Info-Request (DAMSL): Introduces an obligation for the hearer to provide information.
YN-Question (DIT): S wants to know the truth value of a given proposition; S believes that A knows the truth value of that proposition.
Yes-No-Question (SWBD-DAMSL): is used for yes-no questions only if they both have the pragmatic force of a yes-no-question and if they have the syntactic and prosodic markings of a yes-no question (i.e. subject inversion, question intonation).  Yes-no questions that are pragmatically questions but have declarative syntax are marked with ^d [“declarative question”] Yes-no questions that are syntactically (in form) questions but do not rhetorically function as questions are marked either as qh [“rhetorical questions”] or bh [“rhetorical question continuer”], depending on whether the rhetorical question is functioning as a backchannel. 
QUERY-YN (HCRC MapTask): A QUERY-YN asks the partner any question that takes a yes or no answer and does not count as a CHECK or an ALIGN. In the Map Task, these questions are most often about what the partner has on the map. They are also quite often questions that serve to focus the attention of the partner on a particular part of the map or that ask for domain or task information where the speaker does not think that information can be inferred from the dialogue context. 
Question (LINLIN): User obtains information from the system.
YNQ (TRAINS): S asks a yes-no question, trying to determine the polarity of a proposition.