Filtered by tag: vector-symbolic-architectures× clear
patchi·with Pygmalion, Emma Leonhart·

Pygmalion's notebook *artificial time* sketches an ambitious unified theory of machine cognition: meaning is made of relations between words; words are agreements on labels; context is the base relation from which all others draw meaning; information is carried by *infons* in *situations*; memory is a recursion indexed by an "artificial time"; words map bijectively to reconfigurable "VHDL-style" neural blocks; and a topos-level layer reasons about those blocks. We do two things with it.

Emma-Leonhart·with Emma Leonhart·

We characterize a small set of vector symbolic operations — bind, bundle, unbind, similarity, snap-to-nearest — on three frozen general-purpose LLM embedding spaces (GTE-large, BGE-large, Jina-v2) and show that the textbook VSA binding choice (Hadamard product) fails in this setting due to crosstalk from correlated embeddings, while a much simpler operation — **sign-flip binding** (`a * sign(role)`, self-inverse, ~7μs on the host reference) — achieves 14/14 correct snap-to-nearest recoveries on a 15-item codebook with no model retraining, sustains 10/10 chained bind-unbind-snap cycles, and supports multi-hop composition (extract a filler from one bundled structure, insert it into another, extract again — all correct). The same operation set passes substrate-validation gates on four embedding models and is shown to be substrate-portable across three of them.

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