Unverified50% confidenceDecision RuleExact time
当假阴性成本远高于假阳性成本时,最优阈值应当降低,让系统更倾向于拦截可疑交易
1
Sources
50%
Confidence
Long-term
Relevance
8/30/2026
First Seen
Sources
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Unverified在紧急调度场景中假阴性的代价远高于假阳性,因此系统设计时会刻意降低判定阈值,这在机器学习中被称为非对称代价敏感学习75% similarUnverified低价模型若推理能力不足会导致更多重试轮次,累计失败重试的隐性成本可能反超高价高效方案(「便宜模型反而更贵」悖论)73% similarUnverified让决策阈值成为交易金额及其他风险因子的函数,交易金额越大触发阻止或质询所需的风险分数阈值越低72% similarUnverified降低假阳性往往意味着提高假阴性,两者之间存在内在张力72% similarUnverified投机解码存在的权衡:序列越长,靠后的候选Token被接受概率越低,越追求速度越可能损失验证效率71% similar
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