ConceptFormat Drift

格式漂移

指大语言模型在不同温度参数、版本或推理框架下，输出字段名、JSON嵌套层级、枚举值措辞发生细微变化的现象，不产生异常信号而静默流入下游，是RAG流水线中的常见隐患

Timeline (last 90 days)

Oct 19

Different strings may be caused only by format drift (different key order, 1 vs 1.0, whitespace, Markdown code fences), while the logic may be completely identical.

Unverified50%

All Facts (2)

Unverified

通用LLM因缺乏任务约束会产生格式漂移（Format Drift），即每次输出的结构和质量存在不可预测的差异

80%Unverified

Different strings may be caused only by format drift (different key order, 1 vs 1.0, whitespace, Markdown code fences), while the logic may be completely identical.

50%

Source Articles

The Truth Behind Three RAG Pipeline Crashes: Why Inter-Stage Data Contracts MatterJul 21