Cov Loss: Covariance-Based Loss for Deep Face Recognition
Bibliographic record
Abstract
Recently, deep neural networks (DNNs) have emerged as state-of-the-art approaches for various computer vision areas. In this paper, we propose an optimized approach for large-scale face recognition. Our work is motivated through the recent development of deep convolutional neural networks (CNNs) that use different loss functions to learn deep features from face images to perform face recognition. As opposed to previous works, we model Cov loss to optimize deep features along the covariance matrix to enhance discriminative power. We formulate Cov loss to maximize inter-class variance and minimize intra-class variance by optimizing the distance between the deep features and their corresponding class covariances in the Euclidean space. The proposed Cov loss is evaluated on large-scale face recognition problems and present results on LFW, IJB-A Janus, IJB-C Janus, and Celebrity Frontal-Profile (CFP). By optimizing features along both Euclidean and angular spaces, our novel loss function learns more robust feature representations of faces, and improves general performance results comparable to the state-of-the-art results.
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How this classification was reachedexpand
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 | 0.001 |
| 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) | 0.000 | 0.002 |
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".