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Trust and Reputation Smart Contracts for Explainable Recommendations

2020Book part Restricted access
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dc.contributor.authorLeal, Fátima
dc.contributor.authorVeloso, Bruno
dc.contributor.authorMalheiro, Benedita
dc.contributor.authorGonzález-Vélez, Horacio
dc.date.accessioned2020-06-25T10:35:21Z
dc.date.embargo2119
dc.date.issued2020
dc.description.abstractRecommendation systems are usually evaluated through accuracy and classification metrics. However, when these systems are supported by crowdsourced data, such metrics are unable to estimate data authenticity, leading to potential unreliability. Consequently, it is essential to ensure data authenticity and processing transparency in large crowdsourced recommendation systems. In this work, processing transparency is achieved by explaining recommendations and data authenticity is ensured via blockchain smart contracts. The proposed method models the pairwise trust and system-wide reputation of crowd contributors; stores the contributor models as smart contracts in a private Ethereum network; and implements a recommendation and explanation engine based on the stored contributor trust and reputation smart contracts. In terms of contributions, this paper explores trust and reputation smart contracts for explainable recommendations. The experiments, which were performed with a crowdsourced data set from Expedia, showed that the proposed method provides cost-free processing transparency and data authenticity at the cost of latency.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1007/978-3-030-45688-7_13pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/16001
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.relation.ispartofseriesAdvances in Intelligent Systems and Computing;
dc.relation.publisherversionhttp://dx.doi.org/10.1007/978-3-030-45688-7_13pt_PT
dc.subjectSmart contractspt_PT
dc.subjectTrust and reputationpt_PT
dc.subjectExplainable recommendationspt_PT
dc.subjectTransparencypt_PT
dc.subjectAuthenticitypt_PT
dc.subjectTraceabilitypt_PT
dc.titleTrust and Reputation Smart Contracts for Explainable Recommendationspt_PT
dc.typebook part
dspace.entity.typePublication
oaire.citation.endPage133pt_PT
oaire.citation.startPage124pt_PT
oaire.citation.titleWorldCIST 2020: Trends and Innovations in Information Systems and Technologiespt_PT
oaire.citation.volume1159pt_PT
person.familyNameBENEDITA CAMPOS NEVES MALHEIRO
person.givenNameMARIA
person.identifier.ciencia-id7A15-08FC-4430
person.identifier.orcid0000-0001-9083-4292
rcaap.rightsclosedAccesspt_PT
rcaap.typebookPartpt_PT
relation.isAuthorOfPublicationbabd4fda-654a-4b59-952d-6113eebbb308
relation.isAuthorOfPublication.latestForDiscoverybabd4fda-654a-4b59-952d-6113eebbb308

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