WASHINGTON—The Justice Department spent years investigating Abbott Laboratories ABT0.24%increase; up pointing triangle over how it managed a baby formula facility where potentially deadly bacteria was ...

The new features, including connectors to third-party data sources, are aimed at making the AI assistant more useful for finance professionals.

varguid is a Python implementation of the stage-1 variance-guided regression method described in: Liu S. and Lu M. (2026). Variance-Guided Regression for Heteroscedastic Data with a Grouping-Based ...

Abstract: The estimation of laser linewidth or phase noise variance is of great significance for the applications including coherent optical communications, optical fiber sensing, quantum optics, etc.