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In this report, four distinct challenging scopes are addressed under the supervised machine learning paradigm. They comprise binary classification tasks for gender (A1) and smile detection (A2) along with multi-categorical classification tasks concerning eye-colour (B2) and face-shape (B1) recognition. Most notably, several methodologies are proposed to deal with these duties
| Size of each image | 178x218x3 | 178x218x3 | 500x500x3 | 500x500x3 |
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| First operations | None | faces are extracted by means of face_recognition models from images previously converted in grayscale | None | Harmful images are removed with the pre-trained model_glasses specifically designed |
| Pre-processing | Images are rescaled and reshaped | HOG features extracted from face images are standardised before being reduced by PCA | Images are rescaled and reshaped | Images are rescaled and reshaped |
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| Data augmentation on training dataset | Images are randomly and horizontally flipped | None | None | None |
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