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Gun control group sues ATF over records release
Brady, a nonprofit gun control advocacy group, is suing the ATF and the DOJ over their refusals to release documents and other information about who the largest sellers of crime guns in the U.S. are.(Image credit: Charly Triballeau)
Bandits for Efficient Experimentation: Adapting to Control Group, Preferences, and Context Drifts
arXiv:2606.09802v1 Announce Type: new Abstract: We consider a variant of the linear contextual stochastic multi-armed bandits, where the learner must provide recommendations to a group of users, each having its personalized preference vector, and in the presence of context distributions that are drifting over time. Under practitioner-friendly assumptions, we reduce this setting to linear bandit with stationary mean but heteroskedastic and non-stationary noise. We further study the case when...
Dozens Killed as Explosion Flattens Rebel-Held Village in Myanmar
The aftermath of an explosion on Sunday in Kaung Tup, a village in Myanmar, as seen in a handout photo provided by Palaung Land, a group with links to the rebel group that controls the area.
Dozens Killed as Explosion Flattens Rebel-Held Village in Myanmar
The aftermath of an explosion on Sunday in Kaung Tup, a village in Myanmar, as seen in a handout photo provided by Palaung Land, a group with links to the rebel group that controls the area.
Parameter-Free and Group Conditional Online Conformal Prediction
arXiv:2606.00419v1 Announce Type: cross Abstract: Uncertainty quantification (UQ) is critical for the deployment of machine learning predictors in real-world scenarios where the data distribution may shift over time (i.e., data may not be exchangeable). Online conformal prediction (OCP) methods address this issue at the expense of either (i) group-wise error control or (ii) learning-rate independent implementation. Group-conditional coverage is essential for fairness across different...
Parameter-Free and Group Conditional Online Conformal Prediction
arXiv:2606.00419v3 Announce Type: replace-cross Abstract: Uncertainty quantification (UQ) is critical for the deployment of machine learning predictors in real-world scenarios where the data distribution may shift over time (i.e., data may not be exchangeable). Online conformal prediction (OCP) methods address this issue at the expense of either (i) group-wise error control or (ii) learning-rate independent implementation. Group-conditional coverage is essential for fairness across different...
Measuring the Symmetry--Data Exchange Rate
arXiv:2606.01090v1 Announce Type: cross Abstract: Equivariance theory predicts that an architectural symmetry prior reduces sample complexity by a factor of |G|; this is widely cited but rarely measured as a scaling law with controls that separate the prior from its confounds. On a controlled C_n-symmetric task, we report three findings. First, a wrong-group control with identical orbit size and matched compute is worse than no constraint (joint pairwise CI [+0.79, +3.26] excludes zero,...
A first-in-class pulsatile FXR agonist for bile-acid-related liver diseases
Abstract Nuclear receptors are central regulators of metabolism1, yet therapeutic strategies that enforce continuous receptor activation frequently lead to reduced efficacy and unacceptable toxicity. Here we report a first-principles drug design strategy that aligns pharmacokinetics with physiological signalling cycles. We developed linafexor, a potent non-bile-acid agonist of the farnesoid X receptor (FXR)2; it is engineered for rapid systemic clearance, which enables pulsatile receptor...
Faster Synchronous On-Policy RL via Straggler-Aware Group Sizing
arXiv:2606.02218v1 Announce Type: new Abstract: Synchronous reinforcement learning methods such as Group Relative Policy Optimization (GRPO) provide stable and reproducible on-policy training, but they are highly vulnerable to stragglers, a single unusually long rollout can delay reward computation and parameter updates for the entire group. This problem becomes more severe as group size increases, creating a tension between the benefits of larger groups and the wall-clock cost of...
Parameter-Free and Group Conditional Online Conformal Prediction
Announce Type: replace-cross Abstract: Uncertainty quantification (UQ) is critical for the deployment of machine learning predictors in real-world scenarios where the data distribution may shift over time (i.e., data may not be exchangeable). Online conformal prediction (OCP) methods address this issue at the expense of either (i) group-wise error control or (ii) learning-rate independent implementation.