NCCR Metadata Files

Data Sources · Vocabulary Reference · Usage & Examples

This repository publishes the NCCR Data Platform’s metadata as linked data (RDF/Turtle), enabling FAIR-compliant discovery and integration.

DATMM Dataset Catalog

Per NLM requirements, the NCCR Data Platform is described as a Repository containing 9 standalone Dataset records. Each dataset is a self-contained DATMM record suitable for ingestion into the NLM Dataset Catalog.

File Description
datmm/repository.ttl NCCR Data Platform as a DATMM Repository
datmm/agents.ttl Shared agents (NCI, CCDI, SEER, COG, DCCPS) and contributions
datmm/concepts.ttl Subject concepts with identifiers and scheme membership
datmm/ctc.ttl Consolidated Tumor Case dataset
datmm/abm.ttl Area-Based Measures dataset
datmm/ccdi.ttl CCDI Mappings dataset
datmm/cog.ttl Children’s Oncology Group dataset
datmm/mcd.ttl Medical Claims Diagnosis dataset
datmm/mce.ttl Medical Claims Enrollment dataset
datmm/mcp.ttl Medical Claims Procedure dataset
datmm/pharm.ttl Pharmacy Claims dataset
datmm/ro.ttl Radiation Oncology dataset

NCCR Vocabulary & Instance Data

File Format Description Triples
nccr_vocab.ttl OWL / Turtle Vocabulary — classes and properties for variables, value sets, filters, processing rules, cohort definitions, and display configuration ~150
nccr_instances.ttl RDF / Turtle Instance data — all 533 variables, 3,715 coded values with observed frequencies, 51 cohort filters, and processing rules 42,067

Architecture

datmm/                         ← DATMM catalog layer (NLM Dataset Catalog)
├── repository.ttl                 Repository (NCCR Data Platform)
├── agents.ttl                     Organizations & contributions
├── concepts.ttl                   Subject concepts
├── ctc.ttl                        Consolidated Tumor Case dataset
├── abm.ttl                        Area-Based Measures dataset
├── ccdi.ttl                       CCDI Mappings dataset
├── cog.ttl                        Children's Oncology Group dataset
├── mcd.ttl                        Medical Claims Diagnosis dataset
├── mce.ttl                        Medical Claims Enrollment dataset
├── mcp.ttl                        Medical Claims Procedure dataset
├── pharm.ttl                      Pharmacy Claims dataset
└── ro.ttl                         Radiation Oncology dataset

nccr_vocab.ttl                 ← Schema layer (defines classes & properties)

nccr_instances.ttl             ← Content layer (all variables, values, frequencies)

Three layers of metadata

Dataset discovery (DATMM)
Repository identity, dataset descriptions, contributors, funding, access rights, subject concepts — mapped to the NLM Dataset Catalog
Scientific metadata (NCCR Vocabulary)
Variable definitions, value sets, links to external vocabularies (NAACCR, SEER, ICD-O-3, RxNorm, CanMED, AJCC)
Platform behavior (NCCR Vocabulary)
UI visibility, graph generation, cohort filter bindings, ETL processing rules, observed value frequencies

Standards used