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开放权重Open Weights

Open Weights

  • 选型与成本Selection & cost
  • 第一站 · 进门Station 1 · Getting In
解决什么问题What problem it solves

权重可下载、但许可证未必算「开源」。它是介于开源与闭源之间的第三种形态。Weights you can download, but a license that may not qualify as 'open source' — a third form between open and closed.

这是什么What it is

开放权重指模型权重可公开下载,但许可证常附带限制条款。

「开源」的严格定义来自 OSI《开源定义》十条准则,含源码可得、不得限制使用领域。

OSI 官方明确认定 Llama 3.x 的社区许可证不符合开源定义。

学界与 OSI 通常把 Llama 这类许可称为开放权重。英文叫 open weights,不叫 open source。

Open weights means model weights are publicly downloadable, often with restrictive license terms.

The strict definition of 'open source' is OSI's ten-criterion Open Source Definition, including source availability and no field-of-use restrictions.

OSI has stated explicitly that the Llama 3.x community license does not meet the open source definition.

Researchers and OSI typically call such licenses 'open weights' rather than open source.

为什么需要知道Why it matters

「开源模型」的宣传经常实际是开放权重。两者商用条款差很多,选模型前要看许可证原文。'Open-source model' marketing is often actually open weights. The commercial terms differ a lot — read the license before choosing.

出处Sources
  • OSI《Open Source Definition》官方页(十条准则)OSI Open Source Definition (ten criteria) ↗
  • OSI 官方博客《Meta's Llama license is still not open source》OSI blog: Meta's Llama license is still not open source ↗