments for Physical and Psychological Outcomes with Long Term Quality of Life Outcomes in Older Adults: The coQoL Method

On UNIGE's Data Science Day, Geneva, Switzerland, September 16, 2021. Vlad Manea1, Igor Matias2, Katarzyna Wac1,2 1University of...

25 August, 2021

Research Talks

Co-calibrating Short Term, Mixed-Methods Based Momentary Assessments for Physical and Psychological Outcomes with Long Term Quality of Life Outcomes in Older Adults: An Evaluation of the coQoL Method

Abstract: Inactivity, lack of sleep, and poor nutrition predispose individuals to health risks. Momentary Patient-Reported Outcomes (PROs)...

5 July, 2021

Research Talks

“Know You (Self) Better”: N-of-1 Based Self-Examination Using Wearables And Self-Reported Behaviors For An Improved Well-Being

Abstract: N-of-1 randomized trials help better understand the effects of an intervention, e.g., behavioral changes in a...

20 April, 2021

Journal

Prediction of Atrial Fibrillation using artificial intelligence on Electrocardiograms: A systematic review

Abstract: Atrial Fibrillation (AF) is a type of arrhythmia characterized by irregular heartbeats, with four types, two...

5 December, 2020

Thesis

ECG based Prediction Model for Cardiac-Related Diseases using Machine Learning Techniques

Abstract: This dissertation presents research on the construction of predictive models for health conditions through the application...

23 July, 2020

Conference

Scaffolding students on connecting STEM and interaction design: Case study in Tallinn University Summer School

Abstract: Fusion multidisciplinary subjects in order to present a unique and complementary perspective may enhance and extend...

17 May, 2018

Conference

Towards a Fully Automated Bracelet for Health Emergency Solution

Abstract: Activity and health monitoring bracelets are currently a popular consumer electronic wearable, and several different manufacturers...

19 March, 2018