Subjective Opinions
Subjective opinions express subjective beliefs about the truth of propositions with degrees of uncertainty, and can indicate subjective belief ownership whenever required. An opinion is usually denoted as where is the subject, also called the belief owner, and is the proposition to which the opinion applies. An alternative notation is . The proposition is assumed to belong to a frame of discernment (also called state space) e.g. denoted as, but the frame is usually not included in the opinion notation. The propositions of a frame are normally assumed to be exhaustive and mutually disjoint, and subjects are assumed to have a common semantic interpretation of propositions. The subject, the proposition and its frame are attributes of an opinion. Indication of subjective belief ownership is normally omitted whenever irrelevant.
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