David Semedo

69 papers A* 14A 2B 3Misc 1Journal 27Unranked 20
YearRankTypeTitle / Venue / Authors
2026 J jnl
ALBA: A European Portuguese Benchmark for Evaluating Language and Linguistic Dimensions in Generative LLMs.
CoRR
Inês Vieira, Inês Calvo, Iago Paulo, James Furtado, Rafael Ferreira, Diogo Tavares, Diogo Glória-Silva, David Semedo, João Magalhães
2026 J jnl
AMALIA Technical Report: A Fully Open Source Large Language Model for European Portuguese.
CoRR
Afonso Simplício, Gonçalo Vinagre Martins, Miguel Moura Ramos, Diogo Tavares, Rafael Ferreira, Giuseppe Attanasio, Duarte M. Alves, Inês Calvo, Inês Vieira, Rui Guerra, James Furtado, Beatriz Canaverde, Iago Paulo, Vasco Ramos, Diogo Glória-Silva, Miguel Faria, Marcos V. Treviso, Daniel Gomes, Pedro Gomes, David Semedo, André F. T. Martins, João Magalhães
2026 A* conf
FineVAU: A Novel Human-Aligned Benchmark for Fine-Grained Video Anomaly Understanding.
AAAI
João Alexandre Cardeira Pereira, Vasco Lopes, João Neves, David Semedo
2026 J jnl
FineVAU: A Novel Human-Aligned Benchmark for Fine-Grained Video Anomaly Understanding.
CoRR
João Pereira, Vasco Lopes, João Neves, David Semedo
2026 — conf
VIGiA: Instructional Video Guidance via Dialogue Reasoning and Retrieval.
EACL (Findings)
Diogo Glória-Silva, David Semedo, João Magalhães
2026 J jnl
VIGiA: Instructional Video Guidance via Dialogue Reasoning and Retrieval.
CoRR
Diogo Glória-Silva, David Semedo, João Maglhães
2025 J jnl
Chain-of-Anomaly Thoughts with Large Vision-Language Models.
CoRR
Pedro Domingos, João Pereira, Vasco Lopes, João Neves, David Semedo
2025 A* conf
Language Models Can be Efficiently Steered via Minimal Embedding Layer Transformations.
EMNLP
Diogo Tavares, David Semedo, Alexander Rudnicky, João Magalhães
2025 A* conf
MUWS 2025: The 4th International Workshop on Multimodal Human Understanding for the Web and Social Media.
ACM Multimedia
Sherzod Hakimov, David Semedo, Eric Müller-Budack, Marc A. Kastner, Takahiro Komamizu
2025 J jnl
RedTWIZ: Diverse LLM Red Teaming via Adaptive Attack Planning.
CoRR
Artur Horal, Daniel Pina, Henrique Paz, Iago Paulo, João Soares, Rafael Ferreira, Diogo Tavares, Diogo Glória-Silva, João Magalhães, David Semedo
2025 A conf
Self-ReS: Self-Reflection in Large Vision-Language Models for Long Video Understanding.
ICME
João Pereira, Vasco Lopes, David Semedo, João Neves
2025 J jnl
Self-ReS: Self-Reflection in Large Vision-Language Models for Long Video Understanding.
CoRR
João Pereira, Vasco Lopes, David Semedo, João Neves
2025 — conf
Towards Event-Driven Evaluation of Surveillance Video Understanding Using Natural Language.
IbPRIA (2)
João Pereira, Vasco Lopes, João Neves, David Semedo
2025 — conf
Unveiling MicroRNA Biomarkers for Breast Cancer Sub-typing Using Discriminative Models.
EPIA (1)
João Mota, José Romano, Ana Rita Grosso, João Conde, Bárbara Mendes, David Semedo
2024 J jnl
GlórIA - A Generative and Open Large Language Model for Portuguese.
CoRR
Ricardo Lopes, João Magalhães, David Semedo
2024 — conf
GlórIA: A Generative and Open Large Language Model for Portuguese.
PROPOR (1)
Ricardo Lopes, João Magalhães, David Semedo
2024 — conf
Multi-trait User Simulation with Adaptive Decoding for Conversational Task Assistants.
EMNLP (Findings)
Rafael Ferreira, David Semedo, João Magalhães
2024 J jnl
Multi-trait User Simulation with Adaptive Decoding for Conversational Task Assistants.
CoRR
Rafael Ferreira, David Semedo, João Magalhães
2024 — conf
Plan-Grounded Large Language Models for Dual Goal Conversational Settings.
EACL (1)
Diogo Glória-Silva, Rafael Ferreira, Diogo Tavares, David Semedo, João Magalhães
2024 J jnl
Plan-Grounded Large Language Models for Dual Goal Conversational Settings.
CoRR
Diogo Glória-Silva, Rafael Ferreira, Diogo Tavares, David Semedo, João Magalhães
2024 A* conf
Show and Guide: Instructional-Plan Grounded Vision and Language Model.
EMNLP
Diogo Glória-Silva, David Semedo, João Magalhães
2024 J jnl
Show and Guide: Instructional-Plan Grounded Vision and Language Model.
CoRR
Diogo Glória-Silva, David Semedo, João Magalhães
2024 J jnl
Zero-Shot Action Recognition in Surveillance Videos.
CoRR
João Pereira, Vasco Lopes, David Semedo, João Neves
2023 B conf
Grounded Complex Task Segmentation for Conversational Assistants.
SIGDIAL
Rafael Ferreira, David Semedo, João Magalhães
2023 J jnl
Grounded Complex Task Segmentation for Conversational Assistants.
CoRR
Rafael Ferreira, David Semedo, João Magalhães
2023 A* conf
Learning to Ask Questions for Zero-shot Dialogue State Tracking.
SIGIR
Diogo Tavares, David Semedo, Alexander Rudnicky, João Magalhães
2023 A* conf
Rating Prediction in Conversational Task Assistants with Behavioral and Conversational-Flow Features.
SIGIR
Rafael Ferreira, David Semedo, João Magalhães
2023 J jnl
Rating Prediction in Conversational Task Assistants with Behavioral and Conversational-Flow Features.
CoRR
Rafael Ferreira, David Semedo, João Magalhães
2023 J jnl
TWIZ: The Wizard of Multimodal Conversational-Stimulus.
CoRR
Rafael Ferreira, Diogo Tavares, Diogo Silva, Rodrigo Valerio, João Bordalo, Inês Simões, Vasco Ramos, David Semedo, João Magalhães
2023 — conf
Task Conditioned BERT for Joint Intent Detection and Slot-Filling.
EPIA (1)
Diogo Tavares, Pedro Azevedo, David Semedo, Ricardo Gamelas Sousa, João Magalhães
2023 J jnl
Task Conditioned BERT for Joint Intent Detection and Slot-filling.
CoRR
Diogo Tavares, Pedro Azevedo, David Semedo, Ricardo Gamelas Sousa, João Magalhães
2023 B conf
The Wizard of Curiosities: Enriching Dialogues with Fun Facts.
SIGDIAL
Frederico Vicente, Rafael Ferreira, David Semedo, João Magalhães
2023 J jnl
The Wizard of Curiosities: Enriching Dialogues with Fun Facts.
CoRR
Frederico Vicente, Rafael Ferreira, David Semedo, João Magalhães
2022 A* conf
A Conversational Shopping Assistant for Online Virtual Stores.
ACM Multimedia
Tiago Fornelos, Pedro Valente, Rafael Ferreira, Diogo Tavares, Diogo Silva, David Semedo, João Magalhães, Nuno Correia
2022 — conf
Improving Face Liveness Detection Robustness with Deep Convolutional Generative Adversarial Networks.
EUSIPCO
Ruslan Padnevych, David Semedo, David Carmo, João Magalhães
2022 A conf
NewsImages: addressing the depiction gap with an online news dataset for text-image rematching.
MMSys
Andreas Lommatzsch, Benjamin Kille, Özlem Özgöbek, Yuxiao Zhou, Jelena Tesic, Cláudio Bartolomeu, David Semedo, Lidia Pivovarova, Mingliang Liang, Martha A. Larson
2022 J jnl
Open-domain conversational search assistants: the Transformer is all you need.
Inf. Retr. J.
Rafael Ferreira, Mariana Leite, David Semedo, João Magalhães
2022 — conf
Polite Task-oriented Dialog Agents: To Generate or to Rewrite?
WASSA@ACL
Diogo Silva, David Semedo, João Magalhães
2022 A* conf
TWIZ: The Multimodal Conversational Task Wizard.
ACM Multimedia
Rafael Ferreira, Diogo Silva, Diogo Tavares, Frederico Vicente, Mariana Bonito, Gustavo Gonçalves, Rui Margarido, Paula Figueiredo, Helder Rodrigues, David Semedo, João Magalhães
2022 Misc conf
Temporal Convolutional Networks for Robust Face Liveness Detection.
IbPRIA
Ruslan Padnevych, David Carmo, David Semedo, João Magalhães
2022 A* conf
Understanding News Text and Images Connection with Context-enriched Multimodal Transformers.
ACM Multimedia
Cláudio Bartolomeu, Rui Nóbrega, David Semedo
2021 A* conf
Assisting News Media Editors with Cohesive Visual Storylines.
ACM Multimedia
Gonçalo Marcelino, David Semedo, André Mourão, Saverio G. Blasi, João Magalhães, Marta Mrak
2021 J jnl
Assisting News Media Editors with Cohesive Visual Storylines.
CoRR
Gonçalo Marcelino, David Semedo, André Mourão, Saverio G. Blasi, Marta Mrak, João Magalhães
2021 J jnl
BERT Embeddings Can Track Context in Conversational Search.
CoRR
Rafael Ferreira, David Semedo, João Magalhães
2021 — conf
Contact-free Airport Borders with Biometrics-on-the-Move.
IWBF
David Semedo, David Carmo, Ruslan Padnevych, João Magalhães
2021 J jnl
Knowledge-driven Answer Generation for Conversational Search.
CoRR
Mariana Leite, Rafael Ferreira, David Semedo, João Magalhães
2021 — conf
NewsSeek-NOVA at MediaEval 2021: Context-enriched Multimodal Transformers For News Images Re-matching.
MediaEval
Cláudio Bartolomeu, Rui Nóbrega, David Semedo
2021 — conf
Open-Domain Conversational Search Assistant with Transformers.
ECIR (1)
Rafael Ferreira, Mariana Leite, David Semedo, João Magalhães
2021 J jnl
Open-Domain Conversational Search Assistant with Transformers.
CoRR
Rafael Ferreira, Mariana Leite, David Semedo, João Magalhães
2021 — conf
Towards Open-domain Vision and Language Understanding with Wikimedia.
WWW (Companion Volume)
David Semedo
2021 — conf
iFetch: Multimodal Conversational Agents for the Online Fashion Marketplace.
MuCAI @ ACM Multimedia
Ricardo Gamelas Sousa, Pedro Miguel Ferreira, Pedro Moreira Costa, Pedro Azevedo, João Paulo Costeira, Carlos Santiago, João Magalhães, David Semedo, Rafael Ferreira, Alexander I. Rudnicky, Alexander G. Hauptmann
2020 A* conf
Adaptive Temporal Triplet-loss for Cross-modal Embedding Learning.
ACM Multimedia
David Semedo, João Magalhães
2020 — —
Bridging Vision and Language over Time with Neural Cross-modal Embeddings
David Semedo
2020 — conf
NOVA at TREC 2020 Conversational Assistance Track.
TREC
Rafael Ferreira, David Semedo, João Magalhães
2019 B conf
A Benchmark of Visual Storytelling in Social Media.
ICMR
Gonçalo Marcelino, David Semedo, André Mourão, Saverio G. Blasi, Marta Mrak, João Magalhães
2019 J jnl
A Benchmark of Visual Storytelling in Social Media.
CoRR
Gonçalo Marcelino, David Semedo, André Mourão, Saverio G. Blasi, Marta Mrak, João Magalhães
2019 A* conf
Cross-Modal Subspace Learning with Scheduled Adaptive Margin Constraints.
ACM Multimedia
David Semedo, João Magalhães
2019 J jnl
Cross-Modal Subspace Learning with Scheduled Adaptive Margin Constraints.
CoRR
David Semedo, João Magalhães
2019 A* conf
Diachronic Cross-modal Embeddings.
ACM Multimedia
David Semedo, João Magalhães
2019 J jnl
Diachronic Cross-modal Embeddings.
CoRR
David Semedo, João Magalhães
2019 — conf
Dynamic-Keyword Extraction from Social Media.
ECIR (1)
David Semedo, João Magalhães
2018 — ed.
2018 TREC Video Retrieval Evaluation, TRECVID 2018, Gaithersburg, MD, USA, November 13-15, 2018
TRECVID
George Awad, Asad A. Butt, Keith Curtis, Yooyoung Lee, Jonathan G. Fiscus, Afzal Godil, David Joy, Andrew Delgado, Alan F. Smeaton, Yvette Graham, Wessel Kraaij, Georges Quénot, João Magalhães, David Semedo, Saverio G. Blasi
2018 — conf
Graph-based social media story linking.
TRECVID
Gonçalo Marcelino, David Semedo, João Magalhães
2018 — conf
Inferring User Gender from User Generated Visual Content on a Deep Semantic Space.
EUSIPCO
David Semedo, João Magalhães, Flávio Martins
2018 J jnl
Inferring User Gender from User Generated Visual Content on a Deep Semantic Space.
CoRR
David Semedo, João Magalhães, Flávio Martins
2018 — conf
TRECVID 2018: Benchmarking Video Activity Detection, Video Captioning and Matching, Video Storytelling Linking and Video Search.
TRECVID
George Awad, Asad A. Butt, Keith Curtis, Yooyoung Lee, Jonathan G. Fiscus, Afzal Godil, David Joy, Andrew Delgado, Alan F. Smeaton, Yvette Graham, Wessel Kraaij, Georges Quénot, João Magalhães, David Semedo, Saverio G. Blasi
2018 A* conf
Temporal Cross-Media Retrieval with Soft-Smoothing.
ACM Multimedia
David Semedo, João Magalhães
2018 J jnl
Temporal Cross-Media Retrieval with Soft-Smoothing.
CoRR
David Semedo, João Magalhães
2016 — conf
NovaSearch at ImageCLEFmed 2016 Subfigure Classification Task.
CLEF (Working Notes)
David Semedo, João Magalhães