Research Topic Comparison Studio

Compare research topics, publication histories, and shared evidence. Missing coverage remains visible and is not treated as a zero economic outcome.

Opening evidence topology20 repeated IDs

Topic universe: 8; institutional contracts
Opening set: 2; two to four at a time
Memberships: 71; exact selected assignments
Shared custody: 20; deduplicated identifiers
Boundary: No score; native counts remain separate

Comparison standard. Topics connect only through exact publication IDs, agenda-question IDs, issue-program IDs, dataset IDs, or route paths. Shared custody does not establish shared findings, methods, importance, legal relevance, or causation.

Evidence standard

Research program comparison

2 institutional topics

71 memberships / 51 unique items / reviewed through Jul 21, 2026

Comparison set

Select two to four research topics

2 / 4

Memberships: 71; Selected topic assignments
Unique items: 51; Deduplicated by lane and ID
Shared custody: 20; Exact items in two or more topics
Coverage cells: 10/10; 0 structural zeros
Shared datasets: 5; 2 shared publications

Comparative evidence note

What this selection establishes

Digital / Markets

01 / Common custody

20 exact items span every selected topic.

20 exact identifiers recur in two or more selected contracts. The widest pair is Digital Platforms with Market Structure: 20 shared items.

Shared in 2+: 20
Shared by all: 20
Shared publications: 2

Pubs 2 Agenda 12 Issues 1 Data 5 Routes 0

02 / Coverage frontier

5 of 5 lanes appear in every selected topic.

0 structural-zero cells remain across the selected contracts. A zero records the current editorial inventory, not the absence of relevant real-world evidence.

Universal: 5
Partial: 0
Absent: 0

Present across every topicPubs, Agenda, Issues, Data, and Routes

03 / Topic-specific files

31 of 51 items remain topic-specific.

Exclusive means assigned to one selected editorial contract. It does not rank research depth, policy importance, evidentiary quality, or legal relevance.

Digital9 exclusive / 20 shared5/5all lanes Markets22 exclusive / 20 shared5/5all lanes

Shared custody map

Only exact repeated identifiers create an edge

Series membership alone does not create a shared evidence item.

Exact selected-topic topology20 repeated IDs

Exact shared-item register

20 matching shared items

20 span every selected topic.

Publications2/2
Five Digital Gateways
AR-RB-2026-02 / 2026-07-20
Digital Markets
Publications2/2
Four digital usage systems traced four different structural paths.
AR-CI-2026-02 / 2026-08-12
Digital Markets
Agenda questions2/2
Which entry, exit, share, switching, price, quality, or capacity evidence can explain the movement inside this exact market boundary?
Mechanism / Browsers
Digital Markets
Agenda questions2/2
Which entry, exit, share, switching, price, quality, or capacity evidence can explain the movement inside this exact market boundary?
Mechanism / Mobile operating systems
Digital Markets
Agenda questions2/2
Which entry, exit, share, switching, price, quality, or capacity evidence can explain the movement inside this exact market boundary?
Mechanism / Search engines
Digital Markets
Agenda questions2/2
Which entry, exit, share, switching, price, quality, or capacity evidence can explain the movement inside this exact market boundary?
Mechanism / Social referrals
Digital Markets
Agenda questions2/2
Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?
Shares / Browsers
Digital Markets
Agenda questions2/2
Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?
Shares / Browsers
Digital Markets
Agenda questions2/2
Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?
Shares / Mobile operating systems
Digital Markets
Agenda questions2/2
Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?
Shares / Mobile operating systems
Digital Markets
Agenda questions2/2
Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?
Shares / Search engines
Digital Markets
Agenda questions2/2
Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?
Shares / Search engines
Digital Markets
Agenda questions2/2
Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?
Shares / Social referrals
Digital Markets
Agenda questions2/2
Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?
Shares / Social referrals
Digital Markets
Issue programs2/2
Digital platform gateways
How do defaults, distribution agreements, data access, and adjacent-platform positions shape entry across separately measured digital systems?
Digital Markets
Public datasets2/2
HHI change decomposition
105 rows / 29 fields
Digital Markets
Public datasets2/2
Market definitions
12 rows / 9 fields
Digital Markets
Public datasets2/2
Market profiles
12 rows / 38 fields
Digital Markets
Public datasets2/2
Market trend series
65 rows / 16 fields
Digital Markets
Public datasets2/2
Participant shares
162 rows / 8 fields
Digital Markets

Reproducibility contract

One selection, exact memberships, reusable rows.

The studio derives every matrix cell, edge, and register row from the same topic model published through the public data endpoint.

Exact join keys

Publication, agenda, issue, and dataset identifiers plus canonical route paths create the comparison ledger.

Visible structural zeros

Empty membership lanes remain explicit and are never imputed from adjacent research programs.

Portable evidence

Selected topic summaries and membership-level comparison packets are available as JSON and CSV.