| # Community-1 artifact provenance |
|
|
| This document covers the supported Community-1 artifacts in repository snapshot |
| `1ed7a662fdc7109e36d822db793ee6eebdaf8594`. Exact artifact hashes are recorded |
| in `provenance.json`. |
|
|
| ## Source mapping |
|
|
| | Converted artifact | Upstream input | |
| | --- | --- | |
| | `Segmentation` | `segmentation/pytorch_model.bin` | |
| | `Embedding` | `embedding/pytorch_model.bin` (WeSpeaker ResNet34) | |
| | `FBank` | Feature-extraction graph configured from the embedding checkpoint; no separate learned checkpoint | |
| | `PLDA`, `PldaRho` | `plda/plda.npz`, `plda/xvec_transform.npz` | |
| | PLDA JSON resources | The same two NPZ files, serialized as Float32 tensors | |
|
|
| The immutable upstream reference snapshot is |
| `pyannote/speaker-diarization-community-1@3533c8cf8e369892e6b79ff1bf80f7b0286a54ee`. |
| Its relevant file history identifies checkpoint commit |
| `5428423440de6baac451412694bb79a0ad644bea` and PLDA import commit |
| `7aa6699f402495053a3898e112874cb3e68ee064`. |
|
|
| The PLDA files are byte-identical to the BUT Speech@FIT files with these hashes: |
|
|
| | File | SHA-256 | |
| | --- | --- | |
| | `plda.npz` | `9b77bcd840692710dd3496f62ecfeed8d8e5f002fd991b785079b244eab7d255` | |
| | `xvec_transform.npz` | `325f1ce8e48f7e55e9c8aa47e05d2766b7c48c4b25b8de8dd751e7a4cc5fbe8f` | |
|
|
| All six tensors in the two published JSON resources exactly match these inputs |
| after conversion to Float32. The six constants derived by the published PLDA |
| transformation also occur byte-for-byte in `PldaRho.mlmodelc` at the locations |
| referenced by its MIL graph. |
|
|
| ## Recorded conversion environment |
|
|
| The modern artifacts record: |
|
|
| - PyTorch 2.8.0 |
| - coremltools 9.0b1 |
| - TorchScript source dialect |
| - coremlc 3500.32.1 |
| - MIL component 3500.14.1 |
|
|
| The public conversion reference is Mobius commit |
| `33fd6eab634966ae7db4d73da3376a90379642fb`, including conversion and |
| compilation scripts plus the locked Python environment. That commit postdates |
| the artifact conversion dates, so it is a reference implementation rather than |
| an attestation of the exact historical build. |
|
|
| ## Reproducible successor pipeline |
|
|
| Mobius commit `ffbc3c8cae2d0ac83912a005a25a2874ced98a3a` adds a release command that: |
|
|
| 1. Rejects mutable or abbreviated upstream revisions. |
| 2. Downloads material inputs from the selected immutable revision. |
| 3. Embeds source paths, hashes, upstream revision, and converter revision in the |
| generated Core ML packages and JSON resources. |
| 4. Compiles the packages and emits `provenance.json` containing every input and |
| output SHA-256 plus the build environment and commands. |
| 5. Refuses release builds from a dirty converter checkout. |
|
|
| Example: |
|
|
| ```bash |
| uv run python build-release.py \ |
| --upstream-revision 3533c8cf8e369892e6b79ff1bf80f7b0286a54ee \ |
| --work-dir ./build/community-1-3533c8cf \ |
| --release-dir ./build/release-3533c8cf \ |
| --selective-fp16 |
| ``` |
|
|
| Access to the gated upstream model and acceptance of its user conditions are |
| required. |
|
|
| ## Historical limitations |
|
|
| - The exact upstream checkout used for the original 2025 segmentation and |
| embedding exports was not recorded. |
| - The exact historical converter commit, invocation, Xcode installation, and |
| SDK were not recorded. |
| - The existing segmentation and embedding artifacts therefore remain |
| historically reconstructed, not build-attested. |
| - The older `pyannote_segmentation` and `wespeaker*` artifacts are outside this |
| document's scope. |
|
|
