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wiki/concepts/Self-Referential-Computation.md
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title: "Self-Referential Computation"
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type: concept
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tags: []
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---
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## Definition
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自引用计算是指系统的输出被用于修改系统自身结构的计算模式。在递归自我优化生成系统中,生成器的输出(优化后的提示词/程序)被元生成算子 $M$ 用来更新生成器本身,形成闭环。
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## Expression
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在 λ-calculus 中的表达:
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单步更新函数:
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$$\text{STEP} \equiv \lambda G.\; (M\;G)\big((O\;(G\;I));\Omega\big)$$
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不动点组合子(Y-Combinator):
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$$Y \equiv \lambda f.(\lambda x.f(x,x))(\lambda x.f(x,x))$$
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稳定生成器:
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$$G^* \equiv Y\;\text{STEP}$$
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满足自引用不动点方程:
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$$G^* = \text{STEP}\;G^*$$
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## Key Insight
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生成器被定义为"使用自身输出的函数"的不动点。这意味着生成器的输出已经编码了改进生成器所需的全部信息——无需外部干预,系统即可自我完善。
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## Sources
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- [[a-formalization-of-recursive-self-optimizing-generative-systems]]
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## Connections
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- [[Y-Combinator]] ← implements ← [[Self-Referential Computation]]
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- [[Generator Space]] ← domain_of ← [[Self-Referential Computation]]
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- [[Fixed-Point Semantics]] ← provides_semantics ← [[Self-Referential Computation]]
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