croissant file added

croissant.json

@@ -0,0 +1,207 @@
+{
+  "@context": "https://w3id.org/croissant/v1",
+  "@type": "Dataset",
+
+  "name": "NDL Core Corpus",
+  "version": "v0.1",
+
+  "description": "The NDL Core Corpus is an experimental, AI-ready aggregation of UK public sector data, developed as a minimum viable prototype (MVP) for the proposed National Data Library (NDL). The dataset is intended to support AI experimentation using UK public sector data, knowledge-base construction for AI agents, retrieval-augmented generation (RAG) pipelines, policy research and evaluation, and prototyping data infrastructure aligned with the Open Data Institute’s Data and AI programme.",
+
+  "creator": {
+    "@type": "Organization",
+    "name": "The Open Data Institute"
+  },
+
+  "publisher": {
+    "@type": "Organization",
+    "name": "The Open Data Institute"
+  },
+
+  "license": {
+    "@type": "CreativeWork",
+    "name": "Open Government Licence v3.0",
+    "url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/"
+  },
+
+  "conditionsOfAccess": "Open access. Individual records reference their original public-sector licences in a dedicated license field.",
+
+  "inLanguage": ["en", "cy"],
+
+  "keywords": [
+    "national data library",
+    "public sector data",
+    "ai-ready data",
+    "retrieval augmented generation",
+    "knowledge base",
+    "agentic ai",
+    "uk government data",
+    "open data"
+  ],
+
+  "spatialCoverage": {
+    "@type": "Place",
+    "name": "United Kingdom"
+  },
+
+  "temporalCoverage": "2025-01-01/2025-12-31",
+
+  "distribution": [
+    {
+      "@type": "FileObject",
+      "name": "ndl_core_aggregate.parquet",
+      "description": "Full aggregated corpus combining text and structured data from multiple UK public sector sources, standardised and enriched for AI use.",
+      "contentUrl": "ndl_core_aggregate.parquet",
+      "encodingFormat": "application/parquet"
+    }
+  ],
+
+  "conformsTo": [
+    "https://www.iso.org/iso-8601-date-and-time-format.html",
+    "https://w3id.org/croissant"
+  ],
+
+  "measurementTechnique": [
+    "Web crawling",
+    "API ingestion",
+    "Text extraction",
+    "Data standardisation",
+    "Deduplication",
+    "Language identification",
+    "Semantic classification using EU Data Theme Vocabulary"
+  ],
+
+  "isBasedOn": [
+    {
+      "@type": "CreativeWork",
+      "name": "GOV.UK",
+      "url": "https://www.gov.uk"
+    },
+    {
+      "@type": "CreativeWork",
+      "name": "Hansard",
+      "url": "https://hansard.parliament.uk"
+    },
+    {
+      "@type": "CreativeWork",
+      "name": "legislation.gov.uk",
+      "url": "https://www.legislation.gov.uk"
+    },
+    {
+      "@type": "CreativeWork",
+      "name": "data.gov.uk",
+      "url": "https://www.data.gov.uk"
+    },
+    {
+      "@type": "CreativeWork",
+      "name": "Office for National Statistics",
+      "url": "https://www.ons.gov.uk"
+    },
+    {
+      "@type": "CreativeWork",
+      "name": "Department for Environment, Food & Rural Affairs",
+      "url": "https://environment.data.gov.uk"
+    }
+  ],
+
+  "variableMeasured": [
+    {
+      "@type": "PropertyValue",
+      "name": "identifier",
+      "description": "Unique text identifier (UUID) for each record."
+    },
+    {
+      "@type": "PropertyValue",
+      "name": "title",
+      "description": "Title of the resource or source filename."
+    },
+    {
+      "@type": "PropertyValue",
+      "name": "description",
+      "description": "Description or summary of the resource."
+    },
+    {
+      "@type": "PropertyValue",
+      "name": "source",
+      "description": "Originating source from which the data was crawled or ingested."
+    },
+    {
+      "@type": "PropertyValue",
+      "name": "date",
+      "description": "Date of creation or publication of the resource."
+    },
+    {
+      "@type": "PropertyValue",
+      "name": "collection_time",
+      "description": "Timestamp indicating when the data was crawled or ingested."
+    },
+    {
+      "@type": "PropertyValue",
+      "name": "open_type",
+      "description": "Collection grouping such as Open Government or Open Source."
+    },
+    {
+      "@type": "PropertyValue",
+      "name": "license",
+      "description": "Licence governing reuse of the individual record."
+    },
+    {
+      "@type": "PropertyValue",
+      "name": "tags",
+      "description": "Automatically assigned tags using the EU Data Theme Vocabulary."
+    },
+    {
+      "@type": "PropertyValue",
+      "name": "language",
+      "description": "Automatically identified language of the content."
+    },
+    {
+      "@type": "PropertyValue",
+      "name": "format",
+      "description": "Data format of the record (e.g. text, parquet)."
+    },
+    {
+      "@type": "PropertyValue",
+      "name": "text",
+      "description": "Full textual content of the resource, where applicable."
+    },
+    {
+      "@type": "PropertyValue",
+      "name": "word_count",
+      "description": "Number of space-delimited words in the text."
+    },
+    {
+      "@type": "PropertyValue",
+      "name": "token_count",
+      "description": "Number of tokens computed for machine learning use."
+    },
+    {
+      "@type": "PropertyValue",
+      "name": "data_file",
+      "description": "Relative path to an associated structured data file, if present."
+    },
+    {
+      "@type": "PropertyValue",
+      "name": "extra_metadata",
+      "description": "Sparse, source-specific metadata fields preserved from original datasets."
+    }
+  ],
+
+  "intendedUse": [
+    "Machine learning training",
+    "Fine-tuning language models",
+    "Retrieval-augmented generation",
+    "Knowledge-base construction",
+    "Policy research and evaluation",
+    "AI agent experimentation"
+  ],
+
+  "limitations": "This dataset represents a static snapshot of public sector data collected during 2025. It is not real-time and coverage varies by source. Semantic harmonisation is necessarily partial due to source diversity.",
+
+  "updateFrequency": "Static snapshot",
+
+  "identifier": {
+    "@type": "PropertyValue",
+    "propertyID": "UUID",
+    "description": "Each record is identified using a universally unique identifier."
+  }
+}