V2EX almost-surely

Almost-Surely

Definition 定义

almost-surely(= almost surely)几乎肯定地;十之八九地
在数学/概率论语境中也常指“以概率 1 发生(几乎必然)”,但仍允许极少数例外情况。

Pronunciation 发音

/lmost rli/
/lmst li/

Examples 例句

It will almost-surely rain this afternoon.
今天下午几乎肯定会下雨。

If you keep practicing every day, you will almost-surely improve, even if progress feels slow at first.
如果你每天坚持练习,你几乎肯定会进步,即使一开始进展看起来很慢。

Etymology 词源

almost(几乎)+ surely(肯定地) 组合而成,字面意思就是“几乎可以肯定”。其中 sure 源自古法语 sur(“确定的、安全的”),再往前与拉丁语 securus(“无忧的、可靠的”)相关。

Related Words 相关词汇

In Literature & Notable Works 文学与著作中的用例

  • Probability and Measure(Patrick Billingsley):用 almost surely 表达“以概率 1 成立”的概念(几乎必然收敛等)。
  • Probability: Theory and Examples(Rick Durrett):频繁使用 almost surely 讨论随机过程与极限定理。
  • An Introduction to Probability Theory and Its Applications(William Feller):在经典概率论论述中使用 almost surely 区分“必然”与“概率为 1”但仍可能有例外的情形。
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