Fly Brain Sparsity — run artefacts
Checkpoints and run artefacts produced by the fly-brain-sparsity research project. This repo is a dump target for automated runs, not a curated model release: files land here as jobs finish on the project's RTX 4090, so that runs executed on one machine are addressable from another.
Treat everything here as intermediate output. A checkpoint is uploaded because a run produced it, not because it was selected, validated, or is recommended for anything.
What the project is
Take a dense neural network at fruit-fly scale (~139k units / ~54.5M connections) and sparsify it toward the fly connectome's ~0.3% connection density, while approaching the fly's performance on movement tasks, energy efficiency, and out-of-distribution robustness.
The central hypothesis, stated so it can be falsified: random sparsity at fly density fails; connectome-like topology is what makes extreme sparsity work.
Layout
<job-id>/<model_id>.pt
job-id is the queue job that produced the file and is unique per run. Each
run's metrics, config and log live in the project repository under
results/<task-gid>/<job-id>/, and the job record there carries the
result.artefacts entry pointing at the file here.
The job-id prefix here is authoritative and always was — it is taken from the
queue job, not from the producing script's own idea of where it lives.
Files uploaded before 2026-09-16 came from runs whose local artefact directory
was named after an unrelated ticket, because both experiment scripts resolved
that directory against a hardcoded task id. That is fixed upstream; it never
affected the paths in this repo, because the upload is keyed by job-id
precisely so a local defect could not reach a public surface.
Attribution — required
Network topologies in this project are derived from two connectome datasets, both CC BY 4.0, whose only obligation is attribution. That obligation travels with anything derived from them, including these weights:
FlyWire (whole adult brain, snapshot 783)
Dorkenwald et al., "Neuronal wiring diagram of an adult brain", Nature 634 (2024); Schlegel et al., "Whole-brain annotation and multi-connectome cell typing of Drosophila", Nature 634 (2024). Princeton University (Murthy and Seung labs) with the FlyWire Consortium, on the FAFB EM volume (Zheng et al. 2018). Cite the consortium, not the tooling.
MANC (male adult ventral nerve cord, v1.0)
Takemura et al. and Marin et al., eLife (2024); Janelia FlyEM.
Licence
Artefacts here are released CC BY 4.0, matching the upstream connectome data they are derived from.