| --- |
| license: cc-by-4.0 |
| language: |
| - en |
| tags: |
| - drosophila |
| - connectome |
| - computational-neuroscience |
| - neuromodulation |
| - synaptic-plasticity |
| - virtual-fly |
| - checkpoint |
| - reproducible-research |
| --- |
| |
| # virtual-fly historical video Before checkpoint |
|
|
| > **Lineage:** Historical Before-video state |
|
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| This directory contains the exact historical checkpoint used for the **Before** side of the published `virtual-fly` Before/After comparison video. It is intentionally separated from the current canonical initial checkpoint. |
|
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| Internal provenance: global weight version **240**, checkpoint neural step **26,224**, source experiment `flyppy-v7-envv7-frontier`. The public path deliberately omits `v240`; the version is retained here only as historical provenance. |
|
|
| ## Historical semantics |
|
|
| This checkpoint predates the explicit current population-checkpoint contract: its original manifest does **not** declare `global-weights-only-v1` or current class-DAN provenance. It must not be silently relabeled as a canonical checkpoint. Current population code intentionally rejects legacy population manifests unless historical replay is explicitly enabled with `VF_ALLOW_LEGACY_POPULATION_CHECKPOINT=1`. That compatibility opt-in is for intentional historical replay only. |
|
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| ## Video relationship |
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| The recorded Before playback used body v7 / environment v7, plasticity disabled during playback, and passed one gate under its historical evaluation condition. **This is not an untrained initial MaleCNS state:** v240 had already undergone 240 historical training episodes. The playback was not a held-out evaluation, and task-triggered PAM stimulation remained enabled even though plasticity was off. The historical lineage through v960 also used the older dopamine-source definition. |
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| These conditions are not equivalent to canonical v1 frozen evaluation, which disables both plasticity and task-triggered DAN stimulation. |
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| The paired historical After repository is [`../after`](../after). |
|
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| ## Source code and reproducibility |
|
|
| - Project overview: https://huggingface.co/shute2004/virtual-fly |
| - GitHub source: https://github.com/shute2004/virtual-fly |
| - Canonical package: https://github.com/shute2004/virtual-fly/tree/main/canonical/canonical-v1 |
| - Full artifact hash manifest: https://github.com/shute2004/virtual-fly/blob/main/release/huggingface/checkpoint-artifacts-v1.json |
|
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| The checkpoint is not self-contained without a compatible MaleCNS snapshot and the `virtual-fly` runtime. Raw MaleCNS is intentionally not mirrored here; obtain it from the official MaleCNS source or use the GitHub reproduction path. |
|
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| ## Directory contents |
|
|
| ```text |
| README.md |
| ATTRIBUTION.md |
| provenance.json |
| SHA256SUMS |
| checkpoint/ |
| manifest.json |
| membrane.f32le |
| spikes.u32le |
| refractory.u32le |
| activity-trace.f32le |
| modulation.f32le |
| weights.f32le |
| eligibility.f32le |
| ``` |
|
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| The checkpoint directory is kept in the native `virtual-fly` checkpoint layout so that the source repository can consume it without repacking. Raw MaleCNS source data and body assets are intentionally not included. |
|
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| ## Integrity |
|
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| `SHA256SUMS` records the exact hashes of the original checkpoint files selected for publication. Verify the checkpoint before use. |
|
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| ## License and upstream attribution |
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| The checkpoint artifact is distributed as **CC BY 4.0** because its weights derive from the CC BY 4.0 MaleCNS dataset. See `ATTRIBUTION.md`. Original `virtual-fly` source code and documentation remain MIT licensed. |
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|
