HMM-based Trust Model

Ehab ElSalamouny; Mogens Nielsen; Vladimiro Sassone

doi:10.1007/978-3-642-12459-4_3

HMM-based Trust Model

Ehab ElSalamouny, Mogens Nielsen, Vladimiro Sassone

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

Abstract

Probabilistic trust has been adopted as an approach to taking security sensitive decisions in modern global computing environments. Existing probabilistic trust frameworks either assume fixed behaviour for the principals or incorporate the notion of ‘decay' as an ad hoc approach to cope with their dynamic behaviour. Using Hidden Markov Models (HMMs) for both modelling and approximating the behaviours of principals, we introduce the HMM-based trust model as a new approach to evaluating trust in systems exhibiting dynamic behaviour. This model avoids the fixed behaviour assumption which is considered the major limitation of existing Beta trust model. We show the consistency of the HMM-based trust model and contrast it against the well known Beta trust model with the decay principle in terms of the estimation precision.

Originalsprog	Engelsk
Bogserie	Lecture Notes in Computer Science
Vol/bind	5983
Sider (fra-til)	21-35
Antal sider	15
ISSN	0302-9743
DOI	https://doi.org/10.1007/978-3-642-12459-4_3
Status	Udgivet - 2010
Begivenhed	6th International Workshop on Formal Aspects of Security and Trust. FAST 2009 - Eindhoven, Holland Varighed: 5 nov. 2010 → 6 nov. 2010

Konference

Konference	6th International Workshop on Formal Aspects of Security and Trust. FAST 2009
Land/Område	Holland
By	Eindhoven
Periode	05/11/2010 → 06/11/2010

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10.1007/978-3-642-12459-4_3

Citationsformater

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title = "HMM-based Trust Model",

abstract = "Probabilistic trust has been adopted as an approach to taking security sensitive decisions in modern global computing environments. Existing probabilistic trust frameworks either assume fixed behaviour for the principals or incorporate the notion of {\textquoteleft}decay' as an ad hoc approach to cope with their dynamic behaviour. Using Hidden Markov Models (HMMs) for both modelling and approximating the behaviours of principals, we introduce the HMM-based trust model as a new approach to evaluating trust in systems exhibiting dynamic behaviour. This model avoids the fixed behaviour assumption which is considered the major limitation of existing Beta trust model. We show the consistency of the HMM-based trust model and contrast it against the well known Beta trust model with the decay principle in terms of the estimation precision.",

author = "Ehab ElSalamouny and Mogens Nielsen and Vladimiro Sassone",

note = "Title of the vol.: Formal aspects in security and trust. Rev. selected papers. / ed. by Pierpaolo Degano, Joshua D. Guttman. ISBN: 3642124585; 9783642124587; 6th International Workshop on Formal Aspects of Security and Trust. FAST 2009 ; Conference date: 05-11-2010 Through 06-11-2010",

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doi = "10.1007/978-3-642-12459-4_3",

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AU - ElSalamouny, Ehab

AU - Nielsen, Mogens

AU - Sassone, Vladimiro

N1 - Title of the vol.: Formal aspects in security and trust. Rev. selected papers. / ed. by Pierpaolo Degano, Joshua D. Guttman. ISBN: 3642124585; 9783642124587

PY - 2010

Y1 - 2010

N2 - Probabilistic trust has been adopted as an approach to taking security sensitive decisions in modern global computing environments. Existing probabilistic trust frameworks either assume fixed behaviour for the principals or incorporate the notion of ‘decay' as an ad hoc approach to cope with their dynamic behaviour. Using Hidden Markov Models (HMMs) for both modelling and approximating the behaviours of principals, we introduce the HMM-based trust model as a new approach to evaluating trust in systems exhibiting dynamic behaviour. This model avoids the fixed behaviour assumption which is considered the major limitation of existing Beta trust model. We show the consistency of the HMM-based trust model and contrast it against the well known Beta trust model with the decay principle in terms of the estimation precision.

AB - Probabilistic trust has been adopted as an approach to taking security sensitive decisions in modern global computing environments. Existing probabilistic trust frameworks either assume fixed behaviour for the principals or incorporate the notion of ‘decay' as an ad hoc approach to cope with their dynamic behaviour. Using Hidden Markov Models (HMMs) for both modelling and approximating the behaviours of principals, we introduce the HMM-based trust model as a new approach to evaluating trust in systems exhibiting dynamic behaviour. This model avoids the fixed behaviour assumption which is considered the major limitation of existing Beta trust model. We show the consistency of the HMM-based trust model and contrast it against the well known Beta trust model with the decay principle in terms of the estimation precision.

U2 - 10.1007/978-3-642-12459-4_3

DO - 10.1007/978-3-642-12459-4_3

M3 - Journal article

SN - 0302-9743

VL - 5983

SP - 21

EP - 35

JO - Lecture Notes in Computer Science

JF - Lecture Notes in Computer Science

T2 - 6th International Workshop on Formal Aspects of Security and Trust. FAST 2009

Y2 - 5 November 2010 through 6 November 2010

ER -

HMM-based Trust Model

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