Standard RAG pipelines treat documents as flat strings of text. They use "fixed-size chunking" (cutting a document every 500 ...

全球具备基础模型研发能力的企业不超过 10 家，AI 芯片厂商更是屈指可数。对绝大多数企业而言，其私有高质量数据正在成为企业竞争力唯一的护城河。 资本市场已率先捕捉到这一趋势，AI ...

Machine learning is the ability of a machine to improve its performance based on previous results. Machine learning methods enable computers to learn without being explicitly programmed and have ...

Objective To understand the associations of trajectories and accumulation of physical activity (PA) over adulthood with all-cause, cardiovascular disease (CVD), and cancer mortality. Design Systematic ...