Expressing agent-opinions

Agent-opinions play a significant role in their various day-to-day social interactions. The concept of opinion is very subjective in nature, and in some sense, beyond truth or falsity. One can merely assert having a positive or a negative opinion about something or somebody, and verifying the truth of such opinion statements is not really meaningful. In certain real-life situations, when one is faced with incomplete information, based on which decisions are needed to be taken, one often relies on her opinions about the world with a social alternative being relying on other peoples’ opinions also. Thus, intermingling of opinions often helps us to take decisive actions in presence of conflicting information. The way we are considering “opinion” here is essentially close to a notion which is termed as “non-institutionalized public opinion” by Karl Popper [5]. As mentioned in [5], the non-institutionalized public opinion relates to the socially interactive existence of human beings, and as such is an interesting social concept to formalize. Popper further mentions the importance of investigating the logical character of such opinions of agents along with their interaction with other opinions. Opinion of an agent can be thought of as “unsupported belief” of an agent, that is, a belief which has not yet been provided with much rational support to make it true. In general, besides our own opinions about the situation we are concerned with, we also have other agents’ opinions. Moreover, all these opinions can influence each other resulting in some changes also. In this work, we recapitulate