DOI: 10.5281/zenodo.17471988
title: CWTS Leiden Ranking Open Edition 2025 - Data

description: This data set contains the data used to create the CWTS Leiden Ranking Open Edition 2025. The data set includes (1) data about the universities included in the Leiden Ranking Open Edition 2025 and the links between these universities and their affiliated organizations, (2) data about the publications included in the Leiden Ranking Open Edition 2025 and the links between these publications and universities and main fields, (3) indicators at the level of publications, and (4) indicators at the level of universities and main fields.

The Leiden Ranking Open Edition 2025 is based on the OpenAlex snapshot from August, 2025. The snapshot data is not included in this data set.

The source code for creating this data set is available in this GitHub repository.

See this blog post for more information about the Leiden Ranking Open Edition 2025.

 

This data set consists of the following tab-delimited files.

 

university



university_id

university

university_full_name

university_ror_id

university_ror_name

university_openalex_institution_id

country_code

latitude

longitude

is_mtor_university


 

affiliated_organization



affiliated_organization_ror_id

affiliated_organization_ror_name

affiliated_organization_openalex_institution_id


 

university_affiliated_organization



university_ror_id

university_openalex_institution_id

relation_type

affiliated_organization_ror_id

affiliated_organization_openalex_institution_id

affiliated_organization_weight


 

main_field



main_field_id

main_field


 

pub



work_id

doi

pub_year

is_core_pub

micro_cluster_id


 

pub_university



work_id

university_id

weight


 

pub_main_field



work_id

main_field_id

weight


 

period



period_begin_year

period_end_year

period


 

pub_impact_indicators



work_id

period_begin_year

core_pubs_only

cs

p_10_cits

p_20_cits

p_50_cits

p_100_cits

ncs

p_top_1

p_top_5

p_top_10

p_top_50


 

pub_collab_indicators



work_id

p_collab

p_int_collab

p_industry

p_short_dist_collab

p_long_dist_collab


 

pub_oa_indicators



work_id

p_oa_unknown

p_oa

p_gold_oa

p_hybrid_oa

p_bonze_oa

p_green_oa


 

university_impact_indicators



university_id

main_field_id

period_begin_year

core_pubs_only

fractional_counting

p

tcs

p_10_cits

p_20_cits

p_50_cits

p_100_cits

tncs

p_top_1

p_top_5

p_top_10

p_top_50

mcs

mcs_lb

mcs_ub

pp_10_cits

pp_10_cits_lb

pp_10_cits_ub

pp_20_cits

pp_20_cits_lb

pp_20_cits_ub

pp_50_cits

pp_50_cits_lb

pp_50_cits_ub

pp_100_cits

pp_100_cits_lb

pp_100_cits_ub

mncs

mncs_lb

mncs_ub

pp_top_1

pp_top_1_lb

pp_top_1_ub

pp_top_5

pp_top_5_lb

pp_top_5_ub

pp_top_10

pp_top_10_lb

pp_top_10_ub

pp_top_50

pp_top_50_lb

pp_top_50_ub


 

university_collab_indicators



university_id

main_field_id

period_begin_year

core_pubs_only

p

p_collab

p_int_collab

p_industry_collab

p_short_dist_collab

p_long_dist_collab

pp_collab

pp_collab_lb

pp_collab_ub

pp_int_collab

pp_int_collab_lb

pp_int_collab_ub

pp_industry_collab

pp_industry_collab_lb

pp_industry_collab_ub

pp_short_dist_collab

pp_short_dist_collab_lb

pp_short_dist_collab_ub

pp_long_dist_collab

pp_long_dist_collab_lb

pp_long_dist_collab_ub


 

university_oa_indicators



university_id

main_field_id

period_begin_year

core_pubs_only

p

p_oa_unknown

p_oa

p_gold_oa

p_hybrid_oa

p_bronze_oa

p_green_oa

pp_oa_unknown

pp_oa_unknown_lb

pp_oa_unknown_ub

pp_oa

pp_oa_lb

pp_oa_ub

pp_gold_oa

pp_gold_oa_lb

pp_gold_oa_ub

pp_hybrid_oa

pp_hybrid_oa_lb

pp_hybrid_oa_ub

pp_bronze_oa

pp_bronze_oa_lb

pp_bronze_oa_ub

pp_green_oa

pp_green_oa_lb

pp_green_oa_ub