What is Wikidata?

Figure 1

Screenshot of the Wikidata main page displaying in a web browser
Screenshot of Wikidata Main Page

Figure 2

Labeled display of a Wikidata item showing how elements like identifier, description, and staements may be displayed

Underlying concepts of Wikidata

Figure 1

Schematic of a data table in a relational database, which can be understood as a series of records (ordered tuple values) with various attributes, which can be related to other tables in the database through structured queries.

Figure 2

A data structure diagram illustrating a possible connection between a list of triples, represented by a data dictionary, and a graph diagram which visualizes the relationships stipulated by the triples.

Figure 3

Schematic illustration of an RDF Triple

Figure 4

Go to Wikidata and either search for “Mae Jemison” or enter the ID Q34091. In the picture below the statement “Mae C. Jemison - part of - NASA Astronaut Group 12” is an RDF triple. Wikidata_Main_Page
Screenshot of Wikidata Main Page

Introduction to editing

Figure 1

Front Page of the test instance

Figure 2

Empty create form of the test instance

Figure 3

Empty create form of the test instance

Figure 4

Freshly created Item of Mae Jemison

Figure 5

Wikidata Jemison

Advanced editing

Figure 1

Go to pubmed, scroll down to “latest literature” and select an article: latest_articles

Figure 2

choose_doi

Figure 3

paste_into_sourcemd

Figure 4

open quickstatements

Figure 5

run_editing

Introduction to querying

Figure 1

Example for the knowledge graph spanned by one Wikidata item % source: http://tinyurl.com/y267yz5q

Figure 2

Example for the knowledge graph spanned by one Wikidata item and more details about Feynman % click on that node in the above query

Figure 3

Wikidata Query Service results window

Figure 4

Extract from the SPARQL editor

Figure 5

Example of displaying cats in grid format

Figure 6

Extract from the SPARQL editor

Figure 7

Extract from the SPARQL editor

Figure 8

Extract from the SPARQL editor

Figure 9

Extract from the SPARQL editor

Figure 10

Bubblechart of books weight by genre

Figure 11

Map of NFDI Consortia in Germany

Figure 12

Close up look

Figure 13

Number of participants in NFDI consortia visualized as bar chart

Figure 14

relationships between NFDI Consortia in Berlin, Germany

Advanced bulk updating, bots