When evaluating alternative security solutions, such as security mechanism, security protocols etc., “hard” data or information is rarely available, and one have to relay on the opinions of domain experts. Log-files from IDS, Firewalls and honeypots might also be used. However, such source are most often only used in an “penetrate and patch” strategy, meaning that system administrators, securit...

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People give information about their personal preferences in many different ways, depending on their background. This paper deals with group decision making problems in which the solution depends on information of a different nature, i.e., assuming that the experts express their preferences with numerical or linguistic values. The aim of this paper is to present a proposal for this problem. We i...

With the growing popularity of the Web 2.0, we are more and more provided with documents expressing opinions on different topics. Recently, new research approaches were defined in order to automatically extract such opinions on the Internet. Usually they consider that opinions are expressed through adjectives and they extensively use either general dictionaries or experts in order to provide th...

The key purpose of this paper is to present an alternative viewpoint for combining expert opinions based on finite mixture models. Moreover, we consider that the components are not necessarily assumed be from same parametric family. This approach can enable agent make informed decisions about uncertain quantity interest in a flexible manner accounts multiple sources heterogeneity involved expre...

The aim of this paper is to propose a soft consensus model based on interpolative Boolean algebra for group decision making problems. Consensus degrees are calculated on three levels (on pairs of alternatives, alternatives, collective level) by means of pseudo-logical aggregation. The relation of equivalence is employed as a similarity measure among experts' opinions. In fact real-valued realiz...

In a continued effort to better define the field of insider threat research, this study presents a survey of 30 cybersecurity experts’ opinions on the attributes of a prototypical insider and insider threat case. The survey is based on the attributes in the Entity-Relationship Model developed in a previous study of 42 different definitions of insider and insider threat. To develop clearer conse...

Accurately identifying, grading and then determining the authenticity of rare collectible items such as coins, stamps, cards, comic books and artwork is a subjective non-automated process conducted by appraisers or graders. Appraisers and graders are usually human experts in their respective fields that draw on large established pools of domain knowledge, opinions of other experts in their fiel...