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
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.
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.
Video relationship
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.
These conditions are not equivalent to canonical v1 frozen evaluation, which disables both plasticity and task-triggered DAN stimulation.
The paired historical After repository is ../after.
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
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.
Directory contents
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
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.
Integrity
SHA256SUMS records the exact hashes of the original checkpoint files selected for publication. Verify the checkpoint before use.
License and upstream attribution
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.