cow

Cow

Name: Cow
Creator: Cow

Metadata onlyLicense under review

Metadata only. This source’s license does not permit redistribution, so we catalog its metadata but do not re-serve the data. Use the provider link to obtain it under the original terms.

Coverage

Series catalogued

19,979

Temporal coverage

1816-12-31 – 2024-12-31

Licensing & provenance

License: License under review
Redistribution: Not permitted (metadata only)
Commercial use: Restricted / no
Modification: Permitted

How to cite

Correlates of War (COW) Project. Retrieved from https://correlatesofwar.org. Compiled and redistributed by the Elkassabgi Data Library.

Processing: Retrieved from the official source, normalized to a long {series_key, obs_date, value} schema (period-start dates), de-duplicated, and stored as zstd Parquet. Compiled and redistributed by the Elkassabgi Data Library.

Access & mirrors

Download: Select & download cow series as CSV →
API: Get a free API key, then GET /v1/series/<id>.csv
Canonical landing: https://econdatalibrary.com/cow.html
Update cadence: annual
Update strategy: bulk snapshot if changed
Storage layout: overwrite-multiple-files: one parquet per dataset — nmc.parquet, trade.parquet, wrp.parquet, alliances.parquet, mids.parquet, states.parquet, igo.parquet — plus _cow_log.txt. Schema series_key(str like COW:NMC:cinc:2), obs_date(date32 Dec-31 annual), value(float64).

Full description

Correlates of War (COW) ingest — downloads key datasets and converts to long-format parquet. Datasets covered: NMCv7 National Material Capabilities (country-year numeric indicators) COW_Trade_4.0 Bilateral Trade (dyad-year; stored as-is, also agg to country-year) WRP_national World Religion Project national (country-year religion shares) formal-alliances Alliance treaty obligations (country-year membership count) MID-5 Militarized Interstate Disputes (country-year dispute indicators) Territorial Territorial Changes (country-year) Source: https://correlatesofwar.org (free, academic) SSL: verify=False (COW has an expired/mis-issued cert) Output: data/clean_full/cow/{dataset}.parquet (series_key, obs_date, value) Run: python jobs/ingest_cow.py

Structured metadata

schema.org/Dataset (Google Dataset Search)

{
  "@context": "https://schema.org/",
  "@type": "Dataset",
  "name": "Cow",
  "description": "Correlates of War (COW) ingest — downloads key datasets and converts to long-format parquet. Datasets covered: NMCv7 National Material Capabilities (country-year numeric indicators) COW_Trade_4.0 Bilateral Trade (dyad-year; stored as-is, also agg to country-year) WRP_national World Religion Project…",
  "url": "https://econdatalibrary.com/cow.html",
  "identifier": "cow",
  "isAccessibleForFree": false,
  "publisher": {
    "@type": "Organization",
    "name": "Econ Data Library",
    "url": "https://econdatalibrary.com"
  },
  "creator": {
    "@type": "Organization",
    "name": "Cow"
  },
  "keywords": [
    "cow"
  ],
  "temporalCoverage": "1816-12-31/2024-12-31",
  "citation": "Correlates of War (COW) Project. Retrieved from https://correlatesofwar.org. Compiled and redistributed by the Elkassabgi Data Library.",
  "sameAs": [
    "https://huggingface.co/datasets/econdatalibrary-cow",
    "https://zenodo.org/communities/econdatalibrary"
  ],
  "usageInfo": "Metadata-only catalog entry. This source's license does not permit redistribution, so the data itself is not served here; use the provider link to obtain the data under its terms."
}

Croissant (ML-ready, schema.org JSON-LD)

{
  "@context": {
    "@language": "en",
    "@vocab": "https://schema.org/",
    "cr": "http://mlcommons.org/croissant/",
    "data": {
      "@id": "cr:data",
      "@type": "@json"
    },
    "dataType": {
      "@id": "cr:dataType",
      "@type": "@vocab"
    },
    "sc": "https://schema.org/",
    "conformsTo": "dct:conformsTo",
    "dct": "http://purl.org/dc/terms/"
  },
  "@type": "sc:Dataset",
  "conformsTo": "http://mlcommons.org/croissant/1.0",
  "name": "cow",
  "description": "Correlates of War (COW) ingest — downloads key datasets and converts to long-format parquet. Datasets covered: NMCv7 National Material Capabilities (country-year numeric indicators) COW_Trade_4.0 Bilateral Trade (dyad-year; stored as-is, also agg to country-year) WRP_national World Religion Project…",
  "url": "https://econdatalibrary.com/cow.html",
  "creator": {
    "@type": "sc:Organization",
    "name": "Cow"
  },
  "publisher": {
    "@type": "sc:Organization",
    "name": "Econ Data Library",
    "url": "https://econdatalibrary.com"
  },
  "temporalCoverage": "1816-12-31/2024-12-31",
  "citation": "Correlates of War (COW) Project. Retrieved from https://correlatesofwar.org. Compiled and redistributed by the Elkassabgi Data Library.",
  "isAccessibleForFree": false,
  "usageInfo": "Metadata-only Croissant record; underlying data is not redistributed under this source's license."
}

Part of the Econ Data Library catalog · metadata generated 2026-07-14 from the central registry · browse all datasets