SOURCE AUTHORITY AND REPRODUCIBILITY

Evidence Quality

Quality is communicated through source scope, versions, counts, explicit missingness, limitations, and reproducible lineage—not certainty language.

Source and scope

Identify the device, data type, date range, cohort authority, session or recovery scope, and transformation lineage.

Completeness

Show samples, duplicates, rejection reasons, missingness, quality flags, and what cannot be compared.

Reproducibility

Preserve versions, immutable source hashes where public-safe, deterministic output, and distinct scientific identities.

Terminology and source boundaries

FSI means Fractal Stability Index. CSS means Cohort Similarity Score. Tensor v0.3 is a separately versioned scientific identity. Descriptive return direction is not CSS, and a legacy burden ratio is not FSI.

WHOOP overnight recovery HRV/RMSSD is longitudinal recovery context. Kubios / Polar H10 session HRV is episodic session evidence. Neither scope should be silently substituted for the other.

Publication architecture

Standards Do Not Recompute Science

The FSI/CSS Evidence Observatory is first named on the case-study platform page. Static standards guidance does not depend on browser access to MCP, a database, or raw scientific files.

Individual Case Study & Evidence