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Dynamic / ME-JEPA v2.0.0-rc1: Audited World-Model Runtime and Verified Training-Corpus Artifact

Recursive training on model-generated data causes generative models to lose information about rare events and eventually collapse into inaccurate outputs.

2023/05/27 by Ilia Shumailov, Shumailov, Ilia, Zakhar Shumaylov +9 · 59 voices · 158 citations
Computer Science · Psychology · #Artificial intelligence #Cognitive science #Computational Physics and Python Applications #Computer science #Curse #Data science #Epistemology #Generative grammar #Generative model #Intuition #Natural Language Processing Techniques #Phenomenon #Psychology #Sociology #The Internet #Topic Modeling #World Wide Web

paper · pdf · doi:10.48550/arxiv.2305.17493

published in arXiv (Cornell University) (Cornell University)

openalex publication_date 2023/05/27 · openalex created_date 2023/05/31 · openalex updated_date 2026/08/01

Abstract

Dynamic / ME-JEPA v2.0.0-rc1 is an audited, single-binary JEPA-style world-model runtime that runs three domains — counterworld, gridworld5x5, and the new public-taxonomy careertaxonomy.v1 benchmark — on one RTX 5090 by TOML manifest alone. Every persisted operation flows through 25 typed RocksDB column families plus an append-only audit log; a separate verifier reads every claim back. The reproducibility artifact is a deterministically built Docker + Apptainer (SIF) image with full SHA-256 hash chains and a one-command verify-aggregate path. What's new in v2.0.0-rc1 (vs. v1.0.0-rc5) Meaning-compression layer around the original DynamicJEPA runtime: pairwise instrument readings, constellation/centroid records, Gtau guard verification, signal-yield accounting, and MC-ratio reporting. Pairwise mutual-information audit outputs for the careertaxonomy domain. Cross-domain transfer evidence between counterworld, gridworld5x5, and careertaxonomy. Bundle-to-training-corpus exporter emitting verified (state, action, expectedpersisteddelta, actualreadback, verifierstatus, errorcode, remediation) rows. Release-D source-of-truth gate: aggregate passedcount=5 / failedcount=0; reference check diffcount=0, manifest=passed, fsv=passed. Why this matters One binary, three domains, by TOML alone. A new domain ships as a strict TOML manifest; the Rust runtime carries no domain-specific code branches. Five-seed paper-small results on commodity hardware. Career-taxonomy validation cosine 0.905 ± 0.044 (BCa 95% CI 0.861–0.931); test cosine 0.868 ± 0.068 (BCa 95% CI 0.806–0.912); validation action-contrast accuracy 0.960 ± 0.043. The negative-action ablation A3 collapses to validation cosine 0.790 — exactly as the design predicts and the verifier confirms. Every cited number reads from a CSV in the verified release bundle; hand-typed numbers are forbidden. A reproduction reviewers can actually run. One command returns status: ok, diffcount: 0, manifest: passed, fsv: passed, passedcount: 5 byte-for-byte. Each evidence bundle is also a new class of training data. The artifact argues, with citations, that a bundle is a training-data class distinct from web text, pure model-generated synthetic data, and rejection-sampled chain-of-thought. The proposed name is audited execution traces with cryptographic provenance. Most of the bytes are deterministic functions of the public O*NET ZIP rather than model output; model outputs are paired in the same record with the deterministic observed target plus random-init / shuffled-target baselines; counterfactual ablations and failed runs are persisted as first-class records. Used carefully, this corpus carries substantially lower model-collapse hazard than typical synthetic data (Shumailov et al., Nature 2024; Gerstgrasser et al., 2024). Failed runs are kept on purpose. Most synthetic-data pipelines discard rejected samples; this artifact preserves them. That choice is the difference between recursion-with-replacement (which Shumailov showed causes collapse) and accumulation (which Gerstgrasser showed avoids it). Reviewer command CONTEXTGRAPHBIN=bin/context-graph ./reproduce.sh verify-aggregate --aggregate bundles/20260502Treleasedgatev3papersmallmultiseedaggregate --reference referencereleasev2.0.0.json --json Archive contents and SHA-256 hashes mejepa5090artifactv2.0.0rc1.tar.gz — complete release archive, SHA-256 91461515e29c851017ef9bdd5fb584ed6bc404abedca52be4b8107fb3d4b1a01, size 7,430,206,664 bytes. bin/context-graph — single Rust binary that runs the entire pipeline (ingest, panel, train, predict, plan, verify), SHA-256 e6013ccb72e1878e6229e5e43c8d317b5db5c46ba794b99bdbbe91a942589494. container/contextgraph-mejepa.docker.tar — deterministic Docker image, SHA-256 830304d56887b54d72c34f51c05176f2c39557e97829468fab379f403ae1940b. container/contextgraph-mejepa.sif — Apptainer/SingularityCE image built from the Docker tar via docker-archive bootstrap, SHA-256 78c87c55406996d711f4ecff7c12fe66610dc8d53110766784cf7ed80f386bad. bundles/20260502Treleasedgatev3papersmallmultiseedaggregate — five-seed aggregate with paper tables, FSV report, and pairwise-MI audit. bundles/20260502Treleasedgatev3papersmallseed42 — one full passed seed bundle for manual source-of-truth inspection. referencereleasev2.0.0.json — checked-in numeric and structural release reference, SHA-256 70eebc518feb8786c006cbc02bd4df00bebaa42ac29fdc6998d60da74acd9b57. archivefilehashes.json, releasemanifest.json, checksums.txt — byte-level provenance. Headline numbers Career-taxonomy validation cosine 0.905 ± 0.044, BCa 95% CI 0.861–0.931 (n = 5 seeds, BCa bootstrap 10,000 iterations, seed 20260430). counterworld: 0.99963 / 0.99916 (480 trainable parameters). gridworld5x5: 0.99473 / 0.99472 (16,960 trainable parameters). careertaxonomy A1 panel: 15,344 trainable parameters. Full FSV integration suite passes in 190.92 s. Full release-C gate (5 seeds + aggregate + container build + container verify + manual edges) fits in ~2 hours wall time on the documented host. Hardware and runtime NVIDIA GeForce RTX 5090 (sm120, 32 GiB VRAM, CUDA 13.2). Reproduction requires a comparable GPU and uses the NVIDIA container runtime with --gpus all. Apptainer / SingularityCE 4.x recommended for the SIF execution path; Docker 24+ for the Docker tar path. Data boundary The career benchmark is generated deterministically from the public O*NET 30.2 text database. It is a public taxonomy benchmark, not real recruiting history. The packaged selected bundle records O*NET source ZIP SHA-256 b5479271931796b838f7173dc0f673a9ec961b7833ac87168fd11e92e7453741 and row count 1000 in datamanifest.json. Where the paper is A two-column publication-ready LaTeX manuscript (17 pages) is included inside the archive at docs/5090jepa/researchpaper/paper.tex and paper.pdf. The paper develops the runtime, the public-taxonomy benchmark, the full-state-verification protocol, and the new training-data class argument. Citation Cite the specific version DOI for reproducibility: 10.5281/zenodo.19977981. To cite all versions of this artifact, use the concept DOI: 10.5281/zenodo.19953950. License Code: PolyForm Noncommercial 1.0.0. Bundle data and generated paper tables: CC BY 4.0. Third-party data (O*NET 30.2): retains its CC BY 4.0 license; full attribution in datamanifest.json and THIRDPARTYLICENSES/ONET.md inside every bundle. Reproducibility note Per PyTorch's reproducibility guidance, exact GPU bit-reproducibility across releases or hardware is not guaranteed; the release reference therefore uses a structural + numeric-tolerance schema rather than byte-equal model-weight diffs. Failed runs are intentionally preserved in the archive as evidence; the training-data class argument depends on this property.

Summary

The authors identify 'model collapse,' a degenerative process where generative models trained on the output of their predecessors forget the tails of the original data distribution. This effect is demonstrated across Gaussian Mixture Models, Variational Autoencoders, and Large Language Models, showing that access to human-generated data is essential to prevent this decay.

machine-generated · gemma4:31b

In simple words

Imagine you make a copy of a copy of a copy. Each time, some small details are lost. If a computer program learns from its own old work instead of from real people, it starts to forget the rare things that happen in the world. Eventually, it only remembers the most common things and then makes mistakes. It becomes like a blind person trying to describe a world they have only heard about from other blind people.

machine-generated · gemma4:31b

Outline

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Argument

  1. Generative models are trained on datasets that are approximations of a true distribution.
    Assumption
  2. Finite sampling leads to statistical approximation errors, causing the model to miss rare events (the tails).
    Mathematical proof using discrete distributions and Markov Chains
  3. Functional approximation errors further compound these deviations from the true distribution.
    Theoretical analysis of 1D Gaussians and Wasserstein-2 distance
  4. When a model is trained on data generated by its predecessor, these errors accumulate over generations.
    Empirical results from GMMs and VAEs showing convergence to point estimates
  5. This recursive loop leads to 'model collapse,' where the model eventually misperceives reality entirely.
    Experimental evidence using OPT-125m LLM on wikitext2 dataset

machine-generated · gemma4:31b

Assumptions

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Claims

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Methods

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Limitations

admitted by authors:

noticed by the model, not admitted:

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Key equations

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Proof sketch

  1. The authors model recursive training as a Markov Chain where delta functions are absorbing states, ensuring eventual convergence to a single point.
  2. They use a 1D Gaussian toy model to analytically show that variance diverges linearly over generations due to finite sampling noise.
  3. They extend this to a general lower bound using the Wasserstein-2 distance, demonstrating that risk grows with each generation.
  4. The argument concludes that without superlinear growth in sample size or access to original human data, generative models inevitably diverge from reality.

machine-generated · gemma4:31b

Open questions

machine-generated · gemma4:31b

Cited by

Discussions

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