Multiple valued logics:
Multiple valued logics, where altered types of truth value such as "unknown" are may be allowed. These have some of the particular advantages of fuzzy logics, without any type of necessarily worrying about probability. Modal logics that can cater for individual agents' beliefs about the world. For example, if one of agent could be trust which is a certain statement is true, but other not. Modal logics are need us deal with statements that may be believed to be true to some conditions that iay be exists, but for not all agents.
Temporal logics, that is enable us to write sentences involving considerations of time, for example if we see that in this statement may become true sometime in the future.