: Evaluating specific hazards for each task.

URE093 is a specific archaeological specimen identifier used in the study of Fremont culture ceramics, specifically referring to a sample of Snake Valley Corrugated pottery recovered from the Evans Mound site (42IN43) in Utah's Parowan Valley. Archaeological Context of URE093

Ure093 does own item data. It expects a Catalog Service with endpoint:

// ----- internal helpers ----- _sign(payload) // Simple client‑side HMAC (for demo only – production uses server‑side signing) // In real world, we send payload to a signing service or use AWS SigV4. return ''; // placeholder

| # | Requirement | Description | |---|-------------|-------------| | | Tag Capture | SDK must expose addTag(tag:string, itemId:string) and removeTag(tag:string, itemId:string) . Each call sends a signed event to the API. | | FR‑2 | Real‑time Profile Update | Upon receipt of a tag event, the user’s profile in Redis is updated: weight(tag) += 1 (or custom delta). | | FR‑3 | Recommendation Request | Front‑end calls GET /recommend?userId=…&zone=home&pageId=…&limit=10 . The service returns an ordered array of itemId s and optional meta (score, matched tags). | | FR‑4 | Context‑Aware Ranking | The algorithm must consider (a) tag weights, (b) zone‑specific boost, (c) freshness decay, (d) explicit negative feedback (e.g., hideItem ). | | FR‑5 | Multi‑Tenant Isolation | All data is namespaced by tenantId . Tenants cannot read each other’s profiles. | | FR‑6 | Privacy Controls | If the user opts out, the SDK stops sending events and the back‑end purges the profile after 30 days. | | FR‑7 | Model Extensibility | Tenants may upload a Python script ( score(item, profile, context) ) that overrides the default ranking logic via a webhook. | | FR‑8 | Admin Dashboard | UI to view top tags per tenant, tag‑weight heatmaps, and recommendation health (latency, error rate). | | FR‑9 | A/B Testing | Ability to toggle Ure093 on/off for a percentage of users and capture KPI differences. | | FR‑10 | SDK Versioning | SDK must expose its version and support graceful fallback to a previous version. |