Learning Adaptive Weight Masking for Adversarial Examples
Bibliographic record
Abstract
Adding small, well crafted perturbations to the pixel values of input images leads to adversarial examples, so called because these perturbed images can drastically affect the accuracy of machine learning classifiers. Defenses against such attacks are being studied, often with varying results. In this study, we introduce a model called the Stochastic-Gated Partially Binarized Network (SGBN ), that incorporates binarization and input-dependent stochasticity. In particular, a gate module learns the probability that individual weights in corresponding convolutional filters should be masked (turned on or off). The gate module itself consists of a shallow convolutional neural network, and its sigmoid outputs are stochastically binarized and pointwise multiplied with corresponding filters in the convolutional layer of the main network. We test and compare our model with several related approaches, and to try to gain an understanding of our model, we visualize activations of some of the gating network outputs and their corresponding filters.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 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 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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".