Trust Evaluation of a System for an Activity

Alhadad, Nagham; Serrano-Alvarado, Patricia; Busnel, Yann; Lamarre, Philippe

doi:10.1007/978-3-642-40343-9_3

Cited by 4 publications

(12 citation statements)

References 14 publications

(13 reference statements)

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“…Trustworthiness has several interpretations, but one that seems to be well accepted is that it is related to the assurance the system will perform as expected (e.g., [1,13,15]). In this sense, trustworthiness can be presented as a more complex metric that builds on top of the operativeness metric, using a well defined methodology to select the actions tested in that metric.…”

Section: Discussionmentioning

confidence: 99%

“…If one action is not reported, or it is not possible to verify (e.g., deceptive or inconsistent information provided as output), the entire test fails. In particular, if the set of actions A contains k actions, and the number of actions that can be verified is represented by n, the result of test T A can be expressed as shown in Equation (1). The result of the operativeness metric O is the tuple of all actions tested and the result of the test, as shown in Equation (2).…”

Section: Operativeness Validitymentioning

confidence: 99%

“…Supported by FNR/AFR project 7842804 TYPAMED in the European Union 1 . In this context, transparency is intended to guarantee that the systems are processing personal data in a lawful and fair manner.…”

Section: Introductionmentioning

confidence: 99%

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Modelling Metrics for Transparency in Medical Systems

Bartolini¹,

Lenzini²

2017

Trust, Privacy and Security in Digital Business

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Abstract. Transparency, a principle advocated by the General Data Protection Regulation, is usually defined in terms of properties such as availability, auditability and accountability and for this reason it is not straightforwardly measurable. In requirement engineering, measuring a quality is usually implemented by defining a set of metrics for its composing properties, but conventional approaches offer little help to achieve this task for transparency. We therefore review requirements for availability, auditability and accountability and, with the help of a meta-model used to describe non-functional properties, we discuss and advance a set of metrics for them. What emerges from this study is a better justified and comprehensive tool which we apply to measure the level of transparency in medical data-sharing systems.

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Section: Discussionmentioning

confidence: 99%

Section: Operativeness Validitymentioning

confidence: 99%

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Modelling Metrics for Transparency in Medical Systems

Bartolini¹,

Lenzini²

2017

Trust, Privacy and Security in Digital Business

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“…In SOCIOTRUST [4], a graph-based trust approach based on probability theory to evaluate trust in a system for an activity, the problem of dependent paths is solved using conditional probability. In SOCIOTRUST, trust values are considered as the probability by which a trustor believes that a trustee behaves as expected [13].…”

Section: Graph-based Trust Approachmentioning

confidence: 99%

“…In a former work, we proposed SOCIOTRUST, an approach to evaluate trust based on probability theory [4]. In this paper, we aim to take advantage of the benefits of subjective logic and we present SUBJECTIVETRUST, an approach to evaluate trust in distributed system architectures that relies on subjective logic.…”

Section: Introductionmentioning

confidence: 99%

Trust Evaluation of a System for an Activity with Subjective Logic

Alhadad

Busnel

Serrano-Alvarado

et al. 2014

Lecture Notes in Computer Science

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Abstract. Recently, trust emerged as a momentous aspect to evaluate resources, services or persons. In our work, the trust notion focuses on a system as a whole and from the point of view of a particular user to do a particular digital activity as editing a document, mailing, chatting, etc. Our general goals are (i) to enable users to have a personal comparison of applications allowing them to do an activity such that they can choose the one satisfying their personal expectations and (ii) to know how trustworthy their system is to do a particular activity (all applications together). We consider a system as a graph composed of paths where the source is a person and the target is a final application or data. We consider that trust in a system depends on its architecture and we identify two problems (i) how to evaluate trust in a graph having dependent paths i.e., paths having common nodes, and (ii) how to express and deal with uncertainty in evaluating trust in a system. Concerning the first problem, trust approaches based on graphs have been proposed in the domain of social networks. Their solution for dependent paths is either removing paths or just choosing one of them what causes loss of information. Considering the second problem, subjective logic emerged to express trust as a subjective opinion with a degree of uncertainty. In this paper we present SUBJECTIVETRUST, an approach that relies on subjective logic to evaluate trust in distributed systems. It proposes two solutions to treat dependent paths and takes into account the shape of the system architecture in trust evaluation. We analyze SUBJECTIVETRUST in a series of experiments that show its accuracy.

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System Modeling and Trust Evaluation of Distributed Systems

Alhadad

Serrano-Alvarado

Busnel

et al. 2015

Transactions on Large-Scale Data- And Knowledge-Centered Systems XXII

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Nowadays, digital systems are connected through complex architectures. These systems involve persons, physical and digital resources such that we can consider that a system consists of elements from two worlds, the social world and the digital world, and their relations. Users perform activities like chatting, buying, sharing data, etc. Evaluating and choosing appropriate systems involve aspects like functionality, performance, QoS, ease of use, or price. Recently, trust appeared as another key factor for such an evaluation. In this context, we raise two issues, (i) how to formalize the entities that compose a system and their relations for a particular activity? and (ii) how to evaluate trust in a system for this activity? This work proposes answers to both questions. On the one hand, we propose SOCIOPATH, a metamodel based on first order logic, that allows to model a system considering entities of the social and digital worlds and their relations. On the other hand, we propose two approaches to evaluate trust in systems, namely, SOCIOTRUST and SUBJECTIVETRUST. The former is based on probability theory to evaluate users' trust in systems for a given activity. The latter is based on subjective logic to take into account uncertainty in trust values.

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Trust Evaluation of a System for an Activity

Cited by 4 publications

References 14 publications

Modelling Metrics for Transparency in Medical Systems

Modelling Metrics for Transparency in Medical Systems

Trust Evaluation of a System for an Activity with Subjective Logic

System Modeling and Trust Evaluation of Distributed Systems

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