GRU	Gated Recurrent Unit
LSTM	Long short-term memory
RNN	Recurrent Neural Network
FC	Fully-connected layer
CCC	Concordance Correlation Coefficient
RMSE	Root-mean-square deviation
AVEC	The Audio/Visual Emotion Challenge
DDS	Detecting Depression with AI Sub-Challenge
Re	PHQ-8 Regression Task
Cl	5-class Classification Task
Ge	Gender Binary Classification Task
PHQ-8	Patient Health Questionnaire eight-item depression scale
CNN	Convolution Neural Network