Wyniki wyszukiwania - BazTech

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Dedukcja zachowań węzłów sieci ad hoc na podstawie potwierdzeń końcowych: ocena dokładności

Konorski J., Rydzewski K.

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

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2016

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nr 8-9

1010--1014, CD

PL

Przebadano precyzję algorytmu dedukcji rzeczywistych spolegliwości węzłów sieci MANET w oparciu o potwierdzenia end-to-end i bez użycia mechanizmu watchdog. W przeprowadzonych eksperymentach numerycznych wskazano charakterystyki topologiczne wpływające na tę precyzję.

EN

Based on extensive numerical experiments, the accuracy of deduction of MANET nodes' intrinsic trustworthiness using end-to-end acknowledgement statistics is investigated, and topological factors critical to this accuracy are pointed out.

2

Study of the temporal-statistics-based reputation models for q&a systems

Adamska P., Juźwin M.

Computer Science

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2015

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Vol. 16 (3)

253--263

EN

Q&A systems are becoming a vital source of knowledge in many different domains. In some cases, they are also associated with services which provide employers with important information regarding the expertise of its potential employees. Therefore, the reputation earned in such communities can be associated with better job opportunities, and its significance is increasing. However, in a community where there is no direct financial motivation for participation, a reputation score is not solely an expertise metric. It is also a powerful motivator for remaining an active community member. Regardless of this complexity, algorithms for calculating reputation scores need to be as easy to understand (and implement) as possible. Therefore, the designers of the Q&A reputation system often implement a set of fixed rules, to some extent trading quality for quantity. Our goal is to study whether (and how) temporal statistics of a Q&A website can be incorporated into its reputation system. We want the proposed mechanism to dynamically adjust the impact of a single-answer evaluation on the reputation of its producer. We would like the proposed model to accurately reflect the expertise of content producers.

3

The Oracle - a New Intelligent Cooperative Strategy of Attacks on Trust and Reputation Systems

Janiszewski M.

Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica

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2014

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Vol. 14, no. 2

86--102

EN

The paper presents a new concept of attack on trust and reputation systems. The oracle attack could violate the security provided by some of the existing reputation systems. The formal model of the attack is presented in the article on the base of the reference trust model, provided bythe author. The author has proved that this type of attack could be eficient. On the other hand,a sort of measures is provided in the paper which could be implemented in the reputation systems to overcome identified vulnerabilities, unfortunately at the cost of increase of system complication.The paper also provides a definition of intelligent strategies of attacks on trust and reputation systems based on cooperation of many malicious nodes and justifies why this type of attacks is a serious threat.