Below are the descriptions of the feedback functions with their corresponding label that we have identified in the Switchboard corpus.
| Label | Function Description |
|---|---|
| (C) Continue | Continue speaking. I hear you and I'm listening but not necessarily agreeing/disagreeing. |
| (U) Non-understanding | I'm uncertain I understood/heard what you said. |
| (A) Agree | I agree with what you said. |
| (D) Disagree | I doubt what you said is true. I disagree with what you said. |
| (Y) Yes | I am giving a positive response/answer to your yes/no question. |
| (N) No | I am giving a negative response/answer to your yes/no question. |
| (S) Sympathy | I'm expressing sympathy/pity/sorrow/concern/compassion to a negative statement. |
| (Ds) Disapproval | I am showing disapproval/disgust. |
| (MS) Mild Surprise | I am showing mild surprise, showing slight interest. |
| (SS) Strong Surprise | I am showing strong surprise; I am impressed. |
| (O) Other | Not a feedback. Filler, listener trying to take turn, or not enough context to determine function. |
| (?) Unknown feedback | A feedback that doesn't fit into the current labels. |