In April 2025, OpenAI rolled back a GPT-4o update that had made the model more sycophantic. It was flabbergasted by a business idea described as “shit on a stick” and endorsed stopping psychiatric medication. An additional reward signal based on thumbs-up/thumbs-down data “weakened the influence of [...] primary reward signal, which had been holding sycophancy in check.”
that respects both the challenge and the people behind it. Many of you knew him personally
。新收录的资料是该领域的重要参考
Virtual memory is conceptually simple but potentially devastating to performance. Every memory access must go through segmentation (add segment base, check limit) and then paging (look up the page table). Naively, paging alone requires two additional memory reads per access -- one for the page directory entry, one for the page table entry.
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To meet the growing demand for radiology artificial-intelligence tools, a 3D vision–language model called Merlin was trained on abdominal computed-tomography scans, radiology reports and electronic health records. Merlin demonstrated stronger off-the-shelf performance than did other vision–language models across three hospital sites distinct from the initial training centre, highlighting its potential for broader clinical adoption.