Table 3:
Summary of hand-crafted features. Participant: indicates features are from participant side only; Confederate: indicates features are from confederate side only; Both: indicates features are from both role
| Lexical Features | Description |
|---|---|
| Filler/Pause count | Number of pause filler (e.g. ‘um, hmm, uhm”) (Participant) |
| Laugh count | Number of laugh (Participant) |
| No count | Number of ‘no’ (Participant) |
| Question count | Number of questions (Participant) |
| Short vs Whole | Ratio of one-word sentences to all sentences (Participant) |
| Average length | Average length (in number of words) of sentences (Both) |
| Word ratio | Ratio of the role’s words to total number of words (Both) |
| Sentence ratio | Ratio of the role’s turn to total number of turns (Participant) |
| Backchannel count | Number of backchannel utterances (Participant) |
| Acoustic Features | Description |
| Percent of Silence | Silence time / Total time (Participant) |
| openSMILE | Pitch and voice quality related features |