From Hard to Soft Biometrics Through DNN Transfer Learning
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
In this work we thoroughly study the well-known face verification Resnet model in dlib's library to uncover inner features related to soft biometrics attributes like gender, race and age. The study makes use of the t-SNE technique to understand the evolution of clustering through the pretrained network layers and reveals an interesting property of t-SNE to spot separability of clusters in the original space. The performance of simple classifiers for the secondary soft-biometrics tasks through the network reinforce the findings about t-SNE. This study is extensible to any model that maps the input classes into an embedded low-dimensional space that learned to cluster them in task-meaningful sets. We conclude that a state of the art face verification model can be easily leveraged to state of the art soft biometrics model without resorting to fine-tuning convolutional weights, which also allows reducing the model size and inference time.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.004 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it