This folder provides function labels for four-modal nonverbal behaviors: head movements, facial expressions, gaze behaviors, and listener vocal backchannel (Aizuchi). 

The filename, such as G1S1F1.HeadFunc.Lx.txt, denotes the label from the x-th labeler (x=1, 2, 3).  

The function definitions can be found in 

[Head_Movement_Functions_EN.csv](./Head_Movement_Functions_EN.csv)　<br>
[Facial_Expression_Functions_EN.csv](./Facial_Expression_Functions_EN.csv) <br>
[Gaze_Functions_EN.csv](./Gaze_Functions_EN.csv) <br>
[Aizuchi_Functions_EN.csv](./Aizuchi_Functions_EN.csv) <br>

File format: <br>
[frame] [f1] [f2] .... [fN]

[fx]: labeler's perception of the x-th function; 1: presence, 2: absence. <br>
N = 35 for head, face, and gaze functions<br>
N = 25 for aizuchi function<br>

Snapshot of sample video clip of head movement functions. 
[Function_sample_head_movement.mp4](./Function_sample_head_movement.mp4)
[![sample_head](https://cdn-uploads.huggingface.co/production/uploads/6a97cba3ed217afc6c7ab73a/3VUzOLOZkFOadmGBxeBUG.jpeg)](./Function_sample_head_movement.mp4)

Snapshot of sample video clip of facial expressions functions.
[Funtion_sample_ facial_expression.mp4](./Funtion_sample_facial_expression.mp4)
[![sample_face](https://cdn-uploads.huggingface.co/production/uploads/6a97cba3ed217afc6c7ab73a/3qviD42Odk0Wn8V2JK35i.jpeg)](./Funtion_sample_facial_expression.mp4)

Snapshot of sample video clip of gaze functions.
[Function_sample_gaze.mp4](./Function_sample_gaze.mp4)
[![sampe_gaze](https://cdn-uploads.huggingface.co/production/uploads/6a97cba3ed217afc6c7ab73a/L57NfZZl-0s-2kPZODkdL.jpeg)](./Function_sample_gaze.mp4)

Snapshot of sample video clip of Aizuchi backchannel functions.
[Function_sample_aizuchi.mp4](./Function_sample_aizuchi.mp4)
[![sample_aizuchi](https://cdn-uploads.huggingface.co/production/uploads/6a97cba3ed217afc6c7ab73a/JVQBFILORn_uqmGmhZ1eM.jpeg)](./Function_sample_aizuchi.mp4)