Table 1
Museums included in the assessment and the number of their records in Wikidata (Retrieved data: Oct 6, 2025).
| WIKIDATA ID | MUSEUMS | TOTAL RECORDS IN WIKIDATA |
|---|---|---|
| Q214867 | National Gallery of Art | 128062 |
| Q160236 | Metropolitan Museum of Art | 71813 |
| Q19675 | Louvre Museum | 35946 |
| Q2087788 | National Gallery of Armenia | 24057 |
| Q153306 | National Museum in Warsaw | 22044 |
| Q1568434 | Yale University Art Gallery | 19659 |
| Q812285 | Bavarian State Painting Collections | 18018 |
| Q19877 | Museo Egizio In Turin (IT) | 10012 |
| Q2983474 | Finnish National Gallery | 9200 |
| Q1471477 | Royal Museum of Fine Arts Antwerp | 7984 |

Figure 1
SPARQL Query for retrieving Art museums with at least 5,000 records in Wikidata (https://w.wiki/FZGn).

Figure 2
The SPARQL query for retrieving the last edit date of the assessed Art museums (https://w.wiki/FTnc) (Query: 2025-10-25).
Table 2
Total number of resources in the original repository. Note that the total record value was manually retrieved from the museum’s websites.
| MUSEUMS | TOTAL RECORDS |
|---|---|
| National Gallery of Art | 160000 |
| Metropolitan Museum of Art | 490000 |
| Louvre Museum | 500000 |
| National Gallery of Armenia | 25000 |
| National Museum in Warsaw | 830000 |
| Yale University Art Gallery | 191886 |
| Bavarian State Painting Collections | 30000 |
| Museo Egizio In Turin (IT) | 40000 |
| Finnish National Gallery | 42000 |
| Royal Museum of Fine Arts Antwerp | 10000 |

Figure 3
The SPARQL query for retrieving the Wikimedia Commons links of the assessed Art museums (https://w.wiki/FTnp). Note that the VALUES instruction is employed to provide the Wikidata identifiers of the Art museums selected for this work.
Table 3
Assessment of open data compliance of Art museums in Wikidata based on the defined criteria.
| MUSEUMS | CRITERIA | ||||||
|---|---|---|---|---|---|---|---|
| DUND | DAVA | DFED | DREUSE | DTIME | DENRICH | DFILE | |
| National Gallery of Art | 1 | 1 | 0 | 1 | 1 | 0.80 | 1 |
| Metropolitan Museum of Art | 0 | 1 | 0 | 1 | 1 | 0.14 | 1 |
| Louvre Museum | 0 | 0 | 0 | 0 | 1 | 0.07 | 1 |
| National Gallery of Armenia | 0 | 0 | 0 | 0 | 0.75 | 0.96 | 1 |
| National Museum in Warsaw | 0 | 0 | 0 | 0 | 0.75 | 0.02 | 1 |
| Yale University Art Gallery | 0 | 1 | 0 | 0 | 0.75 | 0.10 | 1 |
| Bavarian State Painting Collections | 0 | 0 | 0 | 0 | 0.75 | 0.60 | 1 |
| Museo Egizio In Turin (IT) | 0 | 0 | 0 | 0 | 1 | 0.25 | 1 |
| Finnish National Gallery | 0 | 1 | 0 | 0 | 1 | 0.21 | 1 |
| Royal Museum of Fine Arts Antwerp | 0 | 0 | 0 | 0 | 1 | 0.79 | 1 |

Figure 4
Metadata footprint of licences across institutional collections. This chart illustrates the varying proportions of artworks with documented licence or copyright status within each museum’s Wikidata records.
