NOTICE: We're currently testing a new version of nomenklatura at opennames.org. This version has a different API and will require that you adapt your scripts. Please migrate any clients, as this site will be shut down eventually.

Nomenklatura is a simple service that makes it easy to maintain a canonical list of entities such as persons, companies or event streets and to match messy input, such as their names against that canonical list – for example, matching Acme Widgets, Acme Widgets Inc and Acme Widgets Incorporated to the canonical "Acme Widgets".

With Nomenklatura its a matters of minutes to set up your own set of master data to match against and it provides a simple user interface and API which you can then use do matching (the API is compatible with Open Refine's reconciliation function).

Nomenklatura can not only store the master set of entities you want to match against but also will learn and record the various aliases for a given entity - such as a person, organisation or place - may have in various datasets.

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Dataset Entities Aliases Unmatched
luisovich » adjudicatarios_tráfico 141 0 0
kroman0 » Cars 2 2 0
marians » Cologne Street Names 2802 271 1907
pudo » Country Names 256 0 0
ewheeler » current countries of earth 426 4 0
fab100 » Entreprises 1 0 0
noahpryor » Finance Firms 0 0 0
edwardsharp » foo 0 0 0
noahpryor » fooobar 0 0 0
klgilfillan » Fuel poverty 649 0 0
pudo » Kreise in Deutschland 403 357 0
hernamesbarbara » Law and Order Character Names 1 0 0
pudo » LobbyFacts.eu: Entities 30222 7398 16438
mihi-tr » Medientransparenzgesetz Oesterreich 682 1148 0
pudo » OffenesParlament Ablauftypen 7 52 0
pudo » OffenesParlament Abstimmungen 47 47 173
pudo » OffenesParlament Personen 1051 8478 2850
pudo » OffenesParlament Zustände 5 32 21
bencomp » Open Library book formats 52 106 162
marians » OpenOrgData city names Rheinland-Pfalz 2340 402 4832
jsfenfen » partial_icpsrs 979 1 0
dgburton » Products 217 191 0
pudo » Programmpunkte 16 491 0
gabelula » Rubros 0 0 0
Selva163 » sample 1 10 3
shweta05 » school 0 0 0
hernamesbarbara » Schools 0 0 0
Sesha07 » Sesha 1 0 0
shweta05 » shweta 1 0 0
dlacross » Some Data 0 0 0
dlacross » something 0 0 0
milafrerichs » Straßen Münster 1430 0 0
turicas » test 4955 13 4955
JimboFrenchman » Test 1 0 0
pudo » UK25k Column Name Mappings 43 6569 833
pudo » UK25k Department Families 32 593 337
pudo » UK25k Entities 1224 2073 109
andylolz » UK Parliamentary Constituencies 3 1 1
davidread » UK Public Bodies 5416 408 0