Check (DIT): S wants to know the truth value of a given proposition; S believes that A knows the truth value of that proposition; S weakly believes that the proposition is true
Tag Question (SWBD-DAMSL): Labelled as simply a Yes-No Question, not given a separate dialogue act label.
CHECK (HCRC MapTask): A CHECK move requests the partner to confirm information that the speaker has some reason to believe, but is not entirely sure about. Typically the information to be confirmed is something the partner has tried to convey explicitly or something the speaker believes was meant to be inferred from what the partner has said. In principle, CHECK moves could cover past dialogue events (e.g., “I told you about the land mine, didn’t I?”) or any other information that the partner is in a position to confirm. However, CHECK moves are almost always about some information that the speaker has been told. One exception in the Map Task occurs when a participant is explaining a route for the second time to a different route follower, and asks for confirmation that a feature occurs on the partner’s map even though it has not yet been mentioned in the current dialogue.
Tag (TRAINS): An intent clarification utterance clarifies the intention of a previous utterance. The name Tag is assigned as this is the role that is played by tags in sentences such as John is coming to the party, isn’t he?. The tag indicates that the utterance is a question rather than an assertion. A tag can be deleted without affecting the dialog (if the previous utterance is treated appropriately as indicated by the tag).
Request_Comment (Verbmobil): With an utterance expressing a REQUEST_COMMENT the speaker explicitly asks his dialogue partner to comment on a proposal. It is often used to yield the turn; in that case it prompts the dialogue partner to respond. A REQUEST_COMMENT can easily be distinguished from a SUGGEST, because a REQUEST_COMMENT does not contain explicit information about a concrete topic. Instead, the topic can be referred to anaphorically.