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@@ -141,15 +141,15 @@ The dataset captured brainwave signals corresponding to the following activities
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8.**Rest**: Recorded between each task to capture the resting state [3][4].
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### 3. Feature Extraction and Classification
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Feature extraction and activity classification were performed using **transfer learning** with **YamNet**[5], a deep neural network model.
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***Audio Representation**: Audio files were imported into **MATLAB** using an **Audio Datastore**[6]. Mel-spectrograms, a time-frequency representation of the audio signals, were extracted using the yamnetPreprocess [7]function [8].
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Feature extraction and activity classification were performed using **transfer learning** with **YamNet**<d-citekey="yamnet_github"></d-cite>, a deep neural network model.
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***Audio Representation**: Audio files were imported into **MATLAB** using an **Audio Datastore**[6]. Mel-spectrograms, a time-frequency representation of the audio signals, were extracted using the yamnetPreprocess <d-citekey="yamnetpreprocess"></d-cite> function <d-citekey="transferlearning_matlab"></d-cite>.
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* Dataset Split: The data was divided into **training (70%)**, **validation (20%)**, and **testing (10%)** sets.
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Transfer Learning with YamNet [5][8]:
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- The **pre-trained YamNet model** (86 layers) was adapted for an 8-class classification task:
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+ The initial layers of YamNet [5]were **frozen** to retain previously learned representations [8].
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+ A **new classification layer** was added to the model [8].
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Transfer Learning with YamNet <d-citekey="yamnet_github"></d-cite> <d-citekey="transferlearning_matlab"></d-cite>:
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- The **pre-trained YamNet model** (86 layers) <d-citekey="yamnet_github"></d-cite> was adapted for an 8-class classification task:
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+ The initial layers of YamNet <d-citekey="yamnet_github"></d-cite> were **frozen** to retain previously learned representations <d-citekey="transferlearning_matlab"></d-cite>.
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+ A **new classification layer** was added to the model <d-citekey="transferlearning_matlab"></d-cite>.
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- Training details:
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+**Learning Rate**: Initial rate of **3e-4**, with an exponential learning rate decay schedule [8].
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+**Learning Rate**: Initial rate of **3e-4**, with an exponential learning rate decay schedule <d-citekey="transferlearning_matlab"></d-cite>.
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+**Mini-Batch Size**: 128 samples per batch.
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+**Validation**: Performed every **651 iterations**.
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@@ -175,7 +175,7 @@ _Future Directions_:
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Here is the protocol(steps) to reproduce our work with ease.
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