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pho-algorithmic-audit

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Solve Public Health Observatory (PHO) reproducible / transportability / robustness / mediation audit tasks that ship an analysis_request.json plus an answer_template.json and require pulling evidence only from the read-only PHO web portal named in environment_access.md (<TASK_ENV_BASE_URL>). Use whenever a task asks for a "registered audit", "algorithmic transportability audit", "six-module audit", "robustness gates", "controlled decision/classification", release/revision resolution, cohort construction, or deterministic statistical modules (fixed effects, ridge/elastic-net nested CV, wild cluster bootstrap-t, split/grouped conformal, trajectory PCA + k-means, GMM, Shapley, partial-R2 sensitivity) whose result must be returned as ONE JSON object conforming to a supplied answer template.

experiments/claude_code_opus_4_8_xhigh/reports/skills/task_group_023/fewshot/fewshot_attempt_02/SKILL.md

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Oct 29, 2026
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Apache-2.0

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# PHO Algorithmic Audit

## 1. What this family of tasks is

Each task is a self-contained analytical audit for the fictional **Public Health
Observatory**. You are given, per task:

- `input/prompt.txt` — the business framing and the pointer to the portal.
- `input/payloads/analysis_request.json` — the **authoritative specification**:
  scope, measures, filters, cohort definitions, module list, hyperparameters,
  seeds, reproducibility rules, gate thresholds, and decision mapping.
- `input/payloads/answer_template.json` — the **output contract**: exact top-level
  keys, per-field types, array lengths/orderings, enum vocabularies, and precision.
- `environment_access.md` (repo root) — the base URL and endpoint list for the
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