Anchor-Guided Contrastive Learning for User Identification Based On Video Preferences
Bibliographic record
Abstract
User identification through aesthetic preferences has gained attention as a promising direction in social behavioral biometrics, offering a non-invasive and privacy-conscious alternative to traditional physiological identifiers. Unlike still images or single-modal inputs, video-based aesthetic preferences provide richer, temporally-aware insights into user behavior, enabling a deeper understanding of personal taste and style. Despite this potential, existing approaches often treat preference items independently and fail to capture the interrelationships within a user’s preference set. To address these limitations, this paper introduces Preference-Aware Set Encoding with Contrastive Personalization (PASE), a novel deep learning framework designed to model user identity based on structured preferred video sets. The proposed method integrates a Cross-Video Attention Encoder to learn co-preference patterns across videos, a User-Anchor Contrastive Loss to align personalized embeddings, and a Cross-Set Mixup Regularization technique to improve generalization by simulating diverse preference scenarios. Evaluation on a curated aesthetic dataset demonstrates that PASE achieves 98.38% identification accuracy, outperforming unimodal and multi-modal baselines. These findings highlight the unique advantages of leveraging video-based aesthetic information for biometric identification, particularly in applications demanding both accuracy and user-friendly privacy safeguards.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".