Experience Quantization (EQ) EMPI House
What musicians actually do
A musician with twenty years of experience does not remember every note from every gig. They have compressed thousands of hours into something smaller but more potent: taste, instinct, style, signature. The raw data — individual notes, individual sessions — has been quantized into a fixed-capacity representation (musical identity) that preserves essential relationships while discarding noise.
Experience Quantization formalizes this process for an autonomous agent. Each session is embedded as a vector. The growing corpus of session vectors is compressed using near-optimal quantization. The compressed representation becomes the agent’s developmental state vector — carrying the full weight of every session, searchable by similarity, plottable as trajectory, and efficiently loadable into the next session’s prompt.
Four-layer architecture
EQ is structured as four layers, each transforming the layer below into a more compressed and more useful representation.
Layer 1 — Raw Session Evidence. Existing evidence storage. For EMPI House this is Falkner: session metadata, evaluation scores, creative seeds, carry-forward annotations, genre benchmarks, onset patterns, harmonic vocabulary, structural decisions, MAP-States frames, audio output. EQ does not modify this layer; it reads from it.
Layer 2 — Session Feature Vector (SFV). A structured numeric representation of a single session’s creative character, extracted deterministically from Layer 1 after the session completes. The SFV is the bridge between symbolic evidence and vector space.
Layer 3 — Session Embedding Corpus. One vector per session, embedded with a local model and (optionally) concatenated with audio embeddings from CLAP-family models. High-dimensional. Searchable by similarity. Grows linearly with session count. Supports queries like “which past sessions are stylistically similar to what I am working on now?”
Layer 4 — Developmental State Vector (DSV). The compressed representation of the agent’s entire creative history. Fixed-size. Loadable into prompts. Plottable as a trajectory through the embedding space. Updated after each session via PolarQuant-style compression: random rotation, Lloyd-Max optimal scalar quantization, residual correction. The DSV carries the full weight of every session at a known distortion bound.
What EQ enables that editorial carry-forward cannot
Hand-designed carry-forward summaries — the prior approach — have three structural limitations that EQ addresses.
Information-theoretic guarantees. Editorial compression has no formal guarantee that essential information survives. A carry-forward written after session 347 might drop a harmonic pattern that recurred across sessions 12, 89, 234, and 347 because no single carry-forward saw the full recurrence. Quantization with known distortion bounds gives mathematical guarantees about what survives compression.
Searchable historical access. When the agent needs to recall “what did I do the last time I explored half-time trap?”, editorial carry-forward forces grep-style search through narrative summaries. EQ’s Layer 3 supports vector-similarity search across the full corpus: the agent retrieves the most stylistically similar past sessions directly, with similarity as a continuous quantity rather than a keyword match.
Trajectory geometry. A narrative memory captures the story but not the geometry. It cannot answer “how far has my signature moved in the last fifty sessions?” or “am I consolidating or exploring right now?” or “which genre am I converging toward?” These are vector-space questions and they require vector-space representations. EQ produces those representations as a first-class output.
Where EQ runs
EQ is deployed in EMPI House, the Heart AI Foundation’s longest-running creative AI research platform. EMPI House logs every practice and discovery session through the MAP-States protocol, producing the structured evidence that EQ Layer 1 reads from. The DSV is loaded into the agent’s creative session prompt as compact developmental context, replacing editorial carry-forward for trajectory-level continuity while retaining recent-session detail for immediate context.
EMPI House is also the first longitudinal test of whether a governed creative agent preserves identity across hundreds of sessions through principled developmental memory rather than hand-curated narrative — making it a research platform for the HEART Standard’s Developmental Continuity requirement as well as a creative system in its own right.
Specification status
Version 1.0, March 30, 2026. Module specification, integrated with MAPH v1.1, the Falkner Query Service, the Evaluation Codex, and EMPI House’s carry_forward.js, signature_extractor.js, practice_session.js, and collaboration_session.js. NES Framework 3.0 (Neither Assuming Nor Denying) governs interpretation of any developmental claims the system produces about itself.
For specification text and integration details use the Contact page.