Cross-domain evidence graph

Observatory atlas

Follow documented connections between markets, firms, places, publications, and sources. A connection shows a recorded relationship, not that two measures describe the same market.

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More atlas tools4 exact routes

Live family topologyResearch

Current focusHow HHI Helps Explain M...547 records / 9 family pairs

Canonical nodes5,4785433 public profiles

Declared edges19,193exact encoded links

Node families13bounded domains

Inferred links0name-only joins

Encoded hereProfile-to-indicator observations, issue-program scope, source custody, market participation, official attribution, declared industry context, publication scope, and dated policy relationships.

Never inferred hereSubstitutability, ownership, control, liability, causation, or comparability across unlike measures.

Read evidence standard

Graph census · Research

Who the Atlas connects

Every lane is an exact family-pair contract in the active semantic lens, ranked by encoded edge count.

8 of 13families connectedTop 8 routes carry 99.6% of active-layer edges.

Active-lens edges: 547; Research
Family-pair routes: 9; exact family contracts
Cross-family pairs: 9; between unlike families
Self-family pairs: 0; within one family

Open the complete relationship matrixScan all 91 possible family contracts by edge volume or source custody, including explicit structural zeros.

Inspect the remaining 1 family-pair routes2 links · 0.4% of active-layer edges

09IndicatorsSourcesResearch layer · open complete contract dossier20.4%

Graph query

Build a declared relationship neighborhood

Find a nodeRelationship layerSemantic contractNeighbor type

Network depth

PublicationsHow HHI Helps Explain Market ConcentrationResearch / 1 hop / all neighbors

Semantic classificationAll 39 relationship contracts remain distinctRead ontology

Choose one exact semantic contract to rebuild the topology, neighborhood, diagnostics, ledger, and public exports around only that declared edge type.

Focused evidence graph

How HHI Helps Explain M...

9 connected nodes in this bounded slice

Visible nodes: 9; of 9
Visible edges: 8; declared links
Direct links: 8; from focus
Hidden nodes: 0; plot cap only

Direct neighborhood8

Markets12Products55Operators20Industries1866Issues6Topics8Questions46Places3270Indicators30Records14Named entities21Publications85Sources45

PublicationsHow HHI Helps Explain Market Concentration3 linked markets

Evidence sources: 3
Status: published
Declared links: 8
Latest year: 2026

An open explainer on HHI, CR4, effective number of firms, and why source coverage matters.

Open canonical profile

Analysis handoff6

No indicator row is keyed directly to this profile. These analytical contexts are one declared graph hop away.

Direct relationships8

Direct relationship fingerprint

How How HHI Helps Explain M... is declared in the Atlas

Research / direct focus links / no composite score

Counterparties: 8; Unique canonical endpoints
Encoded links: 8; Exact focus edges
Source custody: 37.5%; 3 source-bearing links
Profile families: 3; Direct counterparty types

Counterparty compositionDirect nodes by profile family

Unique endpoints / active layer

Markets3 encoded edges

Sources3 encoded edges

Topics2 encoded edges

Declared counterpartiesCarry exact endpoints into deeper analysis

8 available

1 edge1 source-bearing

1 edge0 source-bearing

Relationship ledger

Every plotted line remains an inspectable record

8 edges survive the current focus, depth, node-type, layer, and semantic-type contract.

ResearchCovered market profilereport market

How HHI Helps Explain Market Concentration explicitly lists U.S. browser usage in its related-market scope.

ResearchCovered market profilereport market

How HHI Helps Explain Market Concentration explicitly lists U.S. search engine usage in its related-market scope.

ResearchCovered market profilereport market

How HHI Helps Explain Market Concentration explicitly lists U.S. mobile wireless service in its related-market scope.

ResearchDeclared publication sourcereport source

2024 Communications Marketplace Report appears in the report's encoded source basis.

ResearchDeclared publication sourcereport source

Browser market share in United States of America, April 2023-April 2026 appears in the report's encoded source basis.

ResearchDeclared publication sourcereport source

Search engine market share in United States of America, April 2023-April 2026 appears in the report's encoded source basis.

ResearchDeclared topic membershiptopic publication

AR-MM-2026-01, How HHI Helps Explain Market Concentration, carries the exact Market Structure publication-theme membership.

ResearchDeclared topic membershiptopic publication

AR-MM-2026-01, How HHI Helps Explain Market Concentration, carries the exact Methods and Public Data publication-theme membership.

Showing 8 of 8 exact relationships. The complete filtered ledger remains available in CSV.

Graph contract

Relationship families stay separate

The atlas joins routes through encoded custody and context, never through name resemblance or an inferred corporate, legal, or causal relationship.

The atlas exposes only relationships declared in the current public data. A link or issue grouping does not make unlike measures comparable, establish ownership or control, define an antitrust market, assign liability, or show that a policy event caused an economic outcome.

Reusable graph packet

Carry node and edge custody into analysis

The packet preserves node type, canonical route, relationship family, source link, evidence label, confidence, and edge-specific guardrail.

Data CubeExact U.S. browser usage observation slice VizBuilderMarket HHI / trend lens JSON graph/api/public/atlas?focus=report%3Arep-hhi-primer&layer=research&depth=1 CSV edge ledgerComplete exact relationship slice