V2EX pseudo-random

Pseudo-random

定义 (Definition)

pseudo-random(伪随机的):指看起来像随机、但实际上由确定性的规则/算法生成的序列或结果;如果使用相同的初始条件(如种子 seed),就会产生相同的输出。(在计算机科学、统计模拟与加密等领域常见。)

发音 (Pronunciation, IPA)

/sudorndm/

例句 (Examples)

The app generates pseudo-random numbers for games.
这个应用为游戏生成伪随机数。

Although the sequence is pseudo-random, using the same seed will reproduce the exact same results, which is useful for testing and simulations.
虽然这个序列是伪随机的,但使用相同的种子会复现完全相同的结果,这对测试和仿真很有用。

词源 (Etymology)

pseudo- 来自希腊语 pseudes,意为“假的、貌似的”;random 意为“随机的”。合起来强调“表面随机,但本质并非真正随机(通常可被算法复现)”。

相关词 (Related Words)

文学与名著用例 (Literary / Notable Works)

  • The Art of Computer Programming, Volume 2: Seminumerical Algorithms(Donald E. Knuth):讨论伪随机数生成与随机性检验等主题。
  • Introduction to Algorithms(Cormen, Leiserson, Rivest, Stein):在随机化算法与概率分析相关章节中涉及伪随机的概念与应用。
  • Numerical Recipes(Press 等):在数值模拟与蒙特卡罗方法语境下使用并讨论伪随机数。
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