Archives AI News

Resolving Predictive Multiplicity for the Rashomon Set

arXiv:2601.09071v1 Announce Type: new Abstract: The existence of multiple, equally accurate models for a given predictive task leads to predictive multiplicity, where a “Rashomon set” of models achieve similar accuracy but diverges in their individual predictions. This inconsistency undermines trust…

Lean Clients, Full Accuracy: Hybrid Zeroth- and First-Order Split Federated Learning

arXiv:2601.09076v1 Announce Type: new Abstract: Split Federated Learning (SFL) enables collaborative training between resource-constrained edge devices and a compute-rich server. Communication overhead is a central issue in SFL and can be mitigated with auxiliary networks. Yet, the fundamental client-side computation…

Penalized Fair Regression for Multiple Groups in Chronic Kidney Disease

arXiv:2512.17340v2 Announce Type: replace-cross Abstract: Fair regression methods have the potential to mitigate societal bias concerns in health care, but there has been little work on penalized fair regression when multiple groups experience such bias. We propose a general regression…

Training Large Neural Networks With Low-Dimensional Error Feedback

arXiv:2502.20580v4 Announce Type: replace Abstract: Training deep neural networks typically relies on backpropagating high dimensional error signals a computationally intensive process with little evidence supporting its implementation in the brain. However, since most tasks involve low-dimensional outputs, we propose that…

Distribution-Aligned Sequence Distillation for Superior Long-CoT Reasoning

arXiv:2601.09088v1 Announce Type: new Abstract: In this report, we introduce DASD-4B-Thinking, a lightweight yet highly capable, fully open-source reasoning model. It achieves SOTA performance among open-source models of comparable scale across challenging benchmarks in mathematics, scientific reasoning, and code generation…

Nonlinear reconciliation: Error reduction theorems

arXiv:2507.22500v2 Announce Type: replace Abstract: Forecast reconciliation, an ex-post technique applied to forecasts that must satisfy constraints, has been a prominent topic in the forecasting literature over the past two decades. Recently, several efforts have sought to extend reconciliation methods…