schema.md

Scene2Wave packaged release schema

The Hub release stores each formal sample as one uncompressed tar. The complete unpacked field reference is retained in metadata/raw_dataset_schema.md; the machine-readable JSON Schema is metadata/json_schema.json.

Archive index

Each line of metadata/samples.jsonl contains the original public sample index fields plus:

• archive_path: repository-relative tar path;
• archive_bytes: exact archive size;
• archive_sha256: lowercase SHA-256 digest.

relative_path preserves the original unpacked sample location for provenance. Use archive_path when reading this packaged release.

Archive member root

Each tar contains:

./sample_metadata.json
./carla/
./sionna/

Archive names and checksums are authoritative in metadata/samples.jsonl and checksums.sha256. Archives are deterministic: sorted member order, numeric owner/group zero, and normalized modification time.

Safe extraction

The release archives are created from project-controlled relative paths. A generic application should nevertheless reject absolute paths and .. path components before extracting any tar obtained from an untrusted source.

Python 3.12 or newer can use tarfile.extractall(..., filter="data"). For earlier Python versions, inspect members before extraction or read files with extractfile() as demonstrated in README.md.