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Latest News

Joining University of Lisbon as Assistant Professor

I'm very happy to join - starting in February - the Faculty of Sciences, University of Lisbon as Assistant Professor!

Two Best Paper Nominees at ASSETS

Our papers on CaBot, an autonomous navigation robot for Blind People and on non-visual word completion interfaces were in the best paper nominees at ASSETS 2019.

About Me

I am an Assistant Professor at Faculdade de Ciências da Universidade de Lisboa. Before, I was a postdoc at Carnegie Mellon University and INESC-ID. I received my PhD from Instituto Superior Técnico (IST), University of Lisbon (UL). My main research interests include Human-Computer Interaction, Non-Visual Interaction and Accessible Computing. My research focuses on supporting independent navigation of people with visual impairments using either real-world navigation assistance or virtual navigation to gain prior knowledge of the environment. Other research interests regard Intelligent Virtual Agents and Information Visualization. I hold BSc and MSc degrees in Computer Science from IST, UTL.

Check out my Master Thesis Proposals for the year 2021/2022!

Publications

2020 - 2019 - 2018 - 2017 - 2016 - 2015 - 2014 - 2013 - 2012


2020

Collaborative Tabletops for Blind People: The Effect of Auditory Design on Workspace Awareness Best Paper Award

Daniel Mendes, Sofia Reis, João Guerreiro , Hugo Nicolau

ISS 2020: Proceedings of the ACM on Human-Computer Interaction: ACM Conference on Interactive Surfaces and Spaces

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Open Challenges of Blind People using Smartphones

André Rodrigues, Hugo Nicolau, Kyle Montague, João Guerreiro and Tiago Guerreiro

IJHCI 2020: International Journal of Human Computer Interaction, 2020

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From skeuomorphism to flat design: age-related differences in performance and aesthetic perceptions

Inês Urbano, João Guerreiro, Hugo Nicolau

BIT 2020: Behaviour and Information Technology, 2020

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Investigating the Opportunities for Technologies to Enhance QoL with Stroke Survivors and their Families

Inês S. Silva, João Guerreiro, Marlene Rosa, Joana Campos, Augusto Pascoal, Sofia Pinto, Hugo Nicolau

CHI 2020: Proceedings of the International Conference on Human Factors in Computing Systems. Honululu, Hawaii, USA, 2020

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Smartphone-Based Assistance for Blind People to Stand in Lines

Seita Kayukawa, Hironobu Takagi, João Guerreiro, Shigeo Morishima and Chieko Asakawa

CHI 2020: Adjunct Proceedings of the International Conference on Human Factors in Computing Systems. Honululu, Hawaii, USA, 2020

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Virtual Navigation for Blind People: Transferring Route Knowledge to the Real-World

João Guerreiro, Daisuke Sato, Dragan Ahmetovic, Eshed Ohn-Bar, Kris Kitani and Chieko Asakawa

IJHCS 2020 - International Journal of Human Computer Studies

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2019

CaBot: Designing and Evaluating an Autonomous Navigation Robot for Blind People Best Paper Nominee

João Guerreiro, Daisuke Sato, Saki Asakawa, Huixu Dong, Kris Kitani and Chieko Asakawa

ASSETS 2019 - 21st International ACM SIGACCESS Conference on Computers and Accessibility, Pittsburgh, PA, US 2019

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The Design Space of Nonvisual Word Completion Best Paper Nominee

Hugo Nicolau, André Rodrigues, André Santos, Tiago Guerreiro, Kyle Montague, and João Guerreiro

ASSETS 2019 - 21st International ACM SIGACCESS Conference on Computers and Accessibility, Pittsburgh, PA, US 2019

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NavCog3 in the Wild: Large-Scale Blind Indoor Navigation Assistant with Semantic Features

Daisuke Sato, Uran Oh, João Guerreiro, Dragan Ahmetovic, Kakuya Naito, Hironobu Takagi, Kris Kitani and Chieko Asakawa

TACCESS 2019 - ACM Transactions on Accessible Computing

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Deep Learning Compensation of Rotation Errors during Navigation Assistance for People with Visual Impairments or Blindness

Dragan Ahmetovic, Sergio Mascetti, Cristian Bernareggi, João Guerreiro, Uran Oh, and Chieko Asakawa

TACCESS 2019 - ACM Transactions on Accessible Computing

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Airport Accessibility and Navigation Assistance for People with Visual Impairments

João Guerreiro, Dragan Ahmetovic, Daisuke Sato, Kris Kitani and Chieko Asakawa

CHI 2019: Proceedings of the International Conference on Human Factors in Computing Systems. Glasgow, Scotland, UK, 2019

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BBeep: A Sonic Collision Avoidance System for Blind Travellers and Nearby Pedestrians

Seita Kayukawa, Keita Higuchi, João Guerreiro, Shigeo Morishima , Yoichi Sato, Kris Kitani and Chieko Asakawa

CHI 2019: Proceedings of the International Conference on Human Factors in Computing Systems. Glasgow, Scotland, UK, 2019

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Hacking Blind Navigation

João Guerreiro, Hernisa Kacorri, Jeffrey Bigham, Ed Cutrell, Daisuke Sato, Dragan Ahmetovic and Chieko Asakawa

CHI 2019: Adjunct Proceedings of the International Conference on Human Factors in Computing Systems. Glasgow, Scotland, UK, 2019

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Grand Challenges in Accessible Maps

Jon Froehlich, Anke Brock, Anat Caspi, João Guerreiro, Kotaro Hara, Reuben Kirkham, Johannes Schöning and Benjamin Tannert

ACM Interactions, 2019

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An Independent and Interactive Museum Experience for Blind People

Saki Asakawa, João Guerreiro, Daisuke Sato, Hironobu Takagi, Dragan Ahmetovic, Desi Gonzalez, Kris Kitani and Chieko Asakawa

W4A 2019: Proceedings of the Web for All Conference. San Francisco, USA, 2019

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Impact of Expertise on Interaction Preferences for Navigation Assistance of Visually Impaired Individuals Best Paper Award

Dragan Ahmetovic, João Guerreiro, Eshed Ohn-Bar, Kris Kitani and Chieko Asakawa

W4A 2019: Proceedings of the Web for All Conference. San Francisco, USA, 2019

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AudioFunctions.web: Multimodal Exploration of Mathematical Function Graphs Tenon Accessibility Challenge Delegates Award

Dragan Ahmetovic, Cristian Bernareggi, João Guerreiro, Sergio Mascetti, Anna Capietto

W4A 2019: Proceedings of the Web for All Conference. San Francisco, USA, 2019

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2018

Variability in Reactions to Instructional Guidance During Smartphone-Based Assisted Navigation of Blind Users

Eshed Ohn-Bar, João Guerreiro, Kris Kitani and Chieko Asakawa

IMWUT (UbiComp) 2018 - Interactive, Mobile, Wearable and Ubiquitous Technologies, Singapore 2018

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The Present and Future of Museum Accessibility for People with Visual Impairments

Saki Asakawa, João Guerreiro, Dragan Ahmetovic, Kris Kitani and Chieko Asakawa

ASSETS 2018 - 20th International ACM SIGACCESS Conference on Computers and Accessibility, Galway, Ireland, 2018

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Modeling Expertise in Assistive Navigation Interfaces for Blind People

Eshed Ohn-Bar, João Guerreiro, Dragan Ahmetovic, Kris Kitani and Chieko Asakawa

IUI 2018 - International ACM Conference on Intelligent User Interfaces. Tokyo, Japan, 2018

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How Context and User Behavior Affect Indoor Navigation Assistance for Blind People

João Guerreiro, Eshed Ohn-Bar, Dragan Ahmetovic, Kris Kitani and Chieko Asakawa

W4A 2018 - International Cross-Disciplinary Conference on Web Accessibility. Lyon, France, 2018

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SIG: Making Maps Accessible and Putting Accessibility in Maps

Anke Brock, Jon Froehlich, João Guerreiro, Benjamin Tannert, Anat Caspi, Johannes Schöning and Steve Landau

CHI 2018: Adjunct Proceedings of the International Conference on Human Factors in Computing Systems. Montreal, Canada, 2018

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2017

Virtual Navigation for Blind People: Building Sequential Representations of the real-world

João Guerreiro, Dragan Ahmetovic, Kris Kitani and Chieko Asakawa

ASSETS 2017 - 19th International ACM SIGACCESS Conference on Computers and Accessibility. Baltimore, MD, US, 2017

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In-context QA to Support Blind People Using Smartphones

André Rodrigues, Kyle Montague, Hugo Nicolau, João Guerreiro and Tiago Guerreiro

ASSETS 2017 - 19th International ACM SIGACCESS Conference on Computers and Accessibility. Baltimore, MD, US, 2017

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2016

Enhancing Blind People's Information Scanning with Concurrent Speech

João Guerreiro

PhD Dissertation, University of Lisbon, Lisboa, Portugal, 2016

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Towards Screen Readers with Concurrent Speech: Where to Go Next?

João Guerreiro

SIGACCESS Newsletter(115) June, 2016

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Towards Inviscid Text-Entry for Blind People through Non-Visual Word Prediction Interfaces

Kyle Montague, João Guerreiro, Hugo Nicolau, Tiago Guerreiro, André Rodrigues and Daniel Gonçalves

CHI 2016 Workshop on Inviscid Text Entry and Beyond. San Jose, USA, 2016

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Scanning for Digital Content: How Blind and Sighted People Perceive Concurrent Speech

João Guerreiro and Daniel Gonçalves

TACCESS 2016 - ACM Transactions on Accessible Computing (Vol 8, Issue 1, Article 2), January 2016

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2015

Blind People Interacting with Large Touch Surfaces: Strategies for One-handed and Two-handed Exploration Best Paper Award

Tiago Guerreiro, Kyle Montague, João Guerreiro, Rafael Nunes, Hugo Nicolau and Daniel Gonçalves

ITS 2015 - ACM International Conference on Interactive Tabletops and Surfaces. Madeira, Portugal, 2015

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Faster Text-to-Speeches: Enhancing Blind People's Information Scanning with Faster Concurrent Speech

João Guerreiro and Daniel Gonçalves

ASSETS 2015 - 17th International ACM SIGACCESS Conference on Computers and Accessibility. Lisbon, Portugal, 2015

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TabLETS Get Physical: Non-Visual Text Entry on Tablet Devices

João Guerreiro, André Rodrigues, Kyle Montague, Tiago Guerreiro, Hugo Nicolau and Daniel Gonçalves

CHI 2015 - ACM SIGCHI Conference on Human Factors in Computing Systems. Seoul, Korea, 2015

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2014

Text-to-Speeches: Evaluating the Perception of Concurrent Speech by Blind People

João Guerreiro and Daniel Gonçalves

ASSETS 2014 - 16th International ACM SIGACCESS Conference on Computers and Accessibility. Rochester, USA, 2014

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The Use of Concurrent Speech to Enhance Blind People's Scanning for Relevant Information

João Guerreiro

Doctoral Consortium at ASSETS 2014 - 16th International ACM SIGACCESS Conference on Computers and Accessibility. Rochester, USA, 2014

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B#: Chord-based Correction for Multitouch Braille Input Best Paper Award

Hugo Nicolau, Kyle Montague, Tiago Guerreiro, João Guerreiro, Vicki Hanson

CHI 2014 - ACM SIGCHI Conference on Human Factors in Computing Systems. Toronto, Canada, 2014

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Beyond Post-It: Structured Multimedia Annotations for Collaborative VEs

João Guerreiro, Daniel Medeiros, Daniel Mendes, Maurício Sousa, Joaquim Jorge, Alberto Raposo, Ismael Santos

ICAT-EGVE 2014 - International Conference on Artificial Reality and Telexistence - Eurographics Symposium on Virtual Environments. Bremen, Germany 2014

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Anotações Multimédia Estruturadas para Ambientes Virtuais Colaborativos In Portuguese

João Guerreiro, Daniel Medeiros, Joaquim Jorge, Alberto Raposo, Ismael Santos

EPCG 2014 - Encontro Português de Computação Gráfica. Leiria, Portugal, 2014

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2013

Augmenting Braille Input through Multitouch Feedback

Hugo Nicolau, Kyle Montague, João Guerreiro, Diogo Marques, Tiago Guerreiro, Craig Stewart, Vicki Hanson

UIST 2013 Adjunct - 26th ACM Symposium on User Interface Software and Technology, St. Andrews, United Kingdom, 2013

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The Today and Tomorrow of Braille Learning

João Guerreiro, Daniel Gonçalves, Diogo Marques, Tiago Guerreiro, Hugo Nicolau, Kyle Montague

ASSETS 2013 - 15th International ACM SIGACCESS Conference on Computers and Accessibility. Bellevue, USA, 2013

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UbiBraille: Designing and Evaluating a Vibrotactile Braille-Reading Device

Hugo Nicolau, João Guerreiro, Tiago Guerreiro and Luís Carriço

ASSETS 2013 - 15th International ACM SIGACCESS Conference on Computers and Accessibility. Bellevue, USA, 2013

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Using Simultaneous Audio Sources to Speed-Up Blind People's Web Scanning Google Student Award

João Guerreiro

Google Student Award at the International Cross-Disciplinary Conference on Web Accessibility (W4A), Rio de Janeiro, Brazil, 2013

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Blind People Interacting with Mobile Social Applications: Open Challenges

João Guerreiro and Daniel Gonçalves

MobAcc 2013 - Mobile Accessibility Workshop at CHI, Paris, France, 2013

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Stressing the Boundaries of Mobile Accessibility

Hugo Nicolau, João Guerreiro and Tiago Guerreiro

MobAcc 2013 - Mobile Accessibility Workshop at CHI, Paris, France, 2013

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"Tell Me What I Want to Know!": The Effect of Relationship Closeness on the Relevance of Profile Attributes

João Guerreiro and Daniel Gonçalves

HT 2013 - ACM Conference on Hypertext and Social Media, Paris, France, 2013

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Towards a Fair Comparison between Name Disambiguation Approaches

João Guerreiro, Daniel Gonçalves and David Martins de Matos

OAIR 2013 - Open research Areas in Information Retrieval Conference, Lisbon, Portugal, 2013

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Empowering the Search of One's Social Directory

João Guerreiro, Daniel Gonçalves and Helena Sofia Pinto

Interação 2013 - Proceedings of the Portuguese Conference on Human-Computer Interaction, 2013

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SocialVis: Aumentar o Conhecimento da Rede Social através de Visualização de Informação In Portuguese

Sofia Penaforte, João Guerreiro and Daniel Gonçalves

Interação 2013 - Proceedings of the Portuguese Conference on Human-Computer Interaction, 2013

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2012

"Ten Things I Want to Know About You": Unveiling Friends' Attribute Relevance

João Guerreiro and Daniel Gonçalves

ECCE 2012 - European Conference on Cognitive Ergonomics, Edinburgh, Scotland, August, 2012

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Visualiz'em: "Show me more about him!"

João Guerreiro and Daniel Gonçalves

AVI 2012 - International Working Conference in Advanced Visual Interfaces, Capri Island, Italy, May, 2012

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PersonalWeb: An Extensible Framework to Recommend Web and Personal Information

João Guerreiro, Juliana Gomes and Daniel Gonçalves

Intelligent User Interfaces (IUI) 2012 workshop on Context-Awareness in Retrieval and Recommendation, Lisbon, Portugal, February, 2012

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2010

Surpassing Farley Files: Opportunities and Challenges on Obtaining Personally Relevant Information

João Guerreiro, Tiago Guerreiro, Daniel Gonçalves

MobileHCI 2010: 12th International Conference on Human-Computer Interaction with Mobile Devices and Services. Lisboa, Portugal, September, 2010

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Relating Personally Relevant Social Information from Heterogeneous Sources

João Guerreiro, Tiago Guerreiro, Daniel Gonçalves

UDISW 2010 - ACM IUI Workshop on User Data Interoperability in the Social Web. Hong Kong, China, February, 2010

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2009

GeniusPhone: Extracting and Relating Relevant Personal Information

João Guerreiro, Tiago Guerreiro, Daniel Gonçalves

Recpad 2009: Actas da 15ª Conferência Portuguesa de Reconhecimento de Padrões. Aveiro, Portugal, October, 2009

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GeniusPhone: A Personal Companion for Everyday Situations

João Guerreiro, Tiago Guerreiro, Daniel Gonçalves

17º EPCG - Actas do 17° Encontro Português de Computação Gráfica. Covilhã, Portugal, Outubro, 2009

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