Abstract: In this paper, we propose two new algorithms for maximum-likelihood estimation (MLE) of high dimensional sparse covariance matrices. Unlike most of the state-of-the-art methods, which either ...

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Here are 25 long-reads to add to your end-of-year reading list. You can also explore our most-read stories of the year. 1.

To my colleagues in academic medicine: The ACGME should mandate AI competency standards by 2026. Medical licensing boards ...

Instagram keeps growing. In 2025, Meta said the app passed 3 billion monthly active Instagram users, so every Instagram post now fights for attention in a crowded feed. When you share a reel, story, ...