https://answer.freetools.me/tags/%E6%95%B0%E6%8D%AE%E6%B8%85%E6%B4%97/ Recent content in 数据清洗 on Answer Hugo -- 0.152.2 zh-cn Thu, 12 Mar 2026 02:47:11 +0800 https://answer.freetools.me/%E9%A2%84%E8%AE%AD%E7%BB%83%E6%95%B0%E6%8D%AE%E5%A6%82%E4%BD%95%E5%86%B3%E5%AE%9A%E5%A4%A7%E6%A8%A1%E5%9E%8B%E7%9A%84%E4%B8%8A%E9%99%90%E4%BB%8E%E6%95%B0%E6%8D%AE%E8%B4%A8%E9%87%8F%E5%88%B0%E6%B8%85%E6%B4%97%E6%B5%81%E7%A8%8B%E7%9A%84%E5%AE%8C%E6%95%B4%E8%A7%A3%E6%9E%90/ Thu, 12 Mar 2026 02:47:11 +0800 https://answer.freetools.me/%E9%A2%84%E8%AE%AD%E7%BB%83%E6%95%B0%E6%8D%AE%E5%A6%82%E4%BD%95%E5%86%B3%E5%AE%9A%E5%A4%A7%E6%A8%A1%E5%9E%8B%E7%9A%84%E4%B8%8A%E9%99%90%E4%BB%8E%E6%95%B0%E6%8D%AE%E8%B4%A8%E9%87%8F%E5%88%B0%E6%B8%85%E6%B4%97%E6%B5%81%E7%A8%8B%E7%9A%84%E5%AE%8C%E6%95%B4%E8%A7%A3%E6%9E%90/ 深入解析大模型预训练数据处理的完整流程：从Common Crawl原始网页到高质量训练语料的转变过程。涵盖URL过滤、精确/近似/语义去重、启发式与模型驱动质量过滤、PII移除、数据混合策略等核心技术，以及数据质量对模型性能的量化影响。