Bibliographic record
Abstract
Few-shot Learning (FSL) approaches aim to develop generalizable models that can classify novel data points with a small set of labeled training data for each class. FSL approaches have the potential to narrow down the performance gap between machines and humans, but it is challenging because humans can quickly adapt to new activities and make decisions based on organized and reusable concepts. However, existing FSL approaches learn complex feature representations ignoring the conceptual information. We propose an Attentional Feature Fusion for Few-shot Learning (AF3), a semi-supervised approach that combines features of multiple scales and utilizes prior knowledge to learn better human interpretable concepts. Attentional feature fusion involves merging features from various layers and branches through an attention mechanism that prioritizes different features through attentional weights. AF3 extracts more discriminative features by generating attention maps for both query and support images. We evaluated our AF3 model in FSL settings on three benchmark datasets, including a fine-grained image classification. Extensive experiments show that our AF3 model outperformed the state-of-the-art in the most challenging 5-way-5-shot learning tasks.
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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 | 0.002 | 0.006 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.003 |
| Open science | 0.003 | 0.002 |
| Research integrity | 0.002 | 0.002 |
| 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".