Detalhes
Nome
Bruno Miguel VelosoCluster
InformáticaCargo
Investigador SéniorDesde
01 março 2013
Nacionalidade
PortugalCentro
Laboratório de Inteligência Artificial e Apoio à DecisãoContactos
+351220402963
bruno.m.veloso@inesctec.pt
2022
Autores
Leal, F; Veloso, B; Malheiro, B; Burguillo, JC; Chis, AE; Gonzalez Velez, H;
Publicação
INTEGRATED COMPUTER-AIDED ENGINEERING
Abstract
Explainable recommendations enable users to understand why certain items are suggested and, ultimately, nurture system transparency, trustworthiness, and confidence. Large crowdsourcing recommendation systems ought to crucially promote authenticity and transparency of recommendations. To address such challenge, this paper proposes the use of stream-based explainable recommendations via blockchain profiling. Our contribution relies on chained historical data to improve the quality and transparency of online collaborative recommendation filters - Memory-based and Model-based - using, as use cases, data streamed from two large tourism crowdsourcing platforms, namely Expedia and TripAdvisor. Building historical trust-based models of raters, our method is implemented as an external module and integrated with the collaborative filter through a post-recommendation component. The inter-user trust profiling history, traceability and authenticity are ensured by blockchain, since these profiles are stored as a smart contract in a private Ethereum network. Our empirical evaluation with HotelExpedia and Tripadvisor has consistently shown the positive impact of blockchain-based profiling on the quality (measured as recall) and transparency (determined via explanations) of recommendations.
2022
Autores
Pereira, CS; Durao, N; Moreira, F; Veloso, B;
Publicação
SUSTAINABILITY
Abstract
2022
Autores
Alcoforado, A; Ferraz, TP; Gerber, R; Bustos, E; Oliveira, AS; Veloso, BM; Siqueira, FL; Costa, AHR;
Publicação
COMPUTATIONAL PROCESSING OF THE PORTUGUESE LANGUAGE, PROPOR 2022
Abstract
2022
Autores
Davari, N; Pashami, S; Veloso, B; Fan, YT; Pereira, PM; Ribeiro, RP; Gama, J; Nowaczyk, S;
Publicação
ADVANCES IN INTELLIGENT DATA ANALYSIS XX, IDA 2022
Abstract
2022
Autores
Veloso, B; Leal, F; Malheiro, B;
Publicação
Lecture Notes in Networks and Systems
Abstract
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