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Publicações

Publicações por João Vinagre

2024

Flow Correlation Attacks on Tor Onion Service Sessions with Sliding Subset Sum

Autores
Lopes, D; Dong, JD; Medeiros, P; Castro, D; Barradas, D; Portela, B; Vinagre, J; Ferreira, B; Christin, N; Santos, N;

Publicação
31st Annual Network and Distributed System Security Symposium, NDSS 2024, San Diego, California, USA, February 26 - March 1, 2024

Abstract

2025

Budget-Constrained Collaborative Renewable Energy Forecasting Market

Autores
Gonçalves, C; Bessa, RJ; Teixeira, T; Vinagre, J;

Publicação
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY

Abstract
Accurate power forecasting from renewable energy sources (RES) is crucial for integrating additional RES capacity into the power system and realizing sustainability goals. This work emphasizes the importance of integrating decentralized spatio-temporal data into forecasting models. However, decentralized data ownership presents a critical obstacle to the success of such spatio-temporal models, and incentive mechanisms to foster data-sharing need to be considered. The main contributions are a) a comparative analysis of the forecasting models, advocating for efficient and interpretable spline LASSO regression models, and b) a bidding mechanism within the data/analytics market to ensure fair compensation for data providers and enable both buyers and sellers to express their data price requirements. Furthermore, an incentive mechanism for time series forecasting is proposed, effectively incorporating price constraints and preventing redundant feature allocation. Results show significant accuracy improvements and potential monetary gains for data sellers. For wind power data, an average root mean squared error improvement of over 10% was achieved by comparing forecasts generated by the proposal with locally generated ones.

2025

Generative AI and the Future of the Digital Commons: Five Open Questions and Knowledge Gaps

Autores
Noroozian, A; Aldana, L; Arisi, M; Asghari, H; Avila, R; Bizzaro, PG; Chandrasekhar, R; Consonni, C; Angelis, DD; Chiara, FD; Rio Chanona, Md; de Rosnay, MD; Eriksson, M; Font, F; Gómez, E; Guillier, V; Gutermuth, L; Hartmann, D; Kaffee, LA; Keller, P; Stalder, F; Vinagre, J; Vrandecic, D; Wasielewski, A;

Publicação
CoRR

Abstract

2025

Measuring the stability and plasticity of recommender systems

Autores
Lavoura, MJ; Jungnickel, R; Vinagre, J;

Publicação
CoRR

Abstract

2025

Data Access for Recommender Systems Research: leveraging the EU's Digital Services Act

Autores
Vinagre, J; Porcaro, L; Merisio, S; Purificato, E; Gómez, E;

Publicação
Proceedings of the Nineteenth ACM Conference on Recommender Systems, RecSys 2025, Prague, Czech Republic, September 22-26, 2025

Abstract

2025

Data Access under the EU Digital Services Act and its Impact on User Modelling Research

Autores
Purificato, E; Boratto, L; Vinagre, J;

Publicação
Adjunct Proceedings of the 33rd ACM Conference on User Modeling, Adaptation and Personalization, UMAP Adjunct 2025, New York City, NY, USA, June 16-19, 2025

Abstract

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