“…To summarise let us consider the following reputation statement: user x rates 4 stars over 5 product y; user x is the source, 5 star is the claim type, 4 star is the claim value, product y is the target. As outlined in [7], [8], [9] existing reputation systems show many deficiencies: i) lack of connection between reputation statements and its context, e.g judgement about product, delivery, price, interaction with seller is melted in a 5 star claim type plus a detailed written feedback; ii) incomplete or noncomprehensive provided information which causes incorrect perception of the service reputation by the user; iii) no distinction between expressions of fact and opinion, that is between objective and subjective claims; iv) lack of a proper identification mechanism that should allow only effective users of a service to evaluate it thus avoiding fake feedbacks. There are lots of reputation websites that do not check ratings attendability (TripAdvisor.com, RealSelf.com, Glassdoor.com, Honestly.com, RateMyProfessors.com).…”