Physiological Signal Acquisition

ECG
EDA
Peripheral Skin Temperature

Signal Preprocessing

Noise removal
Baseline correction
Normalization
Segmentation (windowing)

Time-domain features

Frequency-domain features

Time–frequency features

Feature Selection

Dimensionality reduction
Selection of informative features

Machine Learning Models

Logistic Regression
Support Vector Machine
Random Forest
Gradient Boosting
1D-CNN
LSTM

Exhaustion Classification

Low Exhaustion
Medium Exhaustion
High Exhaustion

Adolescent Exhaustion Levels

Feature Extraction