Knowledge Vault
The city's source of truth—documents, streams, and systems unified into a governed knowledge graph with citations and lineage.
What It Is
Knowledge Vault is LaplaceX's canonical store for city entities, events, and documents. It ingests from parking, mobility, safety, energy and back-office systems, normalizes schemas, resolves duplicates, tags sensitive fields, and preserves evidence trails so every answer is explainable.
Why It Matters
Single Source of Truth
One unified graph for assets, places, incidents, and policies—eliminating data silos and conflicting information across departments.
Explainability
Every fact links to citations and version history—complete data lineage ensures decisions are traceable and auditable.
Governance by Default
Policy tags, data residency, and access scopes are enforced automatically—compliance is built into the architecture.
How It Works
Ingest
Connectors for APIs, streams, files
Normalize
Schema registry & data contracts
Resolve
Entity matching & merge logic
Tag
PII, purpose, region classification
Link
Build graph relationships
Serve
APIs for CQ, Insights, Orchestrator
Audit
Lineage & version tracking
Key Capabilities
Connectors: SQL/APIs/streams/IoT + document/CSV/PDF ingestion
Schema registry & data contracts (versioned)
Entity resolution (rules + ML) & conflict policies
Policy tags: PII/PHI, residency (UK/EU/MENA), purpose limits
Full lineage: source → transformation → consumer
Time-travel/versioned snapshots
Vector & graph indexes (semantic + relational)
Citations panel for every answer (used by Cognitive Query)
Export to BI/SIEM; SDK & REST/Graph APIs
Entity & Lineage Explorer
Explore how city data becomes a unified, traceable knowledge graph
Proven Outcomes
Use Cases
Parking & Mobility
Canonical car-park and occupancy history for accurate predictions. Link parking events to traffic patterns and maintenance schedules.
Learn MorePublic Safety
Incident–asset–work-order linkage for faster triage. Connect emergency responses to infrastructure and historical patterns.
Learn MoreEnergy & Facilities
Asset registry with complete maintenance lineage. Track energy consumption patterns and predict infrastructure needs.
Explore PlatformAPI Integration
Programmatic access to the knowledge graph with full lineage and citations
// POST /api/kv/resolve
{
"type": "carpark",
"candidates": ["cp101", "cp101_alt"],
"policy": "prefer:official_id"
}
// Response
{
"id": "cp101",
"merged": ["cp101_alt"],
"lineage": [
{
"source": "parking_api",
"timestamp": "2024-01-15T14:30:00Z",
"confidence": 0.95
}
]
}// GET /api/kv/entity/cp101?with=lineage,citations
// Response
{
"id": "cp101",
"attrs": {
"name": "CarPark 101",
"capacity": 450,
"location": [25.12, 55.17]
},
"edges": [
{"to": "inc42", "label": "locationOf"}
],
"lineage": [...],
"citations": [
"s3://city/parking/2025-09-14/...",
"api.parking.local/v1/carparks/101"
]
}Frequently Asked Questions
How do you prevent hallucinations?
All responses are grounded in the Knowledge Vault. If there's no evidence for a claim, the system returns no answer rather than guessing. Every fact includes citations to source data.
Can we keep data in-region?
Yes—data residency tags automatically route storage and compute to appropriate regions (UK, EU, MENA, etc.). Processing stays within designated boundaries for compliance.
How is access controlled?
RBAC/ABAC with row and column-level filters ensure users only see authorized data. All access is logged with full audit trails for compliance and security reviews.
Turn Scattered Datasets into an Explainable Knowledge Graph
Unify your city's data sources with complete lineage, governance, and explainability. Transform fragmented information into a trusted foundation for AI-powered decision making.