V2EX state space

State Space

释义 Definition

state space(状态空间):用于描述系统“所有可能状态”的集合。常见于控制理论、动力系统、物理学与机器学习中;系统在任一时刻的状态通常用一个状态向量表示,而所有可能状态向量构成状态空间。(在某些语境下也可与 phase space/相空间 接近,但用法与侧重点不完全相同。)

发音 Pronunciation (IPA)

/stet spes/

例句 Examples

The robot plans its moves in state space.
机器人在状态空间中规划它的动作。

In a Markov decision process, the policy maps each state in the state space to an action to maximize long-term reward.
在马尔可夫决策过程中,策略把状态空间中的每个状态映射到一个动作,以最大化长期回报。

词源 Etymology

state 源自拉丁语 status(“状态、位置”),space 源自拉丁语 spatium(“空间、范围”)。state space 作为术语在20世纪的系统与控制领域中逐渐固定,用来表示用数学方式刻画系统状态的“总体空间”。

相关词 Related Words

文献与作品中的用例 Literary / Notable Works

  • Linear System Theory and Design(Chi-Tsong Chen)
  • Feedback Control of Dynamic Systems(Franklin, Powell & Emami-Naeini)
  • Reinforcement Learning: An Introduction(Sutton & Barto)
  • Pattern Recognition and Machine Learning(Christopher M. Bishop)
  • Optimal Filtering(Anderson & Moore)
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