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CITATION.cff

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+cff-version: 1.2.0
+message: "If you use this dataset, please cite it."
+title: "PPMI Connectivity Graphs — Derivatives (HF Staging)"
+version: "1.0.0"
+date-released: "2025-08-24"
+authors:
+  - family-names: "Lau"
+    given-names: "Pak Kin"
+identifiers: []
+preferred-citation:
+  type: dataset
+  title: "PPMI Connectivity Graphs — Derivatives (HF Staging)"
+  authors:
+    - family-names: "Lau"
+      given-names: "Pak Kin"
+  year: 2025
+  version: "1.0.0"

LICENSE

@@ -0,0 +1,9 @@
+This repository contains two licensing regimes:
+
+1) DATA (everything under data/, participants.tsv, phenotype/, and metadata tables):
+   Creative Commons Attribution–NonCommercial–ShareAlike 4.0 International (CC BY-NC-SA 4.0)
+   https://creativecommons.org/licenses/by-nc-sa/4.0/
+
+2) CODE & DOCS (README.md, dataset_description.json, CITATION.cff, example snippets):
+   Apache License 2.0
+   https://www.apache.org/licenses/LICENSE-2.0

README.md

@@ -1,3 +1,71 @@
----
-license: mit
----
+
+# PPMI Connectivity Graphs — HF Staging (Derivatives)
+
+This dataset ships **ready-to-use functional brain connectivity graphs** derived from the PPMI cohort in a BIDS-ish *derivatives* layout. For each subject and parcellation, we include:
+- **ROI time-series** (`*_desc-timeseries_parc-<name>.mat`)
+- **Pearson correlation connectivity matrix** (`*_desc-correlation_matrix_parc-<name>.mat`)
+- **JSON sidecars** with summary fields (nodes, measure, symmetric/weighted flags)
+
+## Contents
+```
+
+data/
+parc-<schema>/
+sub-<id>/
+sub-<id>\_desc-timeseries\_parc-<schema>.mat
+sub-<id>\_desc-correlation\_matrix\_parc-<schema>.mat
+\*.json
+manifests/
+manifest.jsonl                # one JSON object per raw file (sha256, bytes, target\_rel)
+participants.tsv
+phenotype/                      # subject-level variables (if present)
+metadata/
+raw/                          # resources & summaries used to build the set
+artifacts/                    # inventory, checks, B5 manifest & reports
+provenance/                   # author notes, dataset summaries, exclusions
+
+````
+
+## Quick start (Python)
+```python
+from huggingface_hub import snapshot_download
+from pathlib import Path
+from scipy.io import loadmat
+
+root = Path(snapshot_download(repo_id="<org>/<dataset>", repo_type="dataset", revision="<tag>"))
+pid, parc = "sub-prodromal75492", "ward100"
+ts = loadmat(root / f"data/parc-{parc}/{pid}/{pid}_desc-timeseries_parc-{parc}.mat")
+cm = loadmat(root / f"data/parc-{parc}/{pid}/{pid}_desc-correlation_matrix_parc-{parc}.mat")
+
+# common variable names (fallback-friendly)
+X = next((ts.get(k) for k in ["features_timeseries","timeseries","X"] if k in ts), None)   # (nodes × time)
+A = next((cm.get(k) for k in ["correlation_matrix","corr","A"] if k in cm), None)          # (nodes × nodes)
+print("Timeseries:", None if X is None else X.shape, "  Connectivity:", None if A is None else A.shape)
+````
+
+## Cohort & Metadata
+
+* `participants.tsv` (+ optional `participants.json`)
+* `phenotype/` (subject-level variables)
+* `metadata/raw/`, `metadata/artifacts/`, `metadata/provenance/` (provenance, inventories, checks)
+* JSON sidecars colocated with `.mat` under `data/`
+* Parquet mirrors (optional, if you add them later)
+
+## Integrity
+
+* A machine manifest lives at `manifests/manifest.jsonl` (one JSON object per raw file) with SHA-256 and byte size.
+* You can re-compute and verify locally if needed.
+
+## License
+
+* **Data** (everything under `data/`, `participants.tsv`, `phenotype/`, and `metadata` tables): **CC BY-NC-SA 4.0**.
+* **Docs & examples** (this README, helper scripts): **Apache-2.0**.
+  See `LICENSE` for details.
+
+## How to cite
+
+See `CITATION.cff`. Please also acknowledge **PPMI** and the original derivative providers.
+
+## Changelog
+
+* **v1.0.0** — Initial HF release: multi-schema connectivity with cohort tables & provenance.

data/parc-AAL116/sub-control100890/sub-control100890_desc-corr_parc-AAL116_connectivity.json

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+  "Parcellation": "AAL116",
+  "NodeCount": 116,
+  "Measure": "PearsonCorrelation",
+  "Weighted": true,
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+  "FisherZ": false,
+  "SourceTimeseries": "sub-control100890_desc-timeseries_parc-AAL116.mat",
+  "GeneratedBy": [
+    {
+      "Name": "Author-provided PPMI graphs",
+      "Version": "v2",
+      "Description": "Reorganized by this repository into BIDS-like derivatives."
+    }
+  ]
+}

data/parc-AAL116/sub-control100890/sub-control100890_desc-correlation_matrix_parc-AAL116.json

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+  "GeneratedBy": [
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+      "Name": "Author-provided PPMI graphs",
+      "Version": "v2",
+      "Description": "Reorganized by this repository into BIDS-like derivatives."
+    }
+  ]
+}

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+      "Version": "v2",
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