Loading…

Coverage

20,438 of 56,681 columns decided — 36.1% · 4,487 bound (7.9%) · 36,243 still unread

Bound: 4,487; 7.9%; a concept was found and asserted for the column.
Refused: 10,870; 19.2%; the column was read and no concept fits. A verdict, not a gap.
Insufficient: 5,081; 9.0%; read, but the evidence did not settle it.
Unanalysed: 36,243; 63.9%; nobody has read this column yet.

56,681 columns in the coverage ledger · read from /api/field-coverage on citytap-prod · source last observed Oct 10, 2026, 10:53 AM

Where the unread columns are

3,026 datasets, 56,681 catalogued fields, 36,243 of them still unread. Every band below is a share of that, worst first. Open one to see its datasets.

Gaps in the data behind this page

36,243 of the 56,681 columns in the coverage ledger have never been analysed.
603 of the 3,026 datasets in the catalog list no columns at all.

Source last observed Oct 10, 2026, 10:53 AM.

Where each note comes from

36,243 of the 56,681 columns in the coverage ledger have never been analysed.
36,243 / 56,681
Source: /api/field-coverage
Check it yourself: /api/field-coverage#/coverage/unanalysed
603 of the 3,026 datasets in the catalog list no columns at all.
603 / 3,026
Source: /api/field-coverage
Check it yourself: /api/field-coverage#/catalog/datasets_no_inventory

These pages state their own gaps: /datasets, /freshness, /scorecard, /scorecard/fields, /analyses, /ontology, /graph, /alerts, any topic page under /domains.

What we have understood

Freshness above is about the data being current. This is about the data being understood: how many of the catalogue's fields carry a meaning we can act on, which datasets are still waiting, and how far the joinable web reaches.

← Citywide scorecard

Datasets by how much of them we have read

Filtered to datasets carrying borough. Clear

Datasets with the most fields left to read

Showing 1–50 of 555
Dataset	Fields	Decided	Understood	Nobody looked	Shared terms
2018 DOE High School Directory vw9i-7mzq	462	137 30%	7	325	5	See every field
2019 DOE High School Directory uq7m-95z8	462	344 74%	26	118	5	See every field
Property Valuation and Assessment data Tax Classes 2,3,4 kevu-8hby	117	2 2%	1	115	1	See every field
Property Valuation and Assessment Data Tax Class 1 m8p6-tp4b	117	2 2%	1	115	1	See every field
DOB NOW: Build – Job Application Filings w9ak-ipjd	95	8 8%	2	87	2	See every field
DOB Job Application Filings ic3t-wcy2	95	10 11%	6	85	2	See every field
2018 Pre-K School Directory xck4-5xd5	85	12 14%	7	73	5	See every field
Internet Master Plan: Adoption and Infrastructure Data by Neighborhood fg5j-q5nk	77	6 8%	4	71	1	See every field
Primary Land Use Tax Lot Output (PLUTO) 64uk-42ks	108	38 35%	20	70	5	See every field
DOB NOW: Electrical Permit Applications dm9a-ab7w	83	13 16%	6	70	2	See every field
DOB NOW: Build Elevator Permit Applications kfp4-dz4h	82	14 17%	5	68	2	See every field
Property Exemption Detail muvi-b6kx	70	2 3%	2	68	1	See every field
DOE High School Directory 2013-2014 u553-m549	82	16 20%	7	66	7	See every field
Business Improvement District (BID) Trends Report (FY25) hzd8-k2vv	64	1 2%	1	63	1	See every field
Centerline inkn-q76z	64	2 3%	1	62	1	See every field
NYCgov Poverty Measure Data (2014) aqqw-n6ec	61	1 2%	1	60	1	See every field
2016 DOE High School Directory 7crd-d9xh	67	8 12%	5	59	5	See every field
DOF: Cooperative Comparable Rental Income – Staten Island – FY 2011/2012 2zbg-i8fx	69	11 16%	4	58	4	See every field
DOF: Cooperative Comparable Rental Income – Brooklyn – FY 2011/2012 irhv-jqz7	69	11 16%	3	58	3	See every field
2014 - 2015 DOE High School Directory n3p6-zve2	69	14 20%	5	55	5	See every field
Energy Usage From DOE Buildings mq6n-s45c	62	8 13%	5	54	5	See every field
Historical DOB Permit Issuance bty7-2jhb	60	8 13%	3	52	3	See every field
DOB Permit Issuance ipu4-2q9a	60	8 13%	4	52	2	See every field
2017 DOE High School Directory s3k6-pzi2	462	412 89%	29	50	5	See every field
Suitability of City-Owned and Leased Property for Urban Agriculture (LL 48 of 2011) 4e2n-s75z	75	26 35%	18	49	7	See every field
Housing Database Project Level Files br6q-ssj3	68	19 28%	11	49	6	See every field
Citywide Public Computer Centers sejx-2gn3	61	15 25%	9	46	6	See every field
Neighborhood Financial Health Digital Mapping and Data Tool r3dx-pew9	52	6 12%	1	46	1	See every field
News Coverage of Intimate Partner Homicides in New York City (2013-16) 36qa-cicj	48	2 4%	2	46	2	See every field
2005 Street Tree Census 29bw-z7pj	59	16 27%	4	43	3	See every field
Forestry Work Orders bdjm-n7q4	56	14 25%	3	42	2	See every field
NewYorkCity_StreetTreeCensus_2005 urik-ndeg	49	7 14%	2	42	2	See every field
Commissioner's Correspondence b4mf-rg6h	45	3 7%	1	42	1	See every field
Speed Reducer Tracking System (SRTS) 9n6h-pt9g	43	1 2%	1	42	1	See every field
Public Design Commission Outdoor Public Art Inventory 2pg3-gcaa	43	2 5%	1	41	1	See every field
2020-2021 Demographic Snapshot Borough vquv-pjuh	42	1 2%	1	41	1	See every field
Commercial Bicycle Unit Inspections (Historical) tg3t-nh4h	51	11 22%	8	40	6	See every field
Department for the Aging (NYC Aging) - Senior Center Local Law 140 Provider Data - FY 2020 ygfr-ij6t	49	9 18%	5	40	5	See every field
DOF: Condominium Comparable Rental Income –Staten Island – FY 2009/2010 wv4q-e75v	46	7 15%	5	39	5	See every field
DOB NOW: Build – Approved Permits rbx6-tga4	46	8 17%	4	38	4	See every field
DOB NOW: Safety – Facades Compliance Filings xubg-57si	40	2 5%	2 1 matched by name, unread	38	2	See every field
Street Construction Permits (2013-2021) c9sj-fmsg	39	1 3%	1	38	1	See every field
Statistical Summary Period Attendance Reporting (PAR) hrsu-3w2q	39	1 3%	1	38	1	See every field
Street Construction Permits (2022 - Present) tqtj-sjs8	39	1 3%	1	38	1	See every field
Forestry Service Requests mu46-p9is	51	14 27%	4	37	2	See every field
2019-20 Demographic Snapshot - Borough 2a5f-5ryi	38	1 3%	1	37	1	See every field
2018-2019 Demographic Snapshot by Borough uh2w-zjsn	38	1 3%	1	37	1	See every field
2013 - 2018 Demographic Snapshot Borough v9z6-t6nq	38	1 3%	1	37	1	See every field
Self-Reported Drinking Water Tank Inspection Results gjm4-k24g	47	11 23%	7	36	4	See every field
DOF: Condominium Comparable Rental Income – Staten Island – FY 2008/2009 cyfw-hfqk	46	11 24%	5	35	5	See every field

The web of datasets and fields

A line means a dataset carries a field tagged with a shared vocabulary term. Two datasets on the same term speak the same language about it, which is what makes a cross-dataset question possible. Sharing a term is not the same as a working join — the dataset page says whether a specific pair compiles.

Bipartite. A dimension node is a conformed-dimension family; a dataset node is a catalog dataset; an edge means that dataset carries at least one column tagged with that dimension, and names the columns that carry it.

No field list yet: We hold no columns for these at all.
Nothing read yet: We hold their columns and have decided none of them.
Under half read: Fewer than half their fields carry a verdict.
Half read: At least half their fields carry a verdict.
Most read: At least three quarters of their fields carry a verdict.
Every field decided: Every field carries a verdict — which does not mean every field is understood.

How many of an edge's tagging columns carry a method that actually read something. Zero means the edge rests entirely on carried lexical tags.

Two datasets on the same dimension node share a vocabulary, which is weaker than a join. GET /api/datasets/{fourFour}/bindings/{partner} decides whether a specific pair compiles; executing it additionally needs both marts present.