17,549 Hits in 4.4 sec

Knowledge-based trust

Xin Luna Dong, Evgeniy Gabrilovich, Kevin Murphy, Van Dang, Wilko Horn, Camillo Lugaresi, Shaohua Sun, Wei Zhang
2015 Proceedings of the VLDB Endowment  
We call the trustworthiness score we computed Knowledge-Based Trust (KBT). On synthetic data, we show that our method can reliably compute the true trustworthiness levels of the sources.  ...  We then apply it to a database of 2.8B facts extracted from the web, and thereby estimate the trustworthiness of 119M webpages.  ...  The Knowledge-Based Trust (KBT) estimation task is to estimate the web source accuracies A = {Aw} given the observation matrix X = {X ewdv } of extracted triples. 2.2 Estimating the truth using a single-layer  ... 
doi:10.14778/2777598.2777603 fatcat:k5smdqyinrcgdaknwxmbtlytpy

Untangling the Antecedents and Covariates of E‐Commerce Trust: Institutional Trust vs. Knowledge‐Based Trust

Stephen Wingreen, Stephen Baglione
2005 Electronic Markets  
A b s t r a c t Through experimentation, we establish a causal relationship between structural assurance and both vendor trustworthiness (knowledge-based trust) and technology trustworthiness (institution-based  ...  We expand the definitions of structural assurance and institution-based trust to include the element of security measures employed by the marketplace technology.  ...  the presence of web icons and seals or knowledge of the security measures used by the ecommerce technology itself.  ... 
doi:10.1080/10196780500209010 fatcat:dofgdlv2vjcvbjrlcmskb2kdlu

A survey of trust management systems for online social communities – Trust modeling, trust inference and attacks

Yefeng Ruan, Arjan Durresi
2016 Knowledge-Based Systems  
We provide a survey of existing trust management systems for online social communities. We also list four types of attacks, and analyze existing systems' vulnerabilities.  ...  Trust can help participants in online social communities to make decisions; however, it is a challenge for systems to map trust into computational models because of its subjective property.  ...  Victor used bi-lattice based trust in [58] . Knowledge defect captures to what extent participants are certain about their estimations.  ... 
doi:10.1016/j.knosys.2016.05.042 fatcat:34ilydu4sjgjfoziqwx77ruoxu

A theoretical inter-organizational trust-based security model

2006 Knowledge engineering review (Print)  
This work examines the interplay of inter-personal and inter-organizational trust, two distinct but related concepts, through a theoretic inter-organizational trust-based security model for a multi-agent  ...  The inter-organizational trust-based model is an important contribution to the computational security community, as other open systems applications of a distributed or pervasive nature could adapt it and  ...  through the interaction and perception of B's trustworthiness (knowledge-based trust).  ... 
doi:10.1017/s0269888906000932 fatcat:bed6dqfvhjbjbnwttmuatcrply

Bottom-Up Extraction and Trust-Based Refinement of Ontology Metadata

Paolo Ceravolo, Ernesto Damiani, Marco Viviani
2007 IEEE Transactions on Knowledge and Data Engineering  
Then, we show how automatically generated assertions based on our bottom-up ontologies can be associated with a flexible degree of trust by nonintrusively collecting user feedback in the form of implicit  ...  Dynamic trust-based views on assertions automatically filter out imprecisions and substantially improve metadata quality in the long run.  ...  His research interests include ontology-based knowledge extraction and management, semantic Web technologies, trust/reputation, and soft computing.  ... 
doi:10.1109/tkde.2007.23 fatcat:vhzuwgttyvgmvaionung5vht2i

The Multidimensional Role of Trust in Enabling Creativity within Virtual Communities of Practice: A Theoretical Model Integrating Swift, Knowledge-Based, Institution-Based, and Organizational Trust

David A. Askay, April J. Spivack
2010 2010 43rd Hawaii International Conference on System Sciences  
based on tenure of its members.  ...  This manuscript responds by examining the role of trust, a well-known antecedent of creativity, within the context of virtual communities of practice.  ...  In addition to allowing for the exchange of new types of information, Web 2.0 technology has allowed for new sources of information.  ... 
doi:10.1109/hicss.2010.389 dblp:conf/hicss/AskayS10 fatcat:zonkccfb6fgltjn75fhprf2a44

Trust from the past: Bayesian Personalized Ranking based Link Prediction in Knowledge Graphs [article]

Baichuan Zhang, Sutanay Choudhury, Mohammad Al Hasan, Xia Ning, Khushbu Agarwal, Sumit Purohit, Paola Pesntez Cabrera
2016 arXiv   pre-print
Link prediction, or predicting the likelihood of a link in a knowledge graph based on its existing state is a key research task.  ...  We also show that for a given predicate the topological properties of the knowledge graph induced by the given predicate edges are key indicators of the link prediction performance of that predicate in  ...  Acknowledgement This work was supported by the Analysis In Motion Initiative at Pacific Northwest National Laboratory, which is operated by Battelle Memorial Institute, and by Mohammad Al Hasan's NSF CAREER  ... 
arXiv:1601.03778v2 fatcat:unzkb7ifbzdgtcni23k2qbxfzy

PeerTrust: Supporting Reputation-Based Trust for Peer-to-Peer Electronic Communities

Li Xiong, Ling Liu
2004 IEEE Transactions on Knowledge and Data Engineering  
One way to minimize threats in such communities is to use community-based reputations to help estimate the trustworthiness of peers.  ...  This paper presents PeerTrust-a reputation-based trust supporting framework, which includes a coherent adaptive trust model for quantifying and comparing the trustworthiness of peers based on a transaction-based  ...  The authors would like to thank Karl Aberer and Zoran Despotovic for the source code of P-Grid.  ... 
doi:10.1109/tkde.2004.1318566 fatcat:lpgkdfthx5dmpavr7dyvs6bt4q

Decision making matters: A better way to evaluate trust models

David Jelenc, Ramón Hermoso, Jordi Sabater-Mir, Denis Trček
2013 Knowledge-Based Systems  
of trust-based decisions.  ...  Based on our findings, we recommend to evaluate trust models independently of the decision making mechanism -and we also provide a method (and a tool) to do so.  ...  Acknowledgments The authors have been supported by the following  ... 
doi:10.1016/j.knosys.2013.07.016 fatcat:zhxqd5arc5bpnghsrostp3cc34

Enforcing Trust-Based Intrusion Detection in Cloud Computing Using Algebraic Methods

Amira Bradai, Hossam Afifi
2012 2012 International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery  
By statistically analyzing peer-to-peer trust distributed results, we apply trust-based intrusion detection to assess the trustworthiness and maliciousness.  ...  We analyze the sensitivity of false alarms with respect to the minimum trust threshold below where a node is considered malicious.  ...  Based on the previous indicators, the trustworthiness of machines can be estimated based on local observations of their behaviours.  ... 
doi:10.1109/cyberc.2012.38 dblp:conf/cyberc/BradaiA12 fatcat:uo2shdbfrffm3kotyfer3xu76y

Leveraging multiviews of trust and similarity to enhance clustering-based recommender systems

Guibing Guo, Jie Zhang, Neil Yorke-Smith
2015 Knowledge-Based Systems  
To address these issues, we develop a multiview clustering method through which users are iteratively clustered from the views of both rating patterns and social trust relationships.  ...  To accommodate (cold) users who cannot be clustered due to insufficient data, we propose a probabilistic method to derive a prediction from the views of both ratings and trust relationships.  ...  Neil Yorke-Smith thanks the Operations group at the Judge Business School and the fellowship at St Edmund's College, Cambridge.  ... 
doi:10.1016/j.knosys.2014.10.016 fatcat:jqox5dra4ndfnabm6qqe4quszm

A social network analysis trust–consensus based approach to group decision-making problems with interval-valued fuzzy reciprocal preference relations

Jian Wu, Francisco Chiclana
2014 Knowledge-Based Systems  
Finally, a quantifier guided non-dominance possibility degree (QGNDPD) based prioritisation method to derive the final consensus-trust based solution is proposed.  ...  The main novelty of this model is that it determines the importance degree of experts by combining two reliable resources: trust degree (TD) and consensus level (CL).  ...  A web based consensus support system for group decision making problems and incomplete preferences. Information Sciences 180 , 4477-4495.  ... 
doi:10.1016/j.knosys.2014.01.017 fatcat:og2n2h257zcyffgaktvbihhrc4

A knowledge discovery method based on genetic-fuzzy systems for obtaining consumer behaviour patterns. An empirical application to a Web-based trust model

Jorge Casillas, Francisco J. Martinez Lopez
2009 International Journal of Management and Decision Making  
An empirical application to a web-based trust model', Int.  ...  Specifically, it has been paid attention to illustrate, in detail, how this proposed (Knowledge Discovery in Databases) KDD method performs with an empirical application to a Web-based trust consumer model  ...  Acknowledgement Research supported in part by the Spanish Ministry of Education and Science, under project No. TIN2005-08386-C05-01.  ... 
doi:10.1504/ijmdm.2009.026685 fatcat:573wgjcsajfzlm23wp5szos4yq

Heterogeneous network-based trust analysis

Manish Gupta, Jiawei Han
2011 SIGKDD Explorations  
The trust analysis under such a framework is considered as heterogeneous network-based trust analysis. This paper will survey heterogeneous network-based trust analysis models and their applications.  ...  Hence, trustworthiness of information is an important issue in this datadriven world economy.  ...  For the estimate of the truth value of facts given the trustworthiness of sources, a simple averaging is used. 2-Estimates uses two estimators for the truth of facts and the error of sources.  ... 
doi:10.1145/2031331.2031341 fatcat:udbel5jlezg5vh4i67bpl47vtq

Content-driven trust propagation framework

V.G. Vinod Vydiswaran, ChengXiang Zhai, Dan Roth
2011 Proceedings of the 17th ACM SIGKDD international conference on Knowledge discovery and data mining - KDD '11  
Using a retrieval-based approach to find relevant articles, we instantiate the framework to compute trustworthiness of news sources and articles.  ...  We show that the proposed framework helps ascertain trustworthiness of sources better.  ...  Any opinions, findings, conclusions, or recommendations are those of the authors and do not necessarily reflect the view of the sponsors.  ... 
doi:10.1145/2020408.2020567 dblp:conf/kdd/VydiswaranZR11 fatcat:dmc7ug7cyfg73kfuvxq3haqofe
« Previous Showing results 1 — 15 out of 17,549 results